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
04-11-2024 06:49
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe
Resource
win7-20240903-en
windows7-x64
15 signatures
150 seconds
General
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Target
8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe
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Size
1.0MB
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MD5
8fbd83dc816c94550613d3224ff57280
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SHA1
aecf122978d42252be280f2fc7efde085f7defd9
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SHA256
6a4b915b14136d4c5ccc1a606c5d8281a7c217c261e0215af759d8d7ea121de3
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SHA512
93ed5d86e31c1fd98e847c1f0c222c2cdc3c09d8cd222092010b23713134c60dd813aea0275c46b237bf807839576b2bd43db0cdb654f2eae10e735f8e5c7cd3
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SSDEEP
24576:A5ifoSQrNRWA2+h7UcwvrrULxWuiOEn5klx4qNRX:DZQ732+hAJrUWFOs2lpXX
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" 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe -
Executes dropped EXE 1 IoCs
pid Process 364 winupdate.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windupdt\\winupdate.exe" 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windupdt\\winupdate.exe" winupdate.exe -
resource yara_rule behavioral2/memory/4388-3-0x0000000039FB0000-0x0000000039FC1000-memory.dmp upx behavioral2/memory/4388-1-0x0000000039FB0000-0x0000000039FC1000-memory.dmp upx behavioral2/memory/4388-0-0x0000000039FB0000-0x0000000039FC1000-memory.dmp upx behavioral2/memory/4388-2-0x0000000039FB0000-0x0000000039FC1000-memory.dmp upx behavioral2/memory/4388-4-0x000000003CA40000-0x000000003CA78000-memory.dmp upx behavioral2/memory/4388-100-0x0000000039FB0000-0x0000000039FC1000-memory.dmp upx behavioral2/memory/364-108-0x0000000039F70000-0x0000000039F81000-memory.dmp upx behavioral2/memory/364-107-0x0000000039F70000-0x0000000039F81000-memory.dmp upx behavioral2/memory/364-106-0x0000000039F70000-0x0000000039F81000-memory.dmp upx behavioral2/memory/364-105-0x0000000039F70000-0x0000000039F81000-memory.dmp upx behavioral2/memory/364-109-0x000000003C150000-0x000000003C188000-memory.dmp upx -
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 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winupdate.exe -
Checks processor information in registry 2 TTPs 14 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet winupdate.exe Key queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.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 Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 winupdate.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString winupdate.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier 8fbd83dc816c94550613d3224ff57280_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\ 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeSecurityPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeTakeOwnershipPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeLoadDriverPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeSystemProfilePrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeSystemtimePrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeProfSingleProcessPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeIncBasePriorityPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeCreatePagefilePrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeBackupPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeRestorePrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeShutdownPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeDebugPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeSystemEnvironmentPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeChangeNotifyPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeRemoteShutdownPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeUndockPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeManageVolumePrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeImpersonatePrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeCreateGlobalPrivilege 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: 33 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: 34 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: 35 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: 36 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe Token: SeIncreaseQuotaPrivilege 364 winupdate.exe Token: SeSecurityPrivilege 364 winupdate.exe Token: SeTakeOwnershipPrivilege 364 winupdate.exe Token: SeLoadDriverPrivilege 364 winupdate.exe Token: SeSystemProfilePrivilege 364 winupdate.exe Token: SeSystemtimePrivilege 364 winupdate.exe Token: SeProfSingleProcessPrivilege 364 winupdate.exe Token: SeIncBasePriorityPrivilege 364 winupdate.exe Token: SeCreatePagefilePrivilege 364 winupdate.exe Token: SeBackupPrivilege 364 winupdate.exe Token: SeRestorePrivilege 364 winupdate.exe Token: SeShutdownPrivilege 364 winupdate.exe Token: SeDebugPrivilege 364 winupdate.exe Token: SeSystemEnvironmentPrivilege 364 winupdate.exe Token: SeChangeNotifyPrivilege 364 winupdate.exe Token: SeRemoteShutdownPrivilege 364 winupdate.exe Token: SeUndockPrivilege 364 winupdate.exe Token: SeManageVolumePrivilege 364 winupdate.exe Token: SeImpersonatePrivilege 364 winupdate.exe Token: SeCreateGlobalPrivilege 364 winupdate.exe Token: 33 364 winupdate.exe Token: 34 364 winupdate.exe Token: 35 364 winupdate.exe Token: 36 364 winupdate.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 364 winupdate.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4388 wrote to memory of 364 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe 85 PID 4388 wrote to memory of 364 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe 85 PID 4388 wrote to memory of 364 4388 8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\8fbd83dc816c94550613d3224ff57280_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\8fbd83dc816c94550613d3224ff57280_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:4388 -
C:\Windupdt\winupdate.exe"C:\Windupdt\winupdate.exe"2⤵
- Checks BIOS information in registry
- Executes dropped EXE
- 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 SetWindowsHookEx
PID:364
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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
1.0MB
MD58fbd83dc816c94550613d3224ff57280
SHA1aecf122978d42252be280f2fc7efde085f7defd9
SHA2566a4b915b14136d4c5ccc1a606c5d8281a7c217c261e0215af759d8d7ea121de3
SHA51293ed5d86e31c1fd98e847c1f0c222c2cdc3c09d8cd222092010b23713134c60dd813aea0275c46b237bf807839576b2bd43db0cdb654f2eae10e735f8e5c7cd3