darkcomet | 95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f

Processes:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.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"	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.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

1760 winupdate.exe
2008 winupdate.exe

pid	process
1760	winupdate.exe
2008	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:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Loads dropped DLL 8 IoCs

Processes:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exewinupdate.exe

pid	process
1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
1760	winupdate.exe
1760	winupdate.exe
1760	winupdate.exe
1760	winupdate.exe
2008	winupdate.exe
2008	winupdate.exe
2008	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:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exe

description	pid	process	target process
PID 1684 set thread context of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1760 set thread context of 2008	1760	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:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.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	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

winupdate.exe95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid process

2008 winupdate.exe

pid	process
2008	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeSecurityPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeTakeOwnershipPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeLoadDriverPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeSystemProfilePrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeSystemtimePrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeProfSingleProcessPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeIncBasePriorityPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeCreatePagefilePrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeBackupPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeRestorePrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeShutdownPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeDebugPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeSystemEnvironmentPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeChangeNotifyPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeRemoteShutdownPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeUndockPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeManageVolumePrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeImpersonatePrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeCreateGlobalPrivilege	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: 33	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: 34	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: 35	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
Token: SeIncreaseQuotaPrivilege	2008	winupdate.exe
Token: SeSecurityPrivilege	2008	winupdate.exe
Token: SeTakeOwnershipPrivilege	2008	winupdate.exe
Token: SeLoadDriverPrivilege	2008	winupdate.exe
Token: SeSystemProfilePrivilege	2008	winupdate.exe
Token: SeSystemtimePrivilege	2008	winupdate.exe
Token: SeProfSingleProcessPrivilege	2008	winupdate.exe
Token: SeIncBasePriorityPrivilege	2008	winupdate.exe
Token: SeCreatePagefilePrivilege	2008	winupdate.exe
Token: SeBackupPrivilege	2008	winupdate.exe
Token: SeRestorePrivilege	2008	winupdate.exe
Token: SeShutdownPrivilege	2008	winupdate.exe
Token: SeDebugPrivilege	2008	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2008	winupdate.exe
Token: SeChangeNotifyPrivilege	2008	winupdate.exe
Token: SeRemoteShutdownPrivilege	2008	winupdate.exe
Token: SeUndockPrivilege	2008	winupdate.exe
Token: SeManageVolumePrivilege	2008	winupdate.exe
Token: SeImpersonatePrivilege	2008	winupdate.exe
Token: SeCreateGlobalPrivilege	2008	winupdate.exe
Token: 33	2008	winupdate.exe
Token: 34	2008	winupdate.exe
Token: 35	2008	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exewinupdate.exe

pid process

1684 95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
1760 winupdate.exe
2008 winupdate.exe

pid	process
1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
1760	winupdate.exe
2008	winupdate.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exewinupdate.exe

description	pid	process	target process
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1684 wrote to memory of 1416	1684	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1416 wrote to memory of 1760	1416	95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe
PID 1760 wrote to memory of 2008	1760	winupdate.exe	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
"C:\Users\Admin\AppData\Local\Temp\95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1684

C:\Users\Admin\AppData\Local\Temp\95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.exe
"C:\Users\Admin\AppData\Local\Temp\95c0d030c5f53d1133be30a35abdf0627f1cc15ce6b769d1565c656db44d289f.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:1416

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:1760

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:2008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery