darkcomet | ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.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"	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe

Modifies firewall policy service 2 TTPs 6 IoCs

Modify Registry

Modify Existing Service

T1031

Processes:

iexplore.exemsdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	iexplore.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	iexplore.exe

Modifies security service 2 TTPs 2 IoCs

Modify Registry

Modify Existing Service

T1031

Processes:

msdcsc.exeiexplore.exe

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

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

msdcsc.exeiexplore.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"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 2 IoCs

Processes:

msdcsc.exeiexplore.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	iexplore.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1376 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

1648 attrib.exe
1536 attrib.exe

pid	process
1376	msdcsc.exe

pid	process
1648	attrib.exe
1536	attrib.exe

Loads dropped DLL 2 IoCs

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe

pid	process
1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.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\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1376 set thread context of 696 1376 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

696 iexplore.exe

description	pid	process	target process
PID 1376 set thread context of 696	1376	msdcsc.exe	iexplore.exe

pid	process
696	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSecurityPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeTakeOwnershipPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeLoadDriverPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSystemProfilePrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSystemtimePrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeProfSingleProcessPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeIncBasePriorityPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeCreatePagefilePrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeBackupPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeRestorePrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeShutdownPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeDebugPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSystemEnvironmentPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeChangeNotifyPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeRemoteShutdownPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeUndockPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeManageVolumePrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeImpersonatePrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeCreateGlobalPrivilege	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 33	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 34	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 35	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeIncreaseQuotaPrivilege	1376	msdcsc.exe
Token: SeSecurityPrivilege	1376	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1376	msdcsc.exe
Token: SeLoadDriverPrivilege	1376	msdcsc.exe
Token: SeSystemProfilePrivilege	1376	msdcsc.exe
Token: SeSystemtimePrivilege	1376	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1376	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1376	msdcsc.exe
Token: SeCreatePagefilePrivilege	1376	msdcsc.exe
Token: SeBackupPrivilege	1376	msdcsc.exe
Token: SeRestorePrivilege	1376	msdcsc.exe
Token: SeShutdownPrivilege	1376	msdcsc.exe
Token: SeDebugPrivilege	1376	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1376	msdcsc.exe
Token: SeChangeNotifyPrivilege	1376	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1376	msdcsc.exe
Token: SeUndockPrivilege	1376	msdcsc.exe
Token: SeManageVolumePrivilege	1376	msdcsc.exe
Token: SeImpersonatePrivilege	1376	msdcsc.exe
Token: SeCreateGlobalPrivilege	1376	msdcsc.exe
Token: 33	1376	msdcsc.exe
Token: 34	1376	msdcsc.exe
Token: 35	1376	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	696	iexplore.exe
Token: SeSecurityPrivilege	696	iexplore.exe
Token: SeTakeOwnershipPrivilege	696	iexplore.exe
Token: SeLoadDriverPrivilege	696	iexplore.exe
Token: SeSystemProfilePrivilege	696	iexplore.exe
Token: SeSystemtimePrivilege	696	iexplore.exe
Token: SeProfSingleProcessPrivilege	696	iexplore.exe
Token: SeIncBasePriorityPrivilege	696	iexplore.exe
Token: SeCreatePagefilePrivilege	696	iexplore.exe
Token: SeBackupPrivilege	696	iexplore.exe
Token: SeRestorePrivilege	696	iexplore.exe
Token: SeShutdownPrivilege	696	iexplore.exe
Token: SeDebugPrivilege	696	iexplore.exe
Token: SeSystemEnvironmentPrivilege	696	iexplore.exe
Token: SeChangeNotifyPrivilege	696	iexplore.exe
Token: SeRemoteShutdownPrivilege	696	iexplore.exe
Token: SeUndockPrivilege	696	iexplore.exe
Token: SeManageVolumePrivilege	696	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

696 iexplore.exe

pid	process
696	iexplore.exe

Suspicious use of WriteProcessMemory 49 IoCs

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 1752 wrote to memory of 952	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 952	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 952	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 952	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 1600	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 1600	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 1600	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1752 wrote to memory of 1600	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1600 wrote to memory of 1536	1600	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1536	1600	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1536	1600	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1536	1600	cmd.exe	attrib.exe
PID 952 wrote to memory of 1648	952	cmd.exe	attrib.exe
PID 952 wrote to memory of 1648	952	cmd.exe	attrib.exe
PID 952 wrote to memory of 1648	952	cmd.exe	attrib.exe
PID 952 wrote to memory of 1648	952	cmd.exe	attrib.exe
PID 1752 wrote to memory of 1376	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 1752 wrote to memory of 1376	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 1752 wrote to memory of 1376	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 1752 wrote to memory of 1376	1752	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 1376 wrote to memory of 696	1376	msdcsc.exe	iexplore.exe
PID 1376 wrote to memory of 696	1376	msdcsc.exe	iexplore.exe
PID 1376 wrote to memory of 696	1376	msdcsc.exe	iexplore.exe
PID 1376 wrote to memory of 696	1376	msdcsc.exe	iexplore.exe
PID 1376 wrote to memory of 696	1376	msdcsc.exe	iexplore.exe
PID 1376 wrote to memory of 696	1376	msdcsc.exe	iexplore.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe
PID 696 wrote to memory of 1812	696	iexplore.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

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

1536 attrib.exe
1648 attrib.exe

pid	process
1536	attrib.exe
1648	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
"C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:952

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1648

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:1600

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1536

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1376

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:696

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

T1031

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

7

Disabling Security Tools

T1089

Hidden Files and Directories