Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
02-12-2024 19:50
Behavioral task
behavioral1
Sample
b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Resource
win7-20240903-en
General
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Target
b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
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Size
713KB
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MD5
b9e35c88cd9ad3d9ab974984da9c46a3
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SHA1
673de3456726901eef20fa19c98f08f0c50e35d4
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SHA256
e1d10981abcaacfe456b45c752433ab5494df4544dbfa4ed85623ebdecde7bc4
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SHA512
d48324a72109333b53c66813fce02a3b6c49ecacd5865088d6051353eb1e53a22d64e56e1532c3791e0e4670b4e572b7a0b67fb331543a03b4d08cb023e39900
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SSDEEP
12288:gaAchpWsuVtDnBsBDJIcynnC90levX4CuYf2D82T3s99+VHuNKD:RAEE3uBDhynCylQgi63O9+VuNy
Malware Config
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" b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe -
Modifies firewall policy service 3 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile winupdate.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1" winupdate.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" winupdate.exe -
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 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe -
Executes dropped EXE 1 IoCs
pid Process 4464 winupdate.exe -
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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.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 winupdate.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.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 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.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 Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier winupdate.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier winupdate.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeSecurityPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeTakeOwnershipPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeLoadDriverPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeSystemProfilePrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeSystemtimePrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeProfSingleProcessPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeIncBasePriorityPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeCreatePagefilePrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeBackupPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeRestorePrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeShutdownPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeDebugPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeSystemEnvironmentPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeChangeNotifyPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeRemoteShutdownPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeUndockPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeManageVolumePrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeImpersonatePrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeCreateGlobalPrivilege 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: 33 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: 34 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: 35 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: 36 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe Token: SeIncreaseQuotaPrivilege 4464 winupdate.exe Token: SeSecurityPrivilege 4464 winupdate.exe Token: SeTakeOwnershipPrivilege 4464 winupdate.exe Token: SeLoadDriverPrivilege 4464 winupdate.exe Token: SeSystemProfilePrivilege 4464 winupdate.exe Token: SeSystemtimePrivilege 4464 winupdate.exe Token: SeProfSingleProcessPrivilege 4464 winupdate.exe Token: SeIncBasePriorityPrivilege 4464 winupdate.exe Token: SeCreatePagefilePrivilege 4464 winupdate.exe Token: SeBackupPrivilege 4464 winupdate.exe Token: SeRestorePrivilege 4464 winupdate.exe Token: SeShutdownPrivilege 4464 winupdate.exe Token: SeDebugPrivilege 4464 winupdate.exe Token: SeSystemEnvironmentPrivilege 4464 winupdate.exe Token: SeChangeNotifyPrivilege 4464 winupdate.exe Token: SeRemoteShutdownPrivilege 4464 winupdate.exe Token: SeUndockPrivilege 4464 winupdate.exe Token: SeManageVolumePrivilege 4464 winupdate.exe Token: SeImpersonatePrivilege 4464 winupdate.exe Token: SeCreateGlobalPrivilege 4464 winupdate.exe Token: 33 4464 winupdate.exe Token: 34 4464 winupdate.exe Token: 35 4464 winupdate.exe Token: 36 4464 winupdate.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4332 wrote to memory of 4464 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe 82 PID 4332 wrote to memory of 4464 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe 82 PID 4332 wrote to memory of 4464 4332 b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.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
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4332 -
C:\Windupdt\winupdate.exe"C:\Windupdt\winupdate.exe"2⤵
- Modifies firewall policy service
- 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 use of AdjustPrivilegeToken
PID:4464
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
5Replay Monitor
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Downloads
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Filesize
713KB
MD5b9e35c88cd9ad3d9ab974984da9c46a3
SHA1673de3456726901eef20fa19c98f08f0c50e35d4
SHA256e1d10981abcaacfe456b45c752433ab5494df4544dbfa4ed85623ebdecde7bc4
SHA512d48324a72109333b53c66813fce02a3b6c49ecacd5865088d6051353eb1e53a22d64e56e1532c3791e0e4670b4e572b7a0b67fb331543a03b4d08cb023e39900