darkcomet | 65dfe1cfe57a4548bdb2c2c5c8008f4630bd8e8528569fb3d50214fe4e9dcc71

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Desktop\\Windupdt\\winupdate.exe"	111a0e25005a8f8ceb917a602717446e_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	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 1 IoCs

evasion

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

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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2536	winupdate.exe
2188	winupdate.exe

Loads dropped DLL 8 IoCs

pid	Process
2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
2536	winupdate.exe
2536	winupdate.exe
2536	winupdate.exe
2536	winupdate.exe
2188	winupdate.exe
2188	winupdate.exe
2188	winupdate.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2496-63-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2496-62-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2496-67-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2496-68-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2496-70-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2496-65-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2496-83-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2188-144-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral1/memory/2188-156-0x0000000000400000-0x00000000004C5000-memory.dmp	upx

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-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\Desktop\\Windupdt\\winupdate.exe"	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2936 set thread context of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2536 set thread context of 2188	2536	winupdate.exe	32

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 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\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	111a0e25005a8f8ceb917a602717446e_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

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	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSecurityPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeBackupPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeRestorePrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeShutdownPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeDebugPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeUndockPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 33	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 34	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 35	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeDebugPrivilege	2536	winupdate.exe
Token: SeIncreaseQuotaPrivilege	2188	winupdate.exe
Token: SeSecurityPrivilege	2188	winupdate.exe
Token: SeTakeOwnershipPrivilege	2188	winupdate.exe
Token: SeLoadDriverPrivilege	2188	winupdate.exe
Token: SeSystemProfilePrivilege	2188	winupdate.exe
Token: SeSystemtimePrivilege	2188	winupdate.exe
Token: SeProfSingleProcessPrivilege	2188	winupdate.exe
Token: SeIncBasePriorityPrivilege	2188	winupdate.exe
Token: SeCreatePagefilePrivilege	2188	winupdate.exe
Token: SeBackupPrivilege	2188	winupdate.exe
Token: SeRestorePrivilege	2188	winupdate.exe
Token: SeShutdownPrivilege	2188	winupdate.exe
Token: SeDebugPrivilege	2188	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2188	winupdate.exe
Token: SeChangeNotifyPrivilege	2188	winupdate.exe
Token: SeRemoteShutdownPrivilege	2188	winupdate.exe
Token: SeUndockPrivilege	2188	winupdate.exe
Token: SeManageVolumePrivilege	2188	winupdate.exe
Token: SeImpersonatePrivilege	2188	winupdate.exe
Token: SeCreateGlobalPrivilege	2188	winupdate.exe
Token: 33	2188	winupdate.exe
Token: 34	2188	winupdate.exe
Token: 35	2188	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2188	winupdate.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2936 wrote to memory of 2496	2936	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	28
PID 2496 wrote to memory of 2692	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2692	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2692	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2692	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2536	2496	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	31
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32
PID 2536 wrote to memory of 2188	2536	winupdate.exe	32

System policy modification 1 TTPs 3 IoCs

evasion

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\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Adds Run key to start application
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:2692
- - C:\Users\Admin\Desktop\Windupdt\winupdate.exe
    "C:\Users\Admin\Desktop\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2536
  - - C:\Users\Admin\Desktop\Windupdt\winupdate.exe
      "C:\Users\Admin\Desktop\Windupdt\winupdate.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Checks BIOS information in registry
      Executes dropped EXE
      Loads dropped DLL
      Windows security modification
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      System policy modification
      PID:2188

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