darkcomet | ca3d5ed5e649e04c111100615ca969a8e9e88f0bb2afce3056ba69db7fb07b4f

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
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

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	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 2 IoCs

pid	Process
2784	winupdate.exe
1884	winupdate.exe

Loads dropped DLL 8 IoCs

pid	Process
3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
2784	winupdate.exe
2784	winupdate.exe
2784	winupdate.exe
2784	winupdate.exe
1884	winupdate.exe
1884	winupdate.exe
1884	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2376 set thread context of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 3020 set thread context of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 2784 set thread context of 1884	2784	winupdate.exe	32

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
File created	C:\Windows\SysWOW64	explorer.exe
File created	C:\Windows\SysWOW64	winupdate.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 5 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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f724bf54d8a134608ea974d325c29684_JaffaCakes118.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	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f724bf54d8a134608ea974d325c29684_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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f724bf54d8a134608ea974d325c29684_JaffaCakes118.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	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSecurityPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeBackupPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeRestorePrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeShutdownPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeDebugPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeUndockPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 33	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 34	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 35	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1884	winupdate.exe
Token: SeSecurityPrivilege	1884	winupdate.exe
Token: SeTakeOwnershipPrivilege	1884	winupdate.exe
Token: SeLoadDriverPrivilege	1884	winupdate.exe
Token: SeSystemProfilePrivilege	1884	winupdate.exe
Token: SeSystemtimePrivilege	1884	winupdate.exe
Token: SeProfSingleProcessPrivilege	1884	winupdate.exe
Token: SeIncBasePriorityPrivilege	1884	winupdate.exe
Token: SeCreatePagefilePrivilege	1884	winupdate.exe
Token: SeBackupPrivilege	1884	winupdate.exe
Token: SeRestorePrivilege	1884	winupdate.exe
Token: SeShutdownPrivilege	1884	winupdate.exe
Token: SeDebugPrivilege	1884	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1884	winupdate.exe
Token: SeChangeNotifyPrivilege	1884	winupdate.exe
Token: SeRemoteShutdownPrivilege	1884	winupdate.exe
Token: SeUndockPrivilege	1884	winupdate.exe
Token: SeManageVolumePrivilege	1884	winupdate.exe
Token: SeImpersonatePrivilege	1884	winupdate.exe
Token: SeCreateGlobalPrivilege	1884	winupdate.exe
Token: 33	1884	winupdate.exe
Token: 34	1884	winupdate.exe
Token: 35	1884	winupdate.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
2188	explorer.exe
2784	winupdate.exe
1884	winupdate.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 2376 wrote to memory of 3020	2376	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	29
PID 3020 wrote to memory of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 3020 wrote to memory of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 3020 wrote to memory of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 3020 wrote to memory of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 3020 wrote to memory of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 3020 wrote to memory of 2188	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	30
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 3020 wrote to memory of 2784	3020	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	31
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32
PID 2784 wrote to memory of 1884	2784	winupdate.exe	32

C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - 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:3020
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Drops file in System32 directory
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2188
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      4⤵
      Modifies firewall policy service
      Checks BIOS information in registry
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1884

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

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery