darkcomet | a52b02e2f1023dcd1dfec407f2750f712638634354210772a5d712630e661d53

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\system32\\winlogon.exe"	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe

Modifies firewall policy service 3 TTPs 3 IoCs

defense_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	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	winlogon.exe

Modifies security service 2 TTPs 1 IoCs

defense_evasion

Modify Registry

Windows Service

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

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

Disables Task Manager via registry modification
defense_evasion

Downloads MZ/PE file 1 IoCs

flow	pid	Process
35	3044	Process not Found

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_ee07d267f13cef6b000817cccd2d99c3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winlogon.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-1-5-21-2508704002-2325818048-3575902788-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe

Executes dropped EXE 1 IoCs

pid	Process
336	winlogon.exe

Windows security modification 2 TTPs 2 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"	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winlogon.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-1-5-21-2508704002-2325818048-3575902788-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.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 3 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_ee07d267f13cef6b000817cccd2d99c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2492	MicrosoftEdgeUpdate.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	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winlogon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winlogon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winlogon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winlogon.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.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_ee07d267f13cef6b000817cccd2d99c3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winlogon.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
336	winlogon.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeSecurityPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeTakeOwnershipPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeLoadDriverPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeSystemProfilePrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeSystemtimePrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeProfSingleProcessPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeIncBasePriorityPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeCreatePagefilePrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeBackupPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeRestorePrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeShutdownPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeDebugPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeSystemEnvironmentPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeChangeNotifyPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeRemoteShutdownPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeUndockPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeManageVolumePrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeImpersonatePrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeCreateGlobalPrivilege	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: 33	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: 34	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: 35	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: 36	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
Token: SeIncreaseQuotaPrivilege	336	winlogon.exe
Token: SeSecurityPrivilege	336	winlogon.exe
Token: SeTakeOwnershipPrivilege	336	winlogon.exe
Token: SeLoadDriverPrivilege	336	winlogon.exe
Token: SeSystemProfilePrivilege	336	winlogon.exe
Token: SeSystemtimePrivilege	336	winlogon.exe
Token: SeProfSingleProcessPrivilege	336	winlogon.exe
Token: SeIncBasePriorityPrivilege	336	winlogon.exe
Token: SeCreatePagefilePrivilege	336	winlogon.exe
Token: SeBackupPrivilege	336	winlogon.exe
Token: SeRestorePrivilege	336	winlogon.exe
Token: SeShutdownPrivilege	336	winlogon.exe
Token: SeDebugPrivilege	336	winlogon.exe
Token: SeSystemEnvironmentPrivilege	336	winlogon.exe
Token: SeChangeNotifyPrivilege	336	winlogon.exe
Token: SeRemoteShutdownPrivilege	336	winlogon.exe
Token: SeUndockPrivilege	336	winlogon.exe
Token: SeManageVolumePrivilege	336	winlogon.exe
Token: SeImpersonatePrivilege	336	winlogon.exe
Token: SeCreateGlobalPrivilege	336	winlogon.exe
Token: 33	336	winlogon.exe
Token: 34	336	winlogon.exe
Token: 35	336	winlogon.exe
Token: 36	336	winlogon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
336	winlogon.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 336	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe	90
PID 1768 wrote to memory of 336	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe	90
PID 1768 wrote to memory of 336	1768	JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe	90

System policy modification 1 TTPs 3 IoCs

defense_evasion

Modify Registry

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

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ee07d267f13cef6b000817cccd2d99c3.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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768
- C:\system32\winlogon.exe
  "C:\system32\winlogon.exe"
  2⤵
  - Modifies firewall policy service
  - 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
  - System policy modification
  PID:336

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIwIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMyMzYiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDI1MTE0ODAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1NTg1NDY3OTEzIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2492

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