darkcomet | a8f9aa681a2d661027d032b572e8e4c99b9b3bf4985d244982903cc1f10c6c36

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdat-e.exe"	c3fe16884b959232272700439d4d823b_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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winupdat-e.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winupdat-e.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	winupdat-e.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	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdat-e.exe

Executes dropped EXE 3 IoCs

pid	Process
2392	FREE SMS.EXE
2060	winupdat-e.exe
2476	FREE SMS.EXE

Loads dropped DLL 6 IoCs

pid	Process
2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
2060	winupdat-e.exe
2060	winupdat-e.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdat-e.exe"	c3fe16884b959232272700439d4d823b_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 4 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	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FREE SMS.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdat-e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FREE SMS.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\Identifier	winupdat-e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdat-e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdat-e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdat-e.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	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdat-e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2060	winupdat-e.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSecurityPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeBackupPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeRestorePrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeShutdownPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeDebugPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeUndockPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 33	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 34	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 35	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2060	winupdat-e.exe
Token: SeSecurityPrivilege	2060	winupdat-e.exe
Token: SeTakeOwnershipPrivilege	2060	winupdat-e.exe
Token: SeLoadDriverPrivilege	2060	winupdat-e.exe
Token: SeSystemProfilePrivilege	2060	winupdat-e.exe
Token: SeSystemtimePrivilege	2060	winupdat-e.exe
Token: SeProfSingleProcessPrivilege	2060	winupdat-e.exe
Token: SeIncBasePriorityPrivilege	2060	winupdat-e.exe
Token: SeCreatePagefilePrivilege	2060	winupdat-e.exe
Token: SeBackupPrivilege	2060	winupdat-e.exe
Token: SeRestorePrivilege	2060	winupdat-e.exe
Token: SeShutdownPrivilege	2060	winupdat-e.exe
Token: SeDebugPrivilege	2060	winupdat-e.exe
Token: SeSystemEnvironmentPrivilege	2060	winupdat-e.exe
Token: SeChangeNotifyPrivilege	2060	winupdat-e.exe
Token: SeRemoteShutdownPrivilege	2060	winupdat-e.exe
Token: SeUndockPrivilege	2060	winupdat-e.exe
Token: SeManageVolumePrivilege	2060	winupdat-e.exe
Token: SeImpersonatePrivilege	2060	winupdat-e.exe
Token: SeCreateGlobalPrivilege	2060	winupdat-e.exe
Token: 33	2060	winupdat-e.exe
Token: 34	2060	winupdat-e.exe
Token: 35	2060	winupdat-e.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2392	FREE SMS.EXE
2476	FREE SMS.EXE
2060	winupdat-e.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 2392	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2392	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2392	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2392	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2060	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	32
PID 2556 wrote to memory of 2060	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	32
PID 2556 wrote to memory of 2060	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	32
PID 2556 wrote to memory of 2060	2556	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	32
PID 2060 wrote to memory of 2476	2060	winupdat-e.exe	33
PID 2060 wrote to memory of 2476	2060	winupdat-e.exe	33
PID 2060 wrote to memory of 2476	2060	winupdat-e.exe	33
PID 2060 wrote to memory of 2476	2060	winupdat-e.exe	33

C:\Users\Admin\AppData\Local\Temp\c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c3fe16884b959232272700439d4d823b_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:2556
- C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE
  "C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2392
- C:\Windupdt\winupdat-e.exe
  "C:\Windupdt\winupdat-e.exe"
  2⤵
  - Modifies firewall policy service
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - 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
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE
    "C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2476

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

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery