darkcomet | e3a4af22b0ede7f828047006daea93264dbe240d4d7f6c64152a33610142f988

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	winupdate.exe
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 = "0"	winupdate.exe

Modifies security service 2 TTPs 1 IoCs

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 1 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

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

Hidden Files and Directories

T1564.001

pid	Process
1824	attrib.exe
2724	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3080	winupdate.exe
5016	winupdate.exe

UPX packed file 29 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4144-3-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/4144-2-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/4144-4-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/4144-5-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/4144-6-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/4144-10-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/4144-68-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-76-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-75-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-80-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-79-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-78-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-77-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-81-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-82-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-83-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-84-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-85-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-86-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-87-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-88-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-89-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-90-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-91-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-92-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-93-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-94-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-95-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/5016-96-0x0000000000400000-0x00000000004B9000-memory.dmp	upx

Windows security modification 2 TTPs 1 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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	winupdate.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 3080 set thread context of 5016	3080	winupdate.exe	102

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3940	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5016	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeSecurityPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeBackupPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeRestorePrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeShutdownPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeDebugPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeUndockPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: 33	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: 34	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: 35	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: 36	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5016	winupdate.exe
Token: SeSecurityPrivilege	5016	winupdate.exe
Token: SeTakeOwnershipPrivilege	5016	winupdate.exe
Token: SeLoadDriverPrivilege	5016	winupdate.exe
Token: SeSystemProfilePrivilege	5016	winupdate.exe
Token: SeSystemtimePrivilege	5016	winupdate.exe
Token: SeProfSingleProcessPrivilege	5016	winupdate.exe
Token: SeIncBasePriorityPrivilege	5016	winupdate.exe
Token: SeCreatePagefilePrivilege	5016	winupdate.exe
Token: SeBackupPrivilege	5016	winupdate.exe
Token: SeRestorePrivilege	5016	winupdate.exe
Token: SeShutdownPrivilege	5016	winupdate.exe
Token: SeDebugPrivilege	5016	winupdate.exe
Token: SeSystemEnvironmentPrivilege	5016	winupdate.exe
Token: SeChangeNotifyPrivilege	5016	winupdate.exe
Token: SeRemoteShutdownPrivilege	5016	winupdate.exe
Token: SeUndockPrivilege	5016	winupdate.exe
Token: SeManageVolumePrivilege	5016	winupdate.exe
Token: SeImpersonatePrivilege	5016	winupdate.exe
Token: SeCreateGlobalPrivilege	5016	winupdate.exe
Token: 33	5016	winupdate.exe
Token: 34	5016	winupdate.exe
Token: 35	5016	winupdate.exe
Token: 36	5016	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
3080	winupdate.exe
5016	winupdate.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 2876 wrote to memory of 4144	2876	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	92
PID 4144 wrote to memory of 2028	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	93
PID 4144 wrote to memory of 2028	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	93
PID 4144 wrote to memory of 2028	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	93
PID 4144 wrote to memory of 876	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	95
PID 4144 wrote to memory of 876	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	95
PID 4144 wrote to memory of 876	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	95
PID 876 wrote to memory of 1824	876	cmd.exe	97
PID 876 wrote to memory of 1824	876	cmd.exe	97
PID 876 wrote to memory of 1824	876	cmd.exe	97
PID 2028 wrote to memory of 2724	2028	cmd.exe	98
PID 2028 wrote to memory of 2724	2028	cmd.exe	98
PID 2028 wrote to memory of 2724	2028	cmd.exe	98
PID 4144 wrote to memory of 3080	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	99
PID 4144 wrote to memory of 3080	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	99
PID 4144 wrote to memory of 3080	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	99
PID 4144 wrote to memory of 428	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	100
PID 4144 wrote to memory of 428	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	100
PID 4144 wrote to memory of 428	4144	18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe	100
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 3080 wrote to memory of 5016	3080	winupdate.exe	102
PID 428 wrote to memory of 3940	428	cmd.exe	104
PID 428 wrote to memory of 3940	428	cmd.exe	104
PID 428 wrote to memory of 3940	428	cmd.exe	104

Views/modifies file attributes 1 TTPs 2 IoCs

Hidden Files and Directories

T1564.001

pid	Process
1824	attrib.exe
2724	attrib.exe

C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:2724
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:876
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:1824
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3080
  - - C:\Windupdt\winupdate.exe
      C:\Windupdt\winupdate.exe
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Executes dropped EXE
      Windows security modification
      Adds Run key to start application
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:5016
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\18737b20ca2a0bcf0232b95229848466_JaffaCakes118.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:428
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      Runs ping.exe
      PID:3940

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4204,i,1305347165619645738,15927664461101562802,262144 --variations-seed-version --mojo-platform-channel-handle=4608 /prefetch:8
1⤵
PID:2904

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry