Analysis
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max time kernel
149s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
26/02/2025, 11:32
Behavioral task
behavioral1
Sample
JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe
Resource
win10v2004-20250217-en
General
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Target
JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe
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Size
811KB
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MD5
25a7e92820a8ca1e5571bc5a546fdee8
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SHA1
fc6d6c499b5fc213093d3470c8a3a2af7bd83a54
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SHA256
26f9f8ca45e78dc6649bde7867fba0b5e76534ed8cfa176b096b06c0b0db7864
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SHA512
085e558cc21d10d9cf57a155580ac8e834a62f85ad233c15ee7adb7120a23d78d25754bd94be799ed89f209fd374cd1a6fb8b31309e53927cedc3444f64bef7b
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SSDEEP
12288:oaAchpWsuVTv7ItY8XljyypHP7cOLBev03hlULsmWZ++09ZcKDVsgdGO4V:JAEENIq8XwyVPQclDq/+WnpsSM
Malware Config
Extracted
darkcomet
Guest16
windowsconnect.no-ip.biz:1604
DC_MUTEX-57WVE57
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InstallPath
Windupdt\winupdate.exe
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gencode
jka3Rd.�*-Ay
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
winupdater
Signatures
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Darkcomet family
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe" JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe -
Windows security bypass 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" winupdate.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate winupdate.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe -
Executes dropped EXE 1 IoCs
pid Process 1928 winupdate.exe -
Windows security modification 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" winupdate.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winupdate.exe -
Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier winupdate.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1928 winupdate.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeSecurityPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeTakeOwnershipPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeLoadDriverPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeSystemProfilePrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeSystemtimePrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeProfSingleProcessPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeIncBasePriorityPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeCreatePagefilePrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeBackupPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeRestorePrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeShutdownPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeDebugPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeSystemEnvironmentPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeChangeNotifyPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeRemoteShutdownPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeUndockPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeManageVolumePrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeImpersonatePrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeCreateGlobalPrivilege 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: 33 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: 34 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: 35 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: 36 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe Token: SeIncreaseQuotaPrivilege 1928 winupdate.exe Token: SeSecurityPrivilege 1928 winupdate.exe Token: SeTakeOwnershipPrivilege 1928 winupdate.exe Token: SeLoadDriverPrivilege 1928 winupdate.exe Token: SeSystemProfilePrivilege 1928 winupdate.exe Token: SeSystemtimePrivilege 1928 winupdate.exe Token: SeProfSingleProcessPrivilege 1928 winupdate.exe Token: SeIncBasePriorityPrivilege 1928 winupdate.exe Token: SeCreatePagefilePrivilege 1928 winupdate.exe Token: SeBackupPrivilege 1928 winupdate.exe Token: SeRestorePrivilege 1928 winupdate.exe Token: SeShutdownPrivilege 1928 winupdate.exe Token: SeDebugPrivilege 1928 winupdate.exe Token: SeSystemEnvironmentPrivilege 1928 winupdate.exe Token: SeChangeNotifyPrivilege 1928 winupdate.exe Token: SeRemoteShutdownPrivilege 1928 winupdate.exe Token: SeUndockPrivilege 1928 winupdate.exe Token: SeManageVolumePrivilege 1928 winupdate.exe Token: SeImpersonatePrivilege 1928 winupdate.exe Token: SeCreateGlobalPrivilege 1928 winupdate.exe Token: 33 1928 winupdate.exe Token: 34 1928 winupdate.exe Token: 35 1928 winupdate.exe Token: 36 1928 winupdate.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1928 winupdate.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1704 wrote to memory of 1928 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe 89 PID 1704 wrote to memory of 1928 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe 89 PID 1704 wrote to memory of 1928 1704 JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25a7e92820a8ca1e5571bc5a546fdee8.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Windupdt\winupdate.exe"C:\Windupdt\winupdate.exe"2⤵
- Windows security bypass
- Checks BIOS information in registry
- Executes dropped EXE
- Windows security modification
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1928
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Replay Monitor
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Downloads
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Filesize
811KB
MD525a7e92820a8ca1e5571bc5a546fdee8
SHA1fc6d6c499b5fc213093d3470c8a3a2af7bd83a54
SHA25626f9f8ca45e78dc6649bde7867fba0b5e76534ed8cfa176b096b06c0b0db7864
SHA512085e558cc21d10d9cf57a155580ac8e834a62f85ad233c15ee7adb7120a23d78d25754bd94be799ed89f209fd374cd1a6fb8b31309e53927cedc3444f64bef7b