darkcomet | c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede

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"	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

description	ioc	Process
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

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

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

Windows security bypass 2 TTPs 2 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

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

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
defense_evasion

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

Hidden Files and Directories

T1564.001

pid	Process
4232	attrib.exe
4148	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe

Executes dropped EXE 1 IoCs

pid	Process
4760	msdcsc.exe

Windows security modification 2 TTPs 2 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4760	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeSecurityPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeTakeOwnershipPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeLoadDriverPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeSystemProfilePrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeSystemtimePrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeProfSingleProcessPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeIncBasePriorityPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeCreatePagefilePrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeBackupPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeRestorePrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeShutdownPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeDebugPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeSystemEnvironmentPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeChangeNotifyPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeRemoteShutdownPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeUndockPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeManageVolumePrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeImpersonatePrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeCreateGlobalPrivilege	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: 33	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: 34	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: 35	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: 36	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
Token: SeIncreaseQuotaPrivilege	4760	msdcsc.exe
Token: SeSecurityPrivilege	4760	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4760	msdcsc.exe
Token: SeLoadDriverPrivilege	4760	msdcsc.exe
Token: SeSystemProfilePrivilege	4760	msdcsc.exe
Token: SeSystemtimePrivilege	4760	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4760	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4760	msdcsc.exe
Token: SeCreatePagefilePrivilege	4760	msdcsc.exe
Token: SeBackupPrivilege	4760	msdcsc.exe
Token: SeRestorePrivilege	4760	msdcsc.exe
Token: SeShutdownPrivilege	4760	msdcsc.exe
Token: SeDebugPrivilege	4760	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4760	msdcsc.exe
Token: SeChangeNotifyPrivilege	4760	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4760	msdcsc.exe
Token: SeUndockPrivilege	4760	msdcsc.exe
Token: SeManageVolumePrivilege	4760	msdcsc.exe
Token: SeImpersonatePrivilege	4760	msdcsc.exe
Token: SeCreateGlobalPrivilege	4760	msdcsc.exe
Token: 33	4760	msdcsc.exe
Token: 34	4760	msdcsc.exe
Token: 35	4760	msdcsc.exe
Token: 36	4760	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4760	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 2076	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	86
PID 1588 wrote to memory of 2076	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	86
PID 1588 wrote to memory of 2076	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	86
PID 1588 wrote to memory of 3580	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	88
PID 1588 wrote to memory of 3580	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	88
PID 1588 wrote to memory of 3580	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	88
PID 2076 wrote to memory of 4232	2076	cmd.exe	90
PID 2076 wrote to memory of 4232	2076	cmd.exe	90
PID 2076 wrote to memory of 4232	2076	cmd.exe	90
PID 3580 wrote to memory of 4148	3580	cmd.exe	91
PID 3580 wrote to memory of 4148	3580	cmd.exe	91
PID 3580 wrote to memory of 4148	3580	cmd.exe	91
PID 1588 wrote to memory of 4760	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	92
PID 1588 wrote to memory of 4760	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	92
PID 1588 wrote to memory of 4760	1588	c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe	92
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93
PID 4760 wrote to memory of 2300	4760	msdcsc.exe	93

System policy modification 1 TTPs 3 IoCs

Modify Registry

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs

Hidden Files and Directories

T1564.001

pid	Process
4232	attrib.exe
4148	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe
C:\Users\Admin\AppData\Local\Temp\c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe dsrm -subtree -noprompt -c user"http://+:443"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\c879c4891a1eba5c4f3a1bf38e3ed8d530ce67721cab3b26547ff50190b55ede.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3580
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4148
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:4760
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry