Windows Analysis Report
rFACTURA_FAC_2023_1-1000733.PDF.exe

Overview

General Information

Sample Name: rFACTURA_FAC_2023_1-1000733.PDF.exe
Analysis ID: 830399
MD5: a6ef5ed777ba7369c2bb28e46b198ba6
SHA1: f707bc0343f41d95f57e776a9f85f6a2c5791aa7
SHA256: 878d710875b07ec61bef0b198ba67bf81ad0730a3a483d5762cd18e13fb4b525
Infos:

Detection

GuLoader
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Multi AV Scanner detection for submitted file
Yara detected GuLoader
Snort IDS alert for network traffic
Tries to steal Mail credentials (via file / registry access)
Initial sample is a PE file and has a suspicious name
Writes to foreign memory regions
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
May check the online IP address of the machine
Uses an obfuscated file name to hide its real file extension (double extension)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
One or more processes crash
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
IP address seen in connection with other malware
Enables debug privileges
AV process strings found (often used to terminate AV products)
Found inlined nop instructions (likely shell or obfuscated code)
PE file does not import any functions
Drops PE files
Tries to load missing DLLs
Uses a known web browser user agent for HTTP communication
Binary contains a suspicious time stamp
PE / OLE file has an invalid certificate
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality for read data from the clipboard

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Virustotal: Detection: 20% Perma Link
Uses 32bit PE files
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Registry value created: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Replyingly\Avnbgen\Spisekamrenes Jump to behavior
Source: unknown HTTPS traffic detected: 142.250.181.238:443 -> 192.168.11.20:49799 version: TLS 1.2
Source: unknown HTTPS traffic detected: 142.250.185.193:443 -> 192.168.11.20:49800 version: TLS 1.2
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Binary string: \??\C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Xml.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: @cn.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: System.ni.pdbRSDS source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.pdb| source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: Microsoft.VisualBasic.pdb)Q source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: D:\a\_work\1\s\artifacts\obj\System.Reflection.Primitives\net6.0-Release\System.Reflection.Primitives.pdb source: System.Reflection.Primitives.dll.0.dr
Source: Binary string: D:\a\_work\1\s\artifacts\obj\System.Reflection.Primitives\net6.0-Release\System.Reflection.Primitives.pdb8+N+ @+_CorDllMainmscoree.dll source: System.Reflection.Primitives.dll.0.dr
Source: Binary string: System.Reflection.TypeExtensions.ni.pdb source: System.Reflection.TypeExtensions.dll.0.dr
Source: Binary string: C:\Windows\caspol.pdbpdbpol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Configuration.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\exe\caspol.pdby33o source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: \??\C:\Windows\symbols\exe\caspol.pdb source: CasPol.exe, 0000000B.00000002.1859898012.0000000003AEF000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Configuration.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\symbols\exe\caspol.pdbd source: CasPol.exe, 0000000B.00000002.1859898012.0000000003AEF000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Xml.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.Xml.ni.pdbRSDS# source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: ;6##.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: Microsoft.VisualBasic.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.Core.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.Windows.Forms.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.ni.pdbRSDSrMV9 source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.pdbGhY source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Windows.Forms.pdbp source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: bwcaspol.PDB 8: source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Core.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: D:\a\_work\1\s\artifacts\obj\System.Reflection.TypeExtensions\net6.0-Release\System.Reflection.TypeExtensions.pdb source: System.Reflection.TypeExtensions.dll.0.dr
Source: Binary string: System.Configuration.ni.pdbRSDScUN source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: ?cnC:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: \??\C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.PDBFiV source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.pdbSystem.Core.dll source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: 3symbols\exe\caspol.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: 96HPWn,C:\Windows\caspol.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: System.Core.ni.pdbRSDS source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: caspol.pdbcaspol.pdbpdbpol.pdb\v4.0.30319\caspol.pdbp source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: \??\C:\Windows\exe\caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_0040596D GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_0040596D
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_004065A2 FindFirstFileW,FindClose, 0_2_004065A2
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00402862 FindFirstFileW, 0_2_00402862
Found inlined nop instructions (likely shell or obfuscated code)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 4x nop then jmp 341978CCh 11_2_34196DDF
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 4x nop then mov dword ptr [ebp-14h], 00000000h 11_2_34196933
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 4x nop then mov dword ptr [ebp-14h], 00000000h 11_2_34196B14
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 4x nop then mov dword ptr [ebp-14h], 00000000h 11_2_34196300

Networking
barindex
Snort IDS alert for network traffic
Source: Traffic Snort IDS: 2039190 ET TROJAN 404/Snake/Matiex Keylogger Style External IP Check 192.168.11.20:49801 -> 132.226.8.169:80
May check the online IP address of the machine
Source: unknown DNS query: name: checkip.dyndns.org
Source: unknown DNS query: name: checkip.dyndns.org
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: UTMEMUS UTMEMUS
JA3 SSL client fingerprint seen in connection with other malware
Source: Joe Sandbox View JA3 fingerprint: 37f463bf4616ecd445d4a1937da06e19
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 132.226.8.169 132.226.8.169
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /uc?export=download&id=1XARcr4sm_5_dvnsnsVtsDOfjHfua_08k HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoHost: drive.google.comCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/mjejjps3gi1cd44ihbckcd43d7dn78od/1679306700000/12467729248612761337/*/1XARcr4sm_5_dvnsnsVtsDOfjHfua_08k?e=download&uuid=dc7be3b5-c5f0-4bcb-ad3e-a7d72194b047 HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoCache-Control: no-cacheHost: doc-0s-a8-docs.googleusercontent.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET / HTTP/1.1User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR1.0.3705;)Host: checkip.dyndns.orgConnection: Keep-Alive
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 49799
Source: unknown Network traffic detected: HTTP traffic on port 49800 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 49799 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 49800
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: CasPol.exe, 0000000B.00000002.1876903989.00000000342A5000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://checkip.dyndns.com
Source: CasPol.exe, 0000000B.00000002.1876903989.0000000034291000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1876903989.00000000342A5000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://checkip.dyndns.org
Source: CasPol.exe, 0000000B.00000002.1876903989.00000000341E1000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://checkip.dyndns.org/
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/licenses/by-sa/4.0/
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#Attribution
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#DerivativeWorks
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#Distribution
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#Notice
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#Reproduction
Source: battery-level-90-charging-symbolic.svg.0.dr String found in binary or memory: http://creativecommons.org/ns#ShareAlike
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://crl.certum.pl/ctnca.crl0k
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://crl.certum.pl/ctnca2.crl0l
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://crl.certum.pl/ctsca2021.crl0o
Source: CasPol.exe, 0000000B.00000003.1385137269.0000000003A94000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://crl.comodoca.com/AAACertificateServices.crl06
Source: CasPol.exe, 0000000B.00000003.1385137269.0000000003A94000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000003.1389269538.0000000003AAA000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1859898012.0000000003AA9000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://crl.globalsign.net/root-r2.crl0
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://repository.certum.pl/ctnca.cer09
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://repository.certum.pl/ctnca2.cer09
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://repository.certum.pl/ctsca2021.cer0
Source: CasPol.exe, 0000000B.00000002.1876903989.00000000341E1000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://subca.ocsp-certum.com01
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://subca.ocsp-certum.com02
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://subca.ocsp-certum.com05
Source: Amcache.hve.LOG1.15.dr, Amcache.hve.15.dr String found in binary or memory: http://upx.sf.net
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe String found in binary or memory: http://www.certum.pl/CPS0
Source: CasPol.exe, 0000000B.00000003.1385137269.0000000003AC6000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000003.1385837889.0000000003AD9000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://csp.withgoogle.com/csp/report-to/DriveUntrustedContentHttp/external
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A59000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000003.1389269538.0000000003AC0000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://doc-0s-a8-docs.googleusercontent.com/
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A59000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://doc-0s-a8-docs.googleusercontent.com/#
Source: CasPol.exe, 0000000B.00000003.1385137269.0000000003AC6000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1859898012.0000000003A90000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000003.1389269538.0000000003A90000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000003.1385837889.0000000003AD9000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1859898012.0000000003A78000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://doc-0s-a8-docs.googleusercontent.com/docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/mjejjps3
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A1B000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://drive.google.com/2
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A1B000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://drive.google.com/j
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A59000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1859898012.0000000003A1B000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://drive.google.com/uc?export=download&id=1XARcr4sm_5_dvnsnsVtsDOfjHfua_08k
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A1B000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://drive.google.com/uc?export=download&id=1XARcr4sm_5_dvnsnsVtsDOfjHfua_08kQ
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A59000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: https://drive.google.com/uc?export=download&id=1XARcr4sm_5_dvnsnsVtsDOfjHfua_08ktsv
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1411917018.0000000000789000.00000004.00000001.01000000.00000003.sdmp, System.Reflection.Primitives.dll.0.dr, System.Reflection.TypeExtensions.dll.0.dr String found in binary or memory: https://github.com/dotnet/runtime
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1411917018.0000000000789000.00000004.00000001.01000000.00000003.sdmp, System.Reflection.TypeExtensions.dll.0.dr String found in binary or memory: https://github.com/dotnet/runtimeBSJB
Source: unknown DNS traffic detected: queries for: drive.google.com
Source: global traffic HTTP traffic detected: GET /uc?export=download&id=1XARcr4sm_5_dvnsnsVtsDOfjHfua_08k HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoHost: drive.google.comCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/mjejjps3gi1cd44ihbckcd43d7dn78od/1679306700000/12467729248612761337/*/1XARcr4sm_5_dvnsnsVtsDOfjHfua_08k?e=download&uuid=dc7be3b5-c5f0-4bcb-ad3e-a7d72194b047 HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like GeckoCache-Control: no-cacheHost: doc-0s-a8-docs.googleusercontent.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET / HTTP/1.1User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR1.0.3705;)Host: checkip.dyndns.orgConnection: Keep-Alive
Source: unknown HTTPS traffic detected: 142.250.181.238:443 -> 192.168.11.20:49799 version: TLS 1.2
Source: unknown HTTPS traffic detected: 142.250.185.193:443 -> 192.168.11.20:49800 version: TLS 1.2
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00405402 GetDlgItem,GetDlgItem,GetDlgItem,GetDlgItem,LdrInitializeThunk,GetClientRect,GetSystemMetrics,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,ShowWindow,ShowWindow,GetDlgItem,SendMessageW,SendMessageW,SendMessageW,GetDlgItem,CreateThread,CloseHandle,ShowWindow,ShowWindow,ShowWindow,ShowWindow,LdrInitializeThunk,SendMessageW,CreatePopupMenu,LdrInitializeThunk,AppendMenuW,GetWindowRect,TrackPopupMenu,SendMessageW,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,SendMessageW,GlobalUnlock,SetClipboardData,CloseClipboard, 0_2_00405402

System Summary
barindex
Initial sample is a PE file and has a suspicious name
Source: initial sample Static PE information: Filename: rFACTURA_FAC_2023_1-1000733.PDF.exe
Uses 32bit PE files
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
One or more processes crash
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process created: C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WerFault.exe -u -p 6576 -s 2500
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00403350 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,GetModuleHandleW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,OleUninitialize,ExitProcess,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,LdrInitializeThunk,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,LdrInitializeThunk,ExitWindowsEx,ExitProcess, 0_2_00403350
Detected potential crypto function
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00404C3F 0_2_00404C3F
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_341934F2 11_2_341934F2
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_34196DDF 11_2_34196DDF
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_34194858 11_2_34194858
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_341920D8 11_2_341920D8
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_341962EF 11_2_341962EF
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_34196300 11_2_34196300
PE file does not import any functions
Source: System.Reflection.TypeExtensions.dll.0.dr Static PE information: No import functions for PE file found
Tries to load missing DLLs
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Section loaded: edgegdi.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Section loaded: edgegdi.dll Jump to behavior
PE / OLE file has an invalid certificate
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Static PE information: invalid certificate
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Virustotal: Detection: 20%
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File read: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Jump to behavior
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: unknown Process created: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process created: C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WerFault.exe -u -p 6576 -s 2500
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f486a52-3cb1-48fd-8f50-b8dc300d9f9d}\InProcServer32 Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00403350 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,GetModuleHandleW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,OleUninitialize,ExitProcess,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,LdrInitializeThunk,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,LdrInitializeThunk,ExitWindowsEx,ExitProcess, 0_2_00403350
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File created: C:\Users\user\AppData\Local\Temp\nsz1C6D.tmp Jump to behavior
Source: classification engine Classification label: mal100.troj.spyw.evad.winEXE@5/21@3/3
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_004020FE LdrInitializeThunk,CoCreateInstance,LdrInitializeThunk, 0_2_004020FE
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_004046C3 GetDlgItem,SetWindowTextW,LdrInitializeThunk,LdrInitializeThunk,SHBrowseForFolderW,CoTaskMemFree,lstrcmpiW,lstrcatW,SetDlgItemTextW,LdrInitializeThunk,GetDiskFreeSpaceW,MulDiv,SetDlgItemTextW, 0_2_004046C3
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\e4a1c9189d2b01f018b953e46c80d120\mscorlib.ni.dll Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\e4a1c9189d2b01f018b953e46c80d120\mscorlib.ni.dll Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\e4a1c9189d2b01f018b953e46c80d120\mscorlib.ni.dll Jump to behavior
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:3964:304:WilStaging_02
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:3964:120:WilError_03
Source: C:\Windows\SysWOW64\WerFault.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6576
Source: Window Recorder Window detected: More than 3 window changes detected
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe File opened: C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorrc.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Key opened: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Registry value created: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Replyingly\Avnbgen\Spisekamrenes Jump to behavior
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Binary string: \??\C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Xml.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: @cn.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: System.ni.pdbRSDS source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.pdb| source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: Microsoft.VisualBasic.pdb)Q source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: D:\a\_work\1\s\artifacts\obj\System.Reflection.Primitives\net6.0-Release\System.Reflection.Primitives.pdb source: System.Reflection.Primitives.dll.0.dr
Source: Binary string: D:\a\_work\1\s\artifacts\obj\System.Reflection.Primitives\net6.0-Release\System.Reflection.Primitives.pdb8+N+ @+_CorDllMainmscoree.dll source: System.Reflection.Primitives.dll.0.dr
Source: Binary string: System.Reflection.TypeExtensions.ni.pdb source: System.Reflection.TypeExtensions.dll.0.dr
Source: Binary string: C:\Windows\caspol.pdbpdbpol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Configuration.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\exe\caspol.pdby33o source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: \??\C:\Windows\symbols\exe\caspol.pdb source: CasPol.exe, 0000000B.00000002.1859898012.0000000003AEF000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Configuration.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\symbols\exe\caspol.pdbd source: CasPol.exe, 0000000B.00000002.1859898012.0000000003AEF000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Xml.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.Xml.ni.pdbRSDS# source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: ;6##.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: Microsoft.VisualBasic.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.Core.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.Windows.Forms.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.ni.pdbRSDSrMV9 source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.pdbGhY source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Windows.Forms.pdbp source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: mscorlib.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: bwcaspol.PDB 8: source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.Core.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: D:\a\_work\1\s\artifacts\obj\System.Reflection.TypeExtensions\net6.0-Release\System.Reflection.TypeExtensions.pdb source: System.Reflection.TypeExtensions.dll.0.dr
Source: Binary string: System.Configuration.ni.pdbRSDScUN source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: \??\C:\Windows\caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: ?cnC:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: \??\C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.PDBFiV source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp
Source: Binary string: System.ni.pdb source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: System.pdbSystem.Core.dll source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: 3symbols\exe\caspol.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: 96HPWn,C:\Windows\caspol.pdb source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: System.Core.ni.pdbRSDS source: WER2B2E.tmp.dmp.15.dr
Source: Binary string: caspol.pdbcaspol.pdbpdbpol.pdb\v4.0.30319\caspol.pdbp source: CasPol.exe, 0000000B.00000002.1875353906.0000000033F87000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: \??\C:\Windows\exe\caspol.pdb source: CasPol.exe, 0000000B.00000002.1880395156.0000000036380000.00000004.00000020.00020000.00000000.sdmp

Data Obfuscation
barindex
Yara detected GuLoader
Source: Yara match File source: 00000000.00000002.1415606595.0000000005E20000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.1415606595.00000000048B0000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 0000000B.00000002.1786467995.0000000000FC0000.00000040.00000400.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\antiphthisical\Primar\Cunicular\Densimetric\Talestrmmene.Unr, type: DROPPED
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_10002DE0 push eax; ret 0_2_10002E0E
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B4C0D push edi; iretd 0_2_048B4C0E
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B4C15 push edi; iretd 0_2_048B4C16
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B5A6C push cs; ret 0_2_048B5A71
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B2072 push FFFFFF83h; retf 0_2_048B209F
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B7C71 push es; iretd 0_2_048B7C74
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B4BAE push edi; iretd 0_2_048B4BBA
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B4BC1 push edi; iretd 0_2_048B4BC2
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B71FA push esi; ret 0_2_048B71FD
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B7DFA pushfd ; retf 0_2_048B7E05
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B4B26 push eax; retf 0_2_048B4B3D
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_048B0D3A pushad ; ret 0_2_048B0D43
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC7C71 push es; iretd 11_2_00FC7C74
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC2072 push FFFFFF83h; retf 11_2_00FC209F
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC5A6C push cs; ret 11_2_00FC5A71
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC4C15 push edi; iretd 11_2_00FC4C16
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC4C0D push edi; iretd 11_2_00FC4C0E
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC71FA push esi; ret 11_2_00FC71FD
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC7DFA pushfd ; retf 11_2_00FC7E05
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC4BC1 push edi; iretd 11_2_00FC4BC2
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC4BAE push edi; iretd 11_2_00FC4BBA
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC0D3A pushad ; ret 11_2_00FC0D43
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Code function: 11_2_00FC4B26 push eax; retf 11_2_00FC4B3D
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_10001B18 GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,LdrInitializeThunk,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,LdrInitializeThunk,LdrInitializeThunk,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_10001B18
Binary contains a suspicious time stamp
Source: System.Reflection.Primitives.dll.0.dr Static PE information: 0xE40AD0DE [Wed Mar 28 09:54:38 2091 UTC]
Drops PE files
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File created: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\System.Reflection.TypeExtensions.dll Jump to dropped file
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File created: C:\Users\user\AppData\Local\Temp\nsp1D68.tmp\AdvSplash.dll Jump to dropped file
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File created: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\antiphthisical\Primar\Cunicular\Densimetric\System.Reflection.Primitives.dll Jump to dropped file
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File created: C:\Users\user\AppData\Local\Temp\nsp1D68.tmp\System.dll Jump to dropped file

Hooking and other Techniques for Hiding and Protection
barindex
Uses an obfuscated file name to hide its real file extension (double extension)
Source: Possible double extension: pdf.exe Static PE information: rFACTURA_FAC_2023_1-1000733.PDF.exe
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\conhost.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: FAILCRITICALERRORS | NOGPFAULTERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\WerFault.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion
barindex
Tries to detect Any.run
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1414281617.0000000000B58000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: \??\C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXEA
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1414281617.0000000000B58000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE0
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Found dropped PE file which has not been started or loaded
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\System.Reflection.TypeExtensions.dll Jump to dropped file
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\antiphthisical\Primar\Cunicular\Densimetric\System.Reflection.Primitives.dll Jump to dropped file
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_0040596D GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_0040596D
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_004065A2 FindFirstFileW,FindClose, 0_2_004065A2
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00402862 FindFirstFileW, 0_2_00402862
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe System information queried: ModuleInformation Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe API call chain: ExitProcess graph end node
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Guest Shutdown Service
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Remote Desktop Virtualization Service
Source: CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: vmicshutdown
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Volume Shadow Copy Requestor
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V PowerShell Direct Service
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Time Synchronization Service
Source: CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: vmicvss
Source: CasPol.exe, 0000000B.00000002.1859898012.0000000003A1B000.00000004.00000020.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1859898012.0000000003A78000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW
Source: Amcache.hve.15.dr Binary or memory string: Microsoft Hyper-V Virtualization Infrastructure Driver
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1414281617.0000000000B58000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: \??\C:\Program Files\Qemu-ga\qemu-ga.exea
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Data Exchange Service
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1414281617.0000000000B58000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe0
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Heartbeat Service
Source: rFACTURA_FAC_2023_1-1000733.PDF.exe, 00000000.00000002.1463555266.0000000010059000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: Hyper-V Guest Service Interface
Source: CasPol.exe, 0000000B.00000002.1862719819.00000000053F9000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: vmicheartbeat
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_10001B18 GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,LdrInitializeThunk,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,LdrInitializeThunk,LdrInitializeThunk,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_10001B18
Enables debug privileges
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Process token adjusted: Debug Jump to behavior
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00401E43 LdrInitializeThunk,ShowWindow,EnableWindow, 0_2_00401E43
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Memory allocated: page read and write | page guard Jump to behavior

HIPS / PFW / Operating System Protection Evasion
barindex
Writes to foreign memory regions
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Memory written: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe base: FC0000 Jump to behavior
Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Jump to behavior
Queries the volume information (name, serial number etc) of a device
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Queries volume information: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualBasic\v4.0_10.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior
Source: C:\Users\user\Desktop\rFACTURA_FAC_2023_1-1000733.PDF.exe Code function: 0_2_00403350 EntryPoint,SetErrorMode,GetVersion,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,GetModuleHandleW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,OleUninitialize,ExitProcess,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,LdrInitializeThunk,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,LdrInitializeThunk,ExitWindowsEx,ExitProcess, 0_2_00403350
AV process strings found (often used to terminate AV products)
Source: Amcache.hve.15.dr Binary or memory string: msmpeng.exe
Source: Amcache.hve.15.dr Binary or memory string: c:\program files\windows defender\msmpeng.exe
Source: Amcache.hve.15.dr Binary or memory string: c:\programdata\microsoft\windows defender\platform\4.18.2107.4-0\msmpeng.exe
Source: CasPol.exe, 0000000B.00000002.1876903989.00000000341E1000.00000004.00000800.00020000.00000000.sdmp, CasPol.exe, 0000000B.00000002.1876903989.00000000342A5000.00000004.00000800.00020000.00000000.sdmp, Amcache.hve.15.dr Binary or memory string: MsMpEng.exe

Stealing of Sensitive Information
barindex
Tries to steal Mail credentials (via file / registry access)
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe Key opened: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Jump to behavior
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 830399 Sample: rFACTURA_FAC_2023_1-1000733... Startdate: 20/03/2023 Architecture: WINDOWS Score: 100 28 checkip.dyndns.org 2->28 30 checkip.dyndns.com 2->30 32 3 other IPs or domains 2->32 40 Snort IDS alert for network traffic 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 Yara detected GuLoader 2->44 46 4 other signatures 2->46 8 rFACTURA_FAC_2023_1-1000733.PDF.exe 5 40 2->8         started        signatures3 process4 file5 20 C:\Users\user\AppData\...\Talestrmmene.Unr, data 8->20 dropped 22 C:\Users\user\AppData\Local\...\System.dll, PE32 8->22 dropped 24 C:\Users\user\AppData\Local\...\AdvSplash.dll, PE32 8->24 dropped 26 2 other files (none is malicious) 8->26 dropped 48 Writes to foreign memory regions 8->48 50 Tries to detect Any.run 8->50 12 CasPol.exe 15 11 8->12         started        signatures6 process7 dnsIp8 34 checkip.dyndns.com 132.226.8.169, 49801, 80 UTMEMUS United States 12->34 36 drive.google.com 142.250.181.238, 443, 49799 GOOGLEUS United States 12->36 38 googlehosted.l.googleusercontent.com 142.250.185.193, 443, 49800 GOOGLEUS United States 12->38 52 Tries to steal Mail credentials (via file / registry access) 12->52 54 Tries to detect Any.run 12->54 16 WerFault.exe 22 16 12->16         started        18 conhost.exe 12->18         started        signatures9 process10
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
132.226.8.169
 checkip.dyndns.com United States
16989 UTMEMUS true
142.250.181.238
 drive.google.com United States
15169 GOOGLEUS false
142.250.185.193
 googlehosted.l.googleusercontent.com United States
15169 GOOGLEUS false

Contacted Domains

Name IP Active
drive.google.com 142.250.181.238 true
googlehosted.l.googleusercontent.com 142.250.185.193 true
checkip.dyndns.com 132.226.8.169 true
checkip.dyndns.org unknown unknown
doc-0s-a8-docs.googleusercontent.com unknown unknown

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://checkip.dyndns.org/ true
  • 0%, Virustotal, Browse
  • Avira URL Cloud: safe
 unknown
https://doc-0s-a8-docs.googleusercontent.com/docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/mjejjps3gi1cd44ihbckcd43d7dn78od/1679306700000/12467729248612761337/*/1XARcr4sm_5_dvnsnsVtsDOfjHfua_08k?e=download&uuid=dc7be3b5-c5f0-4bcb-ad3e-a7d72194b047 false
    		high