darkcomet | 1ed406800fe84b02e902fe982675094fe87416d6d611f92da2fc335c626ebc9f

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

Windows Service

T1543.003

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

Disables Task Manager via registry modification
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	f75078e54038127175a9427a97a7a18a_JaffaCakes118.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3964	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	f75078e54038127175a9427a97a7a18a_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	f75078e54038127175a9427a97a7a18a_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\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	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f75078e54038127175a9427a97a7a18a_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

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	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	winupdate.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeSecurityPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeBackupPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeRestorePrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeShutdownPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeDebugPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeUndockPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: 33	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: 34	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: 35	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: 36	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3964	winupdate.exe
Token: SeSecurityPrivilege	3964	winupdate.exe
Token: SeTakeOwnershipPrivilege	3964	winupdate.exe
Token: SeLoadDriverPrivilege	3964	winupdate.exe
Token: SeSystemProfilePrivilege	3964	winupdate.exe
Token: SeSystemtimePrivilege	3964	winupdate.exe
Token: SeProfSingleProcessPrivilege	3964	winupdate.exe
Token: SeIncBasePriorityPrivilege	3964	winupdate.exe
Token: SeCreatePagefilePrivilege	3964	winupdate.exe
Token: SeBackupPrivilege	3964	winupdate.exe
Token: SeRestorePrivilege	3964	winupdate.exe
Token: SeShutdownPrivilege	3964	winupdate.exe
Token: SeDebugPrivilege	3964	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3964	winupdate.exe
Token: SeChangeNotifyPrivilege	3964	winupdate.exe
Token: SeRemoteShutdownPrivilege	3964	winupdate.exe
Token: SeUndockPrivilege	3964	winupdate.exe
Token: SeManageVolumePrivilege	3964	winupdate.exe
Token: SeImpersonatePrivilege	3964	winupdate.exe
Token: SeCreateGlobalPrivilege	3964	winupdate.exe
Token: 33	3964	winupdate.exe
Token: 34	3964	winupdate.exe
Token: 35	3964	winupdate.exe
Token: 36	3964	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3688	OpenWith.exe
4048	OpenWith.exe
3964	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4448 wrote to memory of 4312	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe	83
PID 4448 wrote to memory of 4312	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe	83
PID 4448 wrote to memory of 4312	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe	83
PID 4448 wrote to memory of 3964	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe	84
PID 4448 wrote to memory of 3964	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe	84
PID 4448 wrote to memory of 3964	4448	f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe	84
PID 3964 wrote to memory of 3432	3964	winupdate.exe	85
PID 3964 wrote to memory of 3432	3964	winupdate.exe	85
PID 3964 wrote to memory of 3432	3964	winupdate.exe	85

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	winupdate.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\f75078e54038127175a9427a97a7a18a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f75078e54038127175a9427a97a7a18a_JaffaCakes118.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
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  PID:4312
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Modifies security service
  - Checks BIOS information in registry
  - Executes dropped EXE
  - 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 SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3964
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:3432

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:3688

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4048

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

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery