darkcomet | 2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

Modify Existing Service

T1031

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
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 2 IoCs

Processes:

winupdate.exewinupdate.exe

pid process

1264 winupdate.exe
524 winupdate.exe

pid	process
1264	winupdate.exe
524	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:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Loads dropped DLL 8 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exewinupdate.exe

pid	process
1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
1264	winupdate.exe
1264	winupdate.exe
1264	winupdate.exe
1264	winupdate.exe
524	winupdate.exe
524	winupdate.exe
524	winupdate.exe

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

winupdate.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" winupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	pid	process	target process
PID 1048 set thread context of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1264 set thread context of 524	1264	winupdate.exe	winupdate.exe

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

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

Processes:

winupdate.exe2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

description	ioc	process
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	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.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

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid process

524 winupdate.exe

pid	process
524	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSecurityPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeTakeOwnershipPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeLoadDriverPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSystemProfilePrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSystemtimePrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeProfSingleProcessPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeIncBasePriorityPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeCreatePagefilePrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeBackupPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeRestorePrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeShutdownPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeDebugPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSystemEnvironmentPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeChangeNotifyPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeRemoteShutdownPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeUndockPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeManageVolumePrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeImpersonatePrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeCreateGlobalPrivilege	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 33	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 34	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 35	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeIncreaseQuotaPrivilege	524	winupdate.exe
Token: SeSecurityPrivilege	524	winupdate.exe
Token: SeTakeOwnershipPrivilege	524	winupdate.exe
Token: SeLoadDriverPrivilege	524	winupdate.exe
Token: SeSystemProfilePrivilege	524	winupdate.exe
Token: SeSystemtimePrivilege	524	winupdate.exe
Token: SeProfSingleProcessPrivilege	524	winupdate.exe
Token: SeIncBasePriorityPrivilege	524	winupdate.exe
Token: SeCreatePagefilePrivilege	524	winupdate.exe
Token: SeBackupPrivilege	524	winupdate.exe
Token: SeRestorePrivilege	524	winupdate.exe
Token: SeShutdownPrivilege	524	winupdate.exe
Token: SeDebugPrivilege	524	winupdate.exe
Token: SeSystemEnvironmentPrivilege	524	winupdate.exe
Token: SeChangeNotifyPrivilege	524	winupdate.exe
Token: SeRemoteShutdownPrivilege	524	winupdate.exe
Token: SeUndockPrivilege	524	winupdate.exe
Token: SeManageVolumePrivilege	524	winupdate.exe
Token: SeImpersonatePrivilege	524	winupdate.exe
Token: SeCreateGlobalPrivilege	524	winupdate.exe
Token: 33	524	winupdate.exe
Token: 34	524	winupdate.exe
Token: 35	524	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exewinupdate.exe

pid process

1048 2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
1264 winupdate.exe
524 winupdate.exe

pid	process
1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
1264	winupdate.exe
524	winupdate.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	pid	process	target process
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1048 wrote to memory of 1424	1048	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1424 wrote to memory of 1264	1424	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe
PID 1264 wrote to memory of 524	1264	winupdate.exe	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
"C:\Users\Admin\AppData\Local\Temp\2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048

C:\Users\Admin\AppData\Local\Temp\2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
"C:\Users\Admin\AppData\Local\Temp\2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.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:1424

C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1264

C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
4⤵
- Modifies firewall policy service
- Executes dropped EXE
- Checks BIOS information in registry
- Loads dropped DLL
- Windows security modification
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:524

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Disabling Security Tools

T1089

Credential Access

Discovery

Query Registry

System Information Discovery