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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Executes dropped EXE 3 IoCs

pid	Process
3068	JUEGO_SERPIENTE.EXE
2140	winupdate.exe
2012	winupdate.exe

Loads dropped DLL 10 IoCs

pid	Process
2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
2140	winupdate.exe
2140	winupdate.exe
2140	winupdate.exe
2140	winupdate.exe
2012	winupdate.exe
2012	winupdate.exe
2012	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\Windupdt\\winupdate.exe"	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2140 set thread context of 2012	2140	winupdate.exe	33

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 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\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	winupdate.exe
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

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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2012	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSecurityPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeTakeOwnershipPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeLoadDriverPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSystemProfilePrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSystemtimePrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeProfSingleProcessPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeIncBasePriorityPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeCreatePagefilePrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeBackupPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeRestorePrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeShutdownPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeDebugPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeSystemEnvironmentPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeChangeNotifyPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeRemoteShutdownPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeUndockPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeManageVolumePrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeImpersonatePrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeCreateGlobalPrivilege	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 33	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 34	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: 35	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
Token: SeIncreaseQuotaPrivilege	2012	winupdate.exe
Token: SeSecurityPrivilege	2012	winupdate.exe
Token: SeTakeOwnershipPrivilege	2012	winupdate.exe
Token: SeLoadDriverPrivilege	2012	winupdate.exe
Token: SeSystemProfilePrivilege	2012	winupdate.exe
Token: SeSystemtimePrivilege	2012	winupdate.exe
Token: SeProfSingleProcessPrivilege	2012	winupdate.exe
Token: SeIncBasePriorityPrivilege	2012	winupdate.exe
Token: SeCreatePagefilePrivilege	2012	winupdate.exe
Token: SeBackupPrivilege	2012	winupdate.exe
Token: SeRestorePrivilege	2012	winupdate.exe
Token: SeShutdownPrivilege	2012	winupdate.exe
Token: SeDebugPrivilege	2012	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2012	winupdate.exe
Token: SeChangeNotifyPrivilege	2012	winupdate.exe
Token: SeRemoteShutdownPrivilege	2012	winupdate.exe
Token: SeUndockPrivilege	2012	winupdate.exe
Token: SeManageVolumePrivilege	2012	winupdate.exe
Token: SeImpersonatePrivilege	2012	winupdate.exe
Token: SeCreateGlobalPrivilege	2012	winupdate.exe
Token: 33	2012	winupdate.exe
Token: 34	2012	winupdate.exe
Token: 35	2012	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
2140	winupdate.exe
2012	winupdate.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2844 wrote to memory of 2980	2844	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	30
PID 2980 wrote to memory of 3068	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	31
PID 2980 wrote to memory of 3068	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	31
PID 2980 wrote to memory of 3068	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	31
PID 2980 wrote to memory of 3068	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	31
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2980 wrote to memory of 2140	2980	JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe	32
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33
PID 2140 wrote to memory of 2012	2140	winupdate.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d267f4e282ea7e2160701752190d17f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844
- 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
  - Loads dropped DLL
  - 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
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2980
- - 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:3068
- - C:\Windows\Windupdt\winupdate.exe
    "C:\Windows\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2140
  - - 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
      Loads dropped DLL
      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:2012

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