darkcomet | 79130903a33761ddf302398d93a7162454afc1d93608f1925fd483675516baf4

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windupdt\\winupdate.exe"	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe

Modifies firewall policy service 3 TTPs 3 IoCs

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

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

defense_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

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	winupdate.exe

Disables Task Manager via registry modification
defense_evasion

Downloads MZ/PE file 1 IoCs

flow	pid	Process
45	740	Process not Found

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	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe

Executes dropped EXE 1 IoCs

pid	Process
3728	winupdate.exe

Windows security modification 2 TTPs 2 IoCs

defense_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-1-5-21-194335498-2604837297-537231065-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windupdt\\winupdate.exe"	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.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 3 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	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
552	MicrosoftEdgeUpdate.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	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.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	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3728	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeSecurityPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeTakeOwnershipPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeLoadDriverPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeSystemProfilePrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeSystemtimePrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeProfSingleProcessPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeIncBasePriorityPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeCreatePagefilePrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeBackupPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeRestorePrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeShutdownPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeDebugPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeSystemEnvironmentPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeChangeNotifyPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeRemoteShutdownPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeUndockPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeManageVolumePrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeImpersonatePrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeCreateGlobalPrivilege	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: 33	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: 34	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: 35	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: 36	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
Token: SeIncreaseQuotaPrivilege	3728	winupdate.exe
Token: SeSecurityPrivilege	3728	winupdate.exe
Token: SeTakeOwnershipPrivilege	3728	winupdate.exe
Token: SeLoadDriverPrivilege	3728	winupdate.exe
Token: SeSystemProfilePrivilege	3728	winupdate.exe
Token: SeSystemtimePrivilege	3728	winupdate.exe
Token: SeProfSingleProcessPrivilege	3728	winupdate.exe
Token: SeIncBasePriorityPrivilege	3728	winupdate.exe
Token: SeCreatePagefilePrivilege	3728	winupdate.exe
Token: SeBackupPrivilege	3728	winupdate.exe
Token: SeRestorePrivilege	3728	winupdate.exe
Token: SeShutdownPrivilege	3728	winupdate.exe
Token: SeDebugPrivilege	3728	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3728	winupdate.exe
Token: SeChangeNotifyPrivilege	3728	winupdate.exe
Token: SeRemoteShutdownPrivilege	3728	winupdate.exe
Token: SeUndockPrivilege	3728	winupdate.exe
Token: SeManageVolumePrivilege	3728	winupdate.exe
Token: SeImpersonatePrivilege	3728	winupdate.exe
Token: SeCreateGlobalPrivilege	3728	winupdate.exe
Token: 33	3728	winupdate.exe
Token: 34	3728	winupdate.exe
Token: 35	3728	winupdate.exe
Token: 36	3728	winupdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3520 wrote to memory of 3728	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe	89
PID 3520 wrote to memory of 3728	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe	89
PID 3520 wrote to memory of 3728	3520	JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe	89

System policy modification 1 TTPs 3 IoCs

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\JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bd468b0f3db58b23c362ad549a4dc896.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- 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:3520
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - 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
  - System policy modification
  PID:3728

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7NzI4RUY0QTItQ0ZCRi00NTgzLTlGNEEtMjlEQkQ3QjY5NjI3fSIgdXNlcmlkPSJ7QjEwNjEyMDItN0VDNS00RTU4LTg4QkUtMjQxRURERDg3Q0JFfSIgaW5zdGFsbHNvdXJjZT0ibGltaXRlZCIgcmVxdWVzdGlkPSJ7RjExNzFERTMtRUY3My00ODUwLUFERjctNzMwQkQ2NjhBQjMzfSIgZGVkdXA9ImNyIiBkb21haW5qb2luZWQ9IjAiPjxodyBsb2dpY2FsX2NwdXM9IjIiIHBoeXNtZW1vcnk9IjQiIGRpc2tfdHlwZT0iMiIgc3NlPSIxIiBzc2UyPSIxIiBzc2UzPSIxIiBzc3NlMz0iMSIgc3NlNDE9IjEiIHNzZTQyPSIxIiBhdng9IjEiLz48b3MgcGxhdGZvcm09IndpbiIgdmVyc2lvbj0iMTAuMC4xOTA0MS4xMjg4IiBzcD0iIiBhcmNoPSJ4NjQiIHByb2R1Y3RfdHlwZT0iNDgiIGlzX3dpcD0iMCIgaXNfaW5fbG9ja2Rvd25fbW9kZT0iMCIvPjxvZW0gcHJvZHVjdF9tYW51ZmFjdHVyZXI9IiIgcHJvZHVjdF9uYW1lPSIiLz48ZXhwIGV0YWc9IiZxdW90O0UreGJBejZZNnNVMTI4OWJTNnFsNFZSTGJramZCVUdUTUpzanJIcjQ0aUk9JnF1b3Q7Ii8-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDcxNzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTY4MDM3MTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTY0Nzc1MjQyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:552

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