darkcomet | 590df4b2c85d04c69c2919ad8b447a4778ddb34d80bee862da41188214d1d80f

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\Windupdt\\winupdate.exe"	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Modifies security service 2 TTPs 1 IoCs

defense_evasion

Modify Registry

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	winupdate.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

Disables Task Manager via registry modification
defense_evasion

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_2d267f4e282ea7e2160701752190d17f.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-1-5-21-2593460650-190333679-3676257533-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Executes dropped EXE 3 IoCs

pid	Process
2316	JUEGO_SERPIENTE.EXE
3488	winupdate.exe
1796	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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\Windupdt\\winupdate.exe"	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4472 set thread context of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 3488 set thread context of 1796	3488	winupdate.exe	100

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\Windupdt\winupdate.exe	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
File opened for modification	C:\Windows\Windupdt\winupdate.exe	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
File opened for modification	C:\Windows\Windupdt\	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
File opened for modification	C:\Windows\Windupdt\winupdate.exe	winupdate.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 5 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_2d267f4e282ea7e2160701752190d17f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JUEGO_SERPIENTE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.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	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.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_2d267f4e282ea7e2160701752190d17f.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\	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1796	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSecurityPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeTakeOwnershipPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeLoadDriverPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSystemProfilePrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSystemtimePrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeProfSingleProcessPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeIncBasePriorityPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeCreatePagefilePrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeBackupPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeRestorePrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeShutdownPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeDebugPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSystemEnvironmentPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeChangeNotifyPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeRemoteShutdownPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeUndockPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeManageVolumePrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeImpersonatePrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeCreateGlobalPrivilege	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 33	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 34	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 35	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 36	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeIncreaseQuotaPrivilege	1796	winupdate.exe
Token: SeSecurityPrivilege	1796	winupdate.exe
Token: SeTakeOwnershipPrivilege	1796	winupdate.exe
Token: SeLoadDriverPrivilege	1796	winupdate.exe
Token: SeSystemProfilePrivilege	1796	winupdate.exe
Token: SeSystemtimePrivilege	1796	winupdate.exe
Token: SeProfSingleProcessPrivilege	1796	winupdate.exe
Token: SeIncBasePriorityPrivilege	1796	winupdate.exe
Token: SeCreatePagefilePrivilege	1796	winupdate.exe
Token: SeBackupPrivilege	1796	winupdate.exe
Token: SeRestorePrivilege	1796	winupdate.exe
Token: SeShutdownPrivilege	1796	winupdate.exe
Token: SeDebugPrivilege	1796	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1796	winupdate.exe
Token: SeChangeNotifyPrivilege	1796	winupdate.exe
Token: SeRemoteShutdownPrivilege	1796	winupdate.exe
Token: SeUndockPrivilege	1796	winupdate.exe
Token: SeManageVolumePrivilege	1796	winupdate.exe
Token: SeImpersonatePrivilege	1796	winupdate.exe
Token: SeCreateGlobalPrivilege	1796	winupdate.exe
Token: 33	1796	winupdate.exe
Token: 34	1796	winupdate.exe
Token: 35	1796	winupdate.exe
Token: 36	1796	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
3488	winupdate.exe
1796	winupdate.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4472 wrote to memory of 4832	4472	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	95
PID 4832 wrote to memory of 2316	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	96
PID 4832 wrote to memory of 2316	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	96
PID 4832 wrote to memory of 2316	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	96
PID 4832 wrote to memory of 3488	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	97
PID 4832 wrote to memory of 3488	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	97
PID 4832 wrote to memory of 3488	4832	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	97
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100
PID 3488 wrote to memory of 1796	3488	winupdate.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in Windows directory
  - 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:4832
- - C:\Users\Admin\AppData\Local\Temp\JUEGO_SERPIENTE.EXE
    "C:\Users\Admin\AppData\Local\Temp\JUEGO_SERPIENTE.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2316
- - C:\Windows\Windupdt\winupdate.exe
    "C:\Windows\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3488
  - - C:\Windows\Windupdt\winupdate.exe
      "C:\Windows\Windupdt\winupdate.exe"
      4⤵
      Modifies security 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 behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1796

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 Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery