Windows Analysis Report
rAEAT-AvisodeNotificaci__n.exe

Overview

General Information

Sample Name: rAEAT-AvisodeNotificaci__n.exe
Analysis ID: 830397
MD5: 77b1761153f7e6ca4b76ea26c2fa6645
SHA1: be00353381302d16a62c114efa564acf60473368
SHA256: dbb02fdfea2855cb95d3a6a2668fd5392b9d997200277d98fb758db781880523
Tags: exe
Infos:

Detection

GuLoader
Score: 60
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Yara detected GuLoader
Tries to detect virtualization through RDTSC time measurements
Uses 32bit PE files
PE file does not import any functions
Drops PE files
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Binary contains a suspicious time stamp
Detected potential crypto function
PE / OLE file has an invalid certificate
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Abnormal high CPU Usage
Contains functionality for read data from the clipboard

Classification

Uses 32bit PE files
Source: rAEAT-AvisodeNotificaci__n.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Registry value created: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Replyingly\Avnbgen\Spisekamrenes Jump to behavior
Source: rAEAT-AvisodeNotificaci__n.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
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: 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: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_0040596D GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_0040596D
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_004065A2 FindFirstFileW,FindClose, 0_2_004065A2
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_00402862 FindFirstFileW, 0_2_00402862
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: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://crl.certum.pl/ctnca.crl0k
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://crl.certum.pl/ctnca2.crl0l
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://crl.certum.pl/ctsca2021.crl0o
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://repository.certum.pl/ctnca.cer09
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://repository.certum.pl/ctnca2.cer09
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://repository.certum.pl/ctsca2021.cer0
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://subca.ocsp-certum.com01
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://subca.ocsp-certum.com02
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://subca.ocsp-certum.com05
Source: rAEAT-AvisodeNotificaci__n.exe String found in binary or memory: http://www.certum.pl/CPS0
Source: rAEAT-AvisodeNotificaci__n.exe, 00000000.00000002.838724066.0000000000789000.00000004.00000001.01000000.00000003.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: rAEAT-AvisodeNotificaci__n.exe, 00000000.00000002.838724066.0000000000789000.00000004.00000001.01000000.00000003.sdmp, System.Reflection.TypeExtensions.dll.0.dr String found in binary or memory: https://github.com/dotnet/runtimeBSJB
Contains functionality for read data from the clipboard
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_00405402 GetDlgItem,GetDlgItem,GetDlgItem,GetDlgItem,GetClientRect,GetSystemMetrics,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,ShowWindow,ShowWindow,GetDlgItem,SendMessageW,SendMessageW,SendMessageW,GetDlgItem,CreateThread,FindCloseChangeNotification,ShowWindow,ShowWindow,ShowWindow,ShowWindow,SendMessageW,CreatePopupMenu,AppendMenuW,GetWindowRect,TrackPopupMenu,SendMessageW,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,SendMessageW,GlobalUnlock,SetClipboardData,CloseClipboard, 0_2_00405402
Uses 32bit PE files
Source: rAEAT-AvisodeNotificaci__n.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE
PE file does not import any functions
Source: System.Reflection.TypeExtensions.dll.0.dr Static PE information: No import functions for PE file found
Contains functionality to shutdown / reboot the system
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.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,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_00403350
Detected potential crypto function
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_00404C3F 0_2_00404C3F
PE / OLE file has an invalid certificate
Source: rAEAT-AvisodeNotificaci__n.exe Static PE information: invalid certificate
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Process Stats: CPU usage > 98%
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File read: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Jump to behavior
Source: rAEAT-AvisodeNotificaci__n.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.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\rAEAT-AvisodeNotificaci__n.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,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_00403350
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File created: C:\Users\user\AppData\Local\Temp\nsv6C01.tmp Jump to behavior
Source: classification engine Classification label: mal60.troj.evad.winEXE@1/14@0/0
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_004020FE CoCreateInstance, 0_2_004020FE
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_004046C3 GetDlgItem,SetWindowTextW,SHBrowseForFolderW,CoTaskMemFree,lstrcmpiW,lstrcatW,SetDlgItemTextW,GetDiskFreeSpaceW,MulDiv,SetDlgItemTextW, 0_2_004046C3
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Registry value created: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Replyingly\Avnbgen\Spisekamrenes Jump to behavior
Source: rAEAT-AvisodeNotificaci__n.exe Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
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: D:\a\_work\1\s\artifacts\obj\System.Reflection.TypeExtensions\net6.0-Release\System.Reflection.TypeExtensions.pdb source: System.Reflection.TypeExtensions.dll.0.dr

Data Obfuscation
barindex
Yara detected GuLoader
Source: Yara match File source: 00000000.00000002.839353767.00000000044BC000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.839353767.0000000004390000.00000040.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\Betegner.But, type: DROPPED
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_10002DE0 push eax; ret 0_2_10002E0E
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]
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_10001B18 GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_10001B18
Drops PE files
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File created: C:\Users\user\AppData\Local\Temp\nsl6CFC.tmp\System.dll Jump to dropped file
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File created: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\Switchboards\Barnls\System.Reflection.Primitives.dll Jump to dropped file
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File created: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\Switchboards\Barnls\System.Reflection.TypeExtensions.dll Jump to dropped file
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe File created: C:\Users\user\AppData\Local\Temp\nsl6CFC.tmp\AdvSplash.dll Jump to dropped file
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion
barindex
Tries to detect virtualization through RDTSC time measurements
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe RDTSC instruction interceptor: First address: 0000000004C6CCE5 second address: 0000000004C6CCE5 instructions: 0x00000000 rdtsc 0x00000002 test ecx, eax 0x00000004 cmp ebx, ecx 0x00000006 jc 00007EFDE12BA31Ch 0x00000008 inc ebp 0x00000009 inc ebx 0x0000000a jmp 00007EFDE12BA39Ah 0x0000000c test bh, ch 0x0000000e rdtsc
Found dropped PE file which has not been started or loaded
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\Switchboards\Barnls\System.Reflection.Primitives.dll Jump to dropped file
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\Musicalises34\Coleman\Biarcuated\Switchboards\Barnls\System.Reflection.TypeExtensions.dll Jump to dropped file
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_0040596D GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose, 0_2_0040596D
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_004065A2 FindFirstFileW,FindClose, 0_2_004065A2
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_00402862 FindFirstFileW, 0_2_00402862
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe API call chain: ExitProcess graph end node
Contains functionality to dynamically determine API calls
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.exe Code function: 0_2_10001B18 GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW, 0_2_10001B18
Source: C:\Users\user\Desktop\rAEAT-AvisodeNotificaci__n.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,CopyFileW,CloseHandle,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess, 0_2_00403350
windows-stand
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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: 830397 Sample: rAEAT-AvisodeNotificaci__n.exe Startdate: 20/03/2023 Architecture: WINDOWS Score: 60 17 Yara detected GuLoader 2->17 5 rAEAT-AvisodeNotificaci__n.exe 5 48 2->5         started        process3 file4 9 C:\Users\user\AppData\Local\...\Betegner.But, data 5->9 dropped 11 C:\Users\user\AppData\Local\...\System.dll, PE32 5->11 dropped 13 C:\Users\user\AppData\Local\...\AdvSplash.dll, PE32 5->13 dropped 15 2 other files (none is malicious) 5->15 dropped 19 Tries to detect virtualization through RDTSC time measurements 5->19 signatures5
⊘No contacted IP infos