darkcomet | 8c651078845aa82b8dbd1e716f7790b26b87a605a157e7cdb0ca88f1d86df0b9

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 6 IoCs

evasion

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

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

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

Windows Service

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	explorer.exe
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"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe

Checks BIOS information in registry 2 TTPs 3 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	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.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-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4796	USE FOR WIN7 64 BIT AND XP.EXE
856	winupdate.exe

Windows security modification 2 TTPs 1 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

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-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4164 set thread context of 4440	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 12 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	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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\Identifier	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.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\	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4440	explorer.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeSecurityPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeBackupPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeRestorePrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeShutdownPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeDebugPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeUndockPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: 33	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: 34	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: 35	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: 36	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4440	explorer.exe
Token: SeSecurityPrivilege	4440	explorer.exe
Token: SeTakeOwnershipPrivilege	4440	explorer.exe
Token: SeLoadDriverPrivilege	4440	explorer.exe
Token: SeSystemProfilePrivilege	4440	explorer.exe
Token: SeSystemtimePrivilege	4440	explorer.exe
Token: SeProfSingleProcessPrivilege	4440	explorer.exe
Token: SeIncBasePriorityPrivilege	4440	explorer.exe
Token: SeCreatePagefilePrivilege	4440	explorer.exe
Token: SeBackupPrivilege	4440	explorer.exe
Token: SeRestorePrivilege	4440	explorer.exe
Token: SeShutdownPrivilege	4440	explorer.exe
Token: SeDebugPrivilege	4440	explorer.exe
Token: SeSystemEnvironmentPrivilege	4440	explorer.exe
Token: SeChangeNotifyPrivilege	4440	explorer.exe
Token: SeRemoteShutdownPrivilege	4440	explorer.exe
Token: SeUndockPrivilege	4440	explorer.exe
Token: SeManageVolumePrivilege	4440	explorer.exe
Token: SeImpersonatePrivilege	4440	explorer.exe
Token: SeCreateGlobalPrivilege	4440	explorer.exe
Token: 33	4440	explorer.exe
Token: 34	4440	explorer.exe
Token: 35	4440	explorer.exe
Token: 36	4440	explorer.exe
Token: SeIncreaseQuotaPrivilege	856	winupdate.exe
Token: SeSecurityPrivilege	856	winupdate.exe
Token: SeTakeOwnershipPrivilege	856	winupdate.exe
Token: SeLoadDriverPrivilege	856	winupdate.exe
Token: SeSystemProfilePrivilege	856	winupdate.exe
Token: SeSystemtimePrivilege	856	winupdate.exe
Token: SeProfSingleProcessPrivilege	856	winupdate.exe
Token: SeIncBasePriorityPrivilege	856	winupdate.exe
Token: SeCreatePagefilePrivilege	856	winupdate.exe
Token: SeBackupPrivilege	856	winupdate.exe
Token: SeRestorePrivilege	856	winupdate.exe
Token: SeShutdownPrivilege	856	winupdate.exe
Token: SeDebugPrivilege	856	winupdate.exe
Token: SeSystemEnvironmentPrivilege	856	winupdate.exe
Token: SeChangeNotifyPrivilege	856	winupdate.exe
Token: SeRemoteShutdownPrivilege	856	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4440	explorer.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4164 wrote to memory of 4796	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	86
PID 4164 wrote to memory of 4796	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	86
PID 4164 wrote to memory of 4796	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	86
PID 4164 wrote to memory of 4440	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	87
PID 4164 wrote to memory of 4440	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	87
PID 4164 wrote to memory of 4440	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	87
PID 4164 wrote to memory of 4440	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	87
PID 4164 wrote to memory of 4440	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	87
PID 4164 wrote to memory of 856	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	88
PID 4164 wrote to memory of 856	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	88
PID 4164 wrote to memory of 856	4164	3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3c8b4d8f83938f3cbe3c77296f035b1f_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4164
- C:\Users\Admin\AppData\Local\Temp\USE FOR WIN7 64 BIT AND XP.EXE
  "C:\Users\Admin\AppData\Local\Temp\USE FOR WIN7 64 BIT AND XP.EXE"
  2⤵
  - Executes dropped EXE
  PID:4796
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Checks BIOS information in registry
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4440
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Windows security modification
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:856

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