darkcomet | aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de

Processes:

aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\Vevo.exe"	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

Vevo.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" Vevo.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	Vevo.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

Vevo.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Vevo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Vevo.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

Vevo.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	Vevo.exe

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

Processes:

aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

Executes dropped EXE 1 IoCs

Processes:

Vevo.exe

pid process

1452 Vevo.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1100 attrib.exe
4220 attrib.exe

pid	process
1452	Vevo.exe

pid	process
1100	attrib.exe
4220	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

Processes:

aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

Vevo.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Vevo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Vevo.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroU = "C:\\Users\\Admin\\Documents\\MSDCSC\\Vevo.exe"	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exeVevo.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeSecurityPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeTakeOwnershipPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeLoadDriverPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeSystemProfilePrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeSystemtimePrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeProfSingleProcessPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeIncBasePriorityPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeCreatePagefilePrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeBackupPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeRestorePrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeShutdownPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeDebugPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeSystemEnvironmentPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeChangeNotifyPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeRemoteShutdownPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeUndockPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeManageVolumePrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeImpersonatePrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeCreateGlobalPrivilege	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: 33	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: 34	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: 35	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: 36	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
Token: SeIncreaseQuotaPrivilege	1452	Vevo.exe
Token: SeSecurityPrivilege	1452	Vevo.exe
Token: SeTakeOwnershipPrivilege	1452	Vevo.exe
Token: SeLoadDriverPrivilege	1452	Vevo.exe
Token: SeSystemProfilePrivilege	1452	Vevo.exe
Token: SeSystemtimePrivilege	1452	Vevo.exe
Token: SeProfSingleProcessPrivilege	1452	Vevo.exe
Token: SeIncBasePriorityPrivilege	1452	Vevo.exe
Token: SeCreatePagefilePrivilege	1452	Vevo.exe
Token: SeBackupPrivilege	1452	Vevo.exe
Token: SeRestorePrivilege	1452	Vevo.exe
Token: SeShutdownPrivilege	1452	Vevo.exe
Token: SeDebugPrivilege	1452	Vevo.exe
Token: SeSystemEnvironmentPrivilege	1452	Vevo.exe
Token: SeChangeNotifyPrivilege	1452	Vevo.exe
Token: SeRemoteShutdownPrivilege	1452	Vevo.exe
Token: SeUndockPrivilege	1452	Vevo.exe
Token: SeManageVolumePrivilege	1452	Vevo.exe
Token: SeImpersonatePrivilege	1452	Vevo.exe
Token: SeCreateGlobalPrivilege	1452	Vevo.exe
Token: 33	1452	Vevo.exe
Token: 34	1452	Vevo.exe
Token: 35	1452	Vevo.exe
Token: 36	1452	Vevo.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Vevo.exe

pid process

1452 Vevo.exe

pid	process
1452	Vevo.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.execmd.execmd.exeVevo.exe

description	pid	process	target process
PID 4812 wrote to memory of 4188	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	cmd.exe
PID 4812 wrote to memory of 4188	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	cmd.exe
PID 4812 wrote to memory of 4188	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	cmd.exe
PID 4812 wrote to memory of 1060	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	cmd.exe
PID 4812 wrote to memory of 1060	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	cmd.exe
PID 4812 wrote to memory of 1060	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	cmd.exe
PID 4188 wrote to memory of 4220	4188	cmd.exe	attrib.exe
PID 4188 wrote to memory of 4220	4188	cmd.exe	attrib.exe
PID 4188 wrote to memory of 4220	4188	cmd.exe	attrib.exe
PID 1060 wrote to memory of 1100	1060	cmd.exe	attrib.exe
PID 1060 wrote to memory of 1100	1060	cmd.exe	attrib.exe
PID 1060 wrote to memory of 1100	1060	cmd.exe	attrib.exe
PID 4812 wrote to memory of 1452	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	Vevo.exe
PID 4812 wrote to memory of 1452	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	Vevo.exe
PID 4812 wrote to memory of 1452	4812	aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe	Vevo.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe
PID 1452 wrote to memory of 1444	1452	Vevo.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

Processes:

Vevo.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	Vevo.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	Vevo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	Vevo.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4220 attrib.exe
1100 attrib.exe

pid	process
4220	attrib.exe
1100	attrib.exe

C:\Users\Admin\AppData\Local\Temp\aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe
"C:\Users\Admin\AppData\Local\Temp\aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4812

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4188

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\aaaa4c64f72af2fc920b47e4bc325049b0555ea8b54c870e9082b96f34d535de.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4220

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1060

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1100

C:\Users\Admin\Documents\MSDCSC\Vevo.exe
"C:\Users\Admin\Documents\MSDCSC\Vevo.exe"
2⤵
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1452

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1444

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Modify Existing Service

T1031

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

6

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery