darkcomet | dbc3c401f16b77a0d5d76dd916227f0176f24229d5e5a9f0b42a481f0c4ed7ff

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_e4600be5b908283eea77837a67528e41.exe

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
43	5024	Process not Found

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_e4600be5b908283eea77837a67528e41.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.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3932017190-1449707826-1445630-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe

Executes dropped EXE 1 IoCs

pid	Process
316	winupdate.exe

Windows security modification 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

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

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3932017190-1449707826-1445630-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3428	MicrosoftEdgeUpdate.exe

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_e4600be5b908283eea77837a67528e41.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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeSecurityPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeTakeOwnershipPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeLoadDriverPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeSystemProfilePrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeSystemtimePrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeProfSingleProcessPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeIncBasePriorityPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeCreatePagefilePrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeBackupPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeRestorePrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeShutdownPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeDebugPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeSystemEnvironmentPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeChangeNotifyPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeRemoteShutdownPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeUndockPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeManageVolumePrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeImpersonatePrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeCreateGlobalPrivilege	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: 33	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: 34	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: 35	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: 36	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
Token: SeIncreaseQuotaPrivilege	316	winupdate.exe
Token: SeSecurityPrivilege	316	winupdate.exe
Token: SeTakeOwnershipPrivilege	316	winupdate.exe
Token: SeLoadDriverPrivilege	316	winupdate.exe
Token: SeSystemProfilePrivilege	316	winupdate.exe
Token: SeSystemtimePrivilege	316	winupdate.exe
Token: SeProfSingleProcessPrivilege	316	winupdate.exe
Token: SeIncBasePriorityPrivilege	316	winupdate.exe
Token: SeCreatePagefilePrivilege	316	winupdate.exe
Token: SeBackupPrivilege	316	winupdate.exe
Token: SeRestorePrivilege	316	winupdate.exe
Token: SeShutdownPrivilege	316	winupdate.exe
Token: SeDebugPrivilege	316	winupdate.exe
Token: SeSystemEnvironmentPrivilege	316	winupdate.exe
Token: SeChangeNotifyPrivilege	316	winupdate.exe
Token: SeRemoteShutdownPrivilege	316	winupdate.exe
Token: SeUndockPrivilege	316	winupdate.exe
Token: SeManageVolumePrivilege	316	winupdate.exe
Token: SeImpersonatePrivilege	316	winupdate.exe
Token: SeCreateGlobalPrivilege	316	winupdate.exe
Token: 33	316	winupdate.exe
Token: 34	316	winupdate.exe
Token: 35	316	winupdate.exe
Token: 36	316	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
316	winupdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 732 wrote to memory of 316	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe	87
PID 732 wrote to memory of 316	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe	87
PID 732 wrote to memory of 316	732	JaffaCakes118_e4600be5b908283eea77837a67528e41.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4600be5b908283eea77837a67528e41.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4600be5b908283eea77837a67528e41.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:732
- 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 use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:316

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIzIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY0MzMiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODc1OTU2NTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1Mzg2NjM4MTA5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery