darkcomet | 6d4173e33b7500723a39d4a3574afdcd9aeb011bad8762c6c4211f91f263b8cf

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

description	ioc	Process
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
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winupdate.exe

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

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

Windows security bypass 2 TTPs 2 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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.exe

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	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	707f1e6f8e6d1aa92f4c3bda970cfe38_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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4996	winupdate.exe

Windows security modification 2 TTPs 2 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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "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-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	707f1e6f8e6d1aa92f4c3bda970cfe38_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	707f1e6f8e6d1aa92f4c3bda970cfe38_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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	707f1e6f8e6d1aa92f4c3bda970cfe38_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

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	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.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\	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeSecurityPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeBackupPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeRestorePrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeShutdownPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeDebugPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeUndockPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: 33	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: 34	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: 35	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: 36	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4996	winupdate.exe
Token: SeSecurityPrivilege	4996	winupdate.exe
Token: SeTakeOwnershipPrivilege	4996	winupdate.exe
Token: SeLoadDriverPrivilege	4996	winupdate.exe
Token: SeSystemProfilePrivilege	4996	winupdate.exe
Token: SeSystemtimePrivilege	4996	winupdate.exe
Token: SeProfSingleProcessPrivilege	4996	winupdate.exe
Token: SeIncBasePriorityPrivilege	4996	winupdate.exe
Token: SeCreatePagefilePrivilege	4996	winupdate.exe
Token: SeBackupPrivilege	4996	winupdate.exe
Token: SeRestorePrivilege	4996	winupdate.exe
Token: SeShutdownPrivilege	4996	winupdate.exe
Token: SeDebugPrivilege	4996	winupdate.exe
Token: SeSystemEnvironmentPrivilege	4996	winupdate.exe
Token: SeChangeNotifyPrivilege	4996	winupdate.exe
Token: SeRemoteShutdownPrivilege	4996	winupdate.exe
Token: SeUndockPrivilege	4996	winupdate.exe
Token: SeManageVolumePrivilege	4996	winupdate.exe
Token: SeImpersonatePrivilege	4996	winupdate.exe
Token: SeCreateGlobalPrivilege	4996	winupdate.exe
Token: 33	4996	winupdate.exe
Token: 34	4996	winupdate.exe
Token: 35	4996	winupdate.exe
Token: 36	4996	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4996	winupdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 4996	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe	87
PID 3080 wrote to memory of 4996	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe	87
PID 3080 wrote to memory of 4996	3080	707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe	87

System policy modification 1 TTPs 3 IoCs

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\707f1e6f8e6d1aa92f4c3bda970cfe38_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\707f1e6f8e6d1aa92f4c3bda970cfe38_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:3080
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - 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 use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:4996

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

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

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