darkcomet | e1d10981abcaacfe456b45c752433ab5494df4544dbfa4ed85623ebdecde7bc4

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

evasion

Modify Registry

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winupdate.exe

Windows security bypass 2 TTPs 1 IoCs

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

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	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 1 IoCs

pid	Process
2668	winupdate.exe

Loads dropped DLL 4 IoCs

pid	Process
1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
2668	winupdate.exe
2668	winupdate.exe
2668	winupdate.exe

Windows security modification 2 TTPs 1 IoCs

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-1-5-21-1488793075-819845221-1497111674-1000\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).

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.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.

Query Registry

System Information Discovery

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.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	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeSecurityPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeBackupPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeRestorePrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeShutdownPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeDebugPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeUndockPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: 33	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: 34	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: 35	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2668	winupdate.exe
Token: SeSecurityPrivilege	2668	winupdate.exe
Token: SeTakeOwnershipPrivilege	2668	winupdate.exe
Token: SeLoadDriverPrivilege	2668	winupdate.exe
Token: SeSystemProfilePrivilege	2668	winupdate.exe
Token: SeSystemtimePrivilege	2668	winupdate.exe
Token: SeProfSingleProcessPrivilege	2668	winupdate.exe
Token: SeIncBasePriorityPrivilege	2668	winupdate.exe
Token: SeCreatePagefilePrivilege	2668	winupdate.exe
Token: SeBackupPrivilege	2668	winupdate.exe
Token: SeRestorePrivilege	2668	winupdate.exe
Token: SeShutdownPrivilege	2668	winupdate.exe
Token: SeDebugPrivilege	2668	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2668	winupdate.exe
Token: SeChangeNotifyPrivilege	2668	winupdate.exe
Token: SeRemoteShutdownPrivilege	2668	winupdate.exe
Token: SeUndockPrivilege	2668	winupdate.exe
Token: SeManageVolumePrivilege	2668	winupdate.exe
Token: SeImpersonatePrivilege	2668	winupdate.exe
Token: SeCreateGlobalPrivilege	2668	winupdate.exe
Token: 33	2668	winupdate.exe
Token: 34	2668	winupdate.exe
Token: 35	2668	winupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29
PID 1624 wrote to memory of 2668	1624	b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe	29

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
- Loads dropped DLL
- 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:1624
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Modifies firewall policy service
  - Windows security bypass
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2668

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery