darkcomet | 6a95367b492ae4c76fcba7778a7f5bd6a4161840eb44f7f57ac895e2c73f835b

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\driver\\winupdate.exe"	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

winupdate.exe

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

winupdate.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "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

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.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

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

winupdate.exewinupdate.exe

pid	Process
4036	winupdate.exe
1140	winupdate.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

winupdate.exe

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

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\driver\\winupdate.exe"	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

Drops file in System32 directory 1 IoCs

Processes:

explorer.exe

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exewinupdate.exe

description	pid	Process	procid_target
PID 3652 set thread context of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3048 set thread context of 4808	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	94
PID 4036 set thread context of 1140	4036	winupdate.exe	98

UPX packed file 30 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3048-4-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-5-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-6-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-8-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-9-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-11-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-10-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3048-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-76-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-81-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1140-83-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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

Processes:

winupdate.exe45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.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

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	45a7e70ef28d9d8504c5bd72ba13f3be_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

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

winupdate.exe45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

Modifies registry class 1 IoCs

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeSecurityPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeBackupPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeRestorePrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeShutdownPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeDebugPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeUndockPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: 33	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: 34	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: 35	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: 36	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1140	winupdate.exe
Token: SeSecurityPrivilege	1140	winupdate.exe
Token: SeTakeOwnershipPrivilege	1140	winupdate.exe
Token: SeLoadDriverPrivilege	1140	winupdate.exe
Token: SeSystemProfilePrivilege	1140	winupdate.exe
Token: SeSystemtimePrivilege	1140	winupdate.exe
Token: SeProfSingleProcessPrivilege	1140	winupdate.exe
Token: SeIncBasePriorityPrivilege	1140	winupdate.exe
Token: SeCreatePagefilePrivilege	1140	winupdate.exe
Token: SeBackupPrivilege	1140	winupdate.exe
Token: SeRestorePrivilege	1140	winupdate.exe
Token: SeShutdownPrivilege	1140	winupdate.exe
Token: SeDebugPrivilege	1140	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1140	winupdate.exe
Token: SeChangeNotifyPrivilege	1140	winupdate.exe
Token: SeRemoteShutdownPrivilege	1140	winupdate.exe
Token: SeUndockPrivilege	1140	winupdate.exe
Token: SeManageVolumePrivilege	1140	winupdate.exe
Token: SeImpersonatePrivilege	1140	winupdate.exe
Token: SeCreateGlobalPrivilege	1140	winupdate.exe
Token: 33	1140	winupdate.exe
Token: 34	1140	winupdate.exe
Token: 35	1140	winupdate.exe
Token: 36	1140	winupdate.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exeexplorer.exewinupdate.exewinupdate.exe

pid	Process
3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
4808	explorer.exe
4036	winupdate.exe
1140	winupdate.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exewinupdate.exe

description	pid	Process	procid_target
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3652 wrote to memory of 3048	3652	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	85
PID 3048 wrote to memory of 4808	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	94
PID 3048 wrote to memory of 4808	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	94
PID 3048 wrote to memory of 4808	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	94
PID 3048 wrote to memory of 4808	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	94
PID 3048 wrote to memory of 4808	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	94
PID 3048 wrote to memory of 4036	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	97
PID 3048 wrote to memory of 4036	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	97
PID 3048 wrote to memory of 4036	3048	45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe	97
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98
PID 4036 wrote to memory of 1140	4036	winupdate.exe	98

C:\Users\Admin\AppData\Local\Temp\45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\45a7e70ef28d9d8504c5bd72ba13f3be_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - 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
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4808
- - C:\driver\winupdate.exe
    "C:\driver\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4036
  - - C:\driver\winupdate.exe
      "C:\driver\winupdate.exe"
      4⤵
      Modifies firewall policy 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 use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1140

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

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery