darkcomet | 01b69d1f321f028ced66f438204789ef1327aa7fd69619b5840994362fb50510

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\system32\\winlogon.exe"	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 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	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

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

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
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	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winlogon.exe

Executes dropped EXE 2 IoCs

pid	Process
2944	winlogon.exe
2388	winlogon.exe

Loads dropped DLL 3 IoCs

pid	Process
1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
2944	winlogon.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\UpdatesDisableNotify = "1"	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32\\winlogon.exe"	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 880 set thread context of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 2944 set thread context of 2388	2944	winlogon.exe	32

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 4 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	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.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\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	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winlogon.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	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winlogon.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2388	winlogon.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeSecurityPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeBackupPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeRestorePrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeShutdownPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeDebugPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeUndockPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: 33	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: 34	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: 35	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2388	winlogon.exe
Token: SeSecurityPrivilege	2388	winlogon.exe
Token: SeTakeOwnershipPrivilege	2388	winlogon.exe
Token: SeLoadDriverPrivilege	2388	winlogon.exe
Token: SeSystemProfilePrivilege	2388	winlogon.exe
Token: SeSystemtimePrivilege	2388	winlogon.exe
Token: SeProfSingleProcessPrivilege	2388	winlogon.exe
Token: SeIncBasePriorityPrivilege	2388	winlogon.exe
Token: SeCreatePagefilePrivilege	2388	winlogon.exe
Token: SeBackupPrivilege	2388	winlogon.exe
Token: SeRestorePrivilege	2388	winlogon.exe
Token: SeShutdownPrivilege	2388	winlogon.exe
Token: SeDebugPrivilege	2388	winlogon.exe
Token: SeSystemEnvironmentPrivilege	2388	winlogon.exe
Token: SeChangeNotifyPrivilege	2388	winlogon.exe
Token: SeRemoteShutdownPrivilege	2388	winlogon.exe
Token: SeUndockPrivilege	2388	winlogon.exe
Token: SeManageVolumePrivilege	2388	winlogon.exe
Token: SeImpersonatePrivilege	2388	winlogon.exe
Token: SeCreateGlobalPrivilege	2388	winlogon.exe
Token: 33	2388	winlogon.exe
Token: 34	2388	winlogon.exe
Token: 35	2388	winlogon.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
2944	winlogon.exe
2388	winlogon.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 880 wrote to memory of 1364	880	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	30
PID 1364 wrote to memory of 2944	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	31
PID 1364 wrote to memory of 2944	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	31
PID 1364 wrote to memory of 2944	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	31
PID 1364 wrote to memory of 2944	1364	69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe	31
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32
PID 2944 wrote to memory of 2388	2944	winlogon.exe	32

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

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

C:\Users\Admin\AppData\Local\Temp\69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Local\Temp\69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\69b1f8ff1e49b78c12fa6657cdef2017_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Loads dropped DLL
  - 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:1364
- - C:\system32\winlogon.exe
    "C:\system32\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2944
  - - C:\system32\winlogon.exe
      C:\system32\winlogon.exe
      4⤵
      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:2388

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