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

4016 winupdate.exe
204 winupdate.exe

pid	process
4016	winupdate.exe
204	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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\International\Geo\Nation	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\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 2232 set thread context of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 4016 set thread context of 204	4016	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:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	ioc	process
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
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

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

Modifies registry class 1 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid process

204 winupdate.exe

pid	process
204	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSecurityPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeTakeOwnershipPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeLoadDriverPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSystemProfilePrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSystemtimePrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeProfSingleProcessPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeIncBasePriorityPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeCreatePagefilePrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeBackupPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeRestorePrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeShutdownPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeDebugPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeSystemEnvironmentPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeChangeNotifyPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeRemoteShutdownPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeUndockPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeManageVolumePrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeImpersonatePrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeCreateGlobalPrivilege	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 33	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 34	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 35	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: 36	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
Token: SeIncreaseQuotaPrivilege	204	winupdate.exe
Token: SeSecurityPrivilege	204	winupdate.exe
Token: SeTakeOwnershipPrivilege	204	winupdate.exe
Token: SeLoadDriverPrivilege	204	winupdate.exe
Token: SeSystemProfilePrivilege	204	winupdate.exe
Token: SeSystemtimePrivilege	204	winupdate.exe
Token: SeProfSingleProcessPrivilege	204	winupdate.exe
Token: SeIncBasePriorityPrivilege	204	winupdate.exe
Token: SeCreatePagefilePrivilege	204	winupdate.exe
Token: SeBackupPrivilege	204	winupdate.exe
Token: SeRestorePrivilege	204	winupdate.exe
Token: SeShutdownPrivilege	204	winupdate.exe
Token: SeDebugPrivilege	204	winupdate.exe
Token: SeSystemEnvironmentPrivilege	204	winupdate.exe
Token: SeChangeNotifyPrivilege	204	winupdate.exe
Token: SeRemoteShutdownPrivilege	204	winupdate.exe
Token: SeUndockPrivilege	204	winupdate.exe
Token: SeManageVolumePrivilege	204	winupdate.exe
Token: SeImpersonatePrivilege	204	winupdate.exe
Token: SeCreateGlobalPrivilege	204	winupdate.exe
Token: 33	204	winupdate.exe
Token: 34	204	winupdate.exe
Token: 35	204	winupdate.exe
Token: 36	204	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exewinupdate.exe

pid process

2232 2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
4016 winupdate.exe
204 winupdate.exe

pid	process
2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
4016	winupdate.exe
204	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exewinupdate.exe

description	pid	process	target process
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 2232 wrote to memory of 1760	2232	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe
PID 1760 wrote to memory of 4016	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1760 wrote to memory of 4016	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 1760 wrote to memory of 4016	1760	2e09bd5656c7d02caf8ebad3663412abbf24570f91c5884156ba57d428a61df6.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	winupdate.exe	winupdate.exe
PID 4016 wrote to memory of 204	4016	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:2232

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
- Checks computer location settings
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760

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:4016

C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
4⤵
- Modifies firewall policy service
- Executes dropped EXE
- Checks BIOS information in registry
- 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:204

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

5

Disabling Security Tools

2

T1089

Credential Access

Discovery

Query Registry

4

System Information Discovery

5