darkcomet | 9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165

Processes:

free amongus no virus.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\\msdcsc.exe"	free amongus no virus.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

msdcsc.exe

description ioc process

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

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

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

msdcsc.exe

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

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4648 msdcsc.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

760 attrib.exe
2412 attrib.exe

pid	process
4648	msdcsc.exe

pid	process
760	attrib.exe
2412	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:

free amongus no virus.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	free amongus no virus.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

msdcsc.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

free amongus no virus.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	free amongus no virus.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

free amongus no virus.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	free amongus no virus.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

4648 msdcsc.exe

pid	process
4648	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

free amongus no virus.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2884	free amongus no virus.exe
Token: SeSecurityPrivilege	2884	free amongus no virus.exe
Token: SeTakeOwnershipPrivilege	2884	free amongus no virus.exe
Token: SeLoadDriverPrivilege	2884	free amongus no virus.exe
Token: SeSystemProfilePrivilege	2884	free amongus no virus.exe
Token: SeSystemtimePrivilege	2884	free amongus no virus.exe
Token: SeProfSingleProcessPrivilege	2884	free amongus no virus.exe
Token: SeIncBasePriorityPrivilege	2884	free amongus no virus.exe
Token: SeCreatePagefilePrivilege	2884	free amongus no virus.exe
Token: SeBackupPrivilege	2884	free amongus no virus.exe
Token: SeRestorePrivilege	2884	free amongus no virus.exe
Token: SeShutdownPrivilege	2884	free amongus no virus.exe
Token: SeDebugPrivilege	2884	free amongus no virus.exe
Token: SeSystemEnvironmentPrivilege	2884	free amongus no virus.exe
Token: SeChangeNotifyPrivilege	2884	free amongus no virus.exe
Token: SeRemoteShutdownPrivilege	2884	free amongus no virus.exe
Token: SeUndockPrivilege	2884	free amongus no virus.exe
Token: SeManageVolumePrivilege	2884	free amongus no virus.exe
Token: SeImpersonatePrivilege	2884	free amongus no virus.exe
Token: SeCreateGlobalPrivilege	2884	free amongus no virus.exe
Token: 33	2884	free amongus no virus.exe
Token: 34	2884	free amongus no virus.exe
Token: 35	2884	free amongus no virus.exe
Token: 36	2884	free amongus no virus.exe
Token: SeIncreaseQuotaPrivilege	4648	msdcsc.exe
Token: SeSecurityPrivilege	4648	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4648	msdcsc.exe
Token: SeLoadDriverPrivilege	4648	msdcsc.exe
Token: SeSystemProfilePrivilege	4648	msdcsc.exe
Token: SeSystemtimePrivilege	4648	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4648	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4648	msdcsc.exe
Token: SeCreatePagefilePrivilege	4648	msdcsc.exe
Token: SeBackupPrivilege	4648	msdcsc.exe
Token: SeRestorePrivilege	4648	msdcsc.exe
Token: SeShutdownPrivilege	4648	msdcsc.exe
Token: SeDebugPrivilege	4648	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4648	msdcsc.exe
Token: SeChangeNotifyPrivilege	4648	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4648	msdcsc.exe
Token: SeUndockPrivilege	4648	msdcsc.exe
Token: SeManageVolumePrivilege	4648	msdcsc.exe
Token: SeImpersonatePrivilege	4648	msdcsc.exe
Token: SeCreateGlobalPrivilege	4648	msdcsc.exe
Token: 33	4648	msdcsc.exe
Token: 34	4648	msdcsc.exe
Token: 35	4648	msdcsc.exe
Token: 36	4648	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4648 msdcsc.exe

pid	process
4648	msdcsc.exe

Suspicious use of WriteProcessMemory 59 IoCs

Processes:

free amongus no virus.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 2884 wrote to memory of 4112	2884	free amongus no virus.exe	cmd.exe
PID 2884 wrote to memory of 4112	2884	free amongus no virus.exe	cmd.exe
PID 2884 wrote to memory of 4112	2884	free amongus no virus.exe	cmd.exe
PID 2884 wrote to memory of 432	2884	free amongus no virus.exe	cmd.exe
PID 2884 wrote to memory of 432	2884	free amongus no virus.exe	cmd.exe
PID 2884 wrote to memory of 432	2884	free amongus no virus.exe	cmd.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 2884 wrote to memory of 4776	2884	free amongus no virus.exe	notepad.exe
PID 432 wrote to memory of 760	432	cmd.exe	attrib.exe
PID 432 wrote to memory of 760	432	cmd.exe	attrib.exe
PID 432 wrote to memory of 760	432	cmd.exe	attrib.exe
PID 4112 wrote to memory of 2412	4112	cmd.exe	attrib.exe
PID 4112 wrote to memory of 2412	4112	cmd.exe	attrib.exe
PID 4112 wrote to memory of 2412	4112	cmd.exe	attrib.exe
PID 2884 wrote to memory of 4648	2884	free amongus no virus.exe	msdcsc.exe
PID 2884 wrote to memory of 4648	2884	free amongus no virus.exe	msdcsc.exe
PID 2884 wrote to memory of 4648	2884	free amongus no virus.exe	msdcsc.exe
PID 4648 wrote to memory of 4148	4648	msdcsc.exe	iexplore.exe
PID 4648 wrote to memory of 4148	4648	msdcsc.exe	iexplore.exe
PID 4648 wrote to memory of 4148	4648	msdcsc.exe	iexplore.exe
PID 4648 wrote to memory of 4240	4648	msdcsc.exe	explorer.exe
PID 4648 wrote to memory of 4240	4648	msdcsc.exe	explorer.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe
PID 4648 wrote to memory of 4248	4648	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

Processes:

msdcsc.exe

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

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

760 attrib.exe
2412 attrib.exe

pid	process
760	attrib.exe
2412	attrib.exe

C:\Users\Admin\AppData\Local\Temp\free amongus no virus.exe
"C:\Users\Admin\AppData\Local\Temp\free amongus no virus.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\free amongus no virus.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4112

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\free amongus no virus.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2412

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:432

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:760

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:4776

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4648

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:4148

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:4240

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4248

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