darkcomet | 8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170

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"	tr4.exe

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

description	ioc	Process
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	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "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

Blocks application from running via registry modification 5 IoCs

Adds application to list of disallowed applications.

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun\10 = "iexplore.exe"	srchostexe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun\11 = "msnmsgr.exe"	srchostexe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun\12 = "msconfig.exe"	srchostexe.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun = "1"	srchostexe.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun	srchostexe.exe

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	srchostexe.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 5 IoCs

pid	Process
2348	mfpmp.exe
2536	keylogger4.exe
1712	srchostexe.exe
2748	tr4.exe
2964	msdcsc.exe

Loads dropped DLL 4 IoCs

pid	Process
1712	srchostexe.exe
1712	srchostexe.exe
2748	tr4.exe
2748	tr4.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	tr4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\srchostexe.exe"	keylogger4.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 6 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keylogger4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mfpmp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	srchostexe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tr4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1712	srchostexe.exe
1712	srchostexe.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2964	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	srchostexe.exe
Token: SeIncreaseQuotaPrivilege	2748	tr4.exe
Token: SeSecurityPrivilege	2748	tr4.exe
Token: SeTakeOwnershipPrivilege	2748	tr4.exe
Token: SeLoadDriverPrivilege	2748	tr4.exe
Token: SeSystemProfilePrivilege	2748	tr4.exe
Token: SeSystemtimePrivilege	2748	tr4.exe
Token: SeProfSingleProcessPrivilege	2748	tr4.exe
Token: SeIncBasePriorityPrivilege	2748	tr4.exe
Token: SeCreatePagefilePrivilege	2748	tr4.exe
Token: SeBackupPrivilege	2748	tr4.exe
Token: SeRestorePrivilege	2748	tr4.exe
Token: SeShutdownPrivilege	2748	tr4.exe
Token: SeDebugPrivilege	2748	tr4.exe
Token: SeSystemEnvironmentPrivilege	2748	tr4.exe
Token: SeChangeNotifyPrivilege	2748	tr4.exe
Token: SeRemoteShutdownPrivilege	2748	tr4.exe
Token: SeUndockPrivilege	2748	tr4.exe
Token: SeManageVolumePrivilege	2748	tr4.exe
Token: SeImpersonatePrivilege	2748	tr4.exe
Token: SeCreateGlobalPrivilege	2748	tr4.exe
Token: 33	2748	tr4.exe
Token: 34	2748	tr4.exe
Token: 35	2748	tr4.exe
Token: SeIncreaseQuotaPrivilege	2964	msdcsc.exe
Token: SeSecurityPrivilege	2964	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2964	msdcsc.exe
Token: SeLoadDriverPrivilege	2964	msdcsc.exe
Token: SeSystemProfilePrivilege	2964	msdcsc.exe
Token: SeSystemtimePrivilege	2964	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2964	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2964	msdcsc.exe
Token: SeCreatePagefilePrivilege	2964	msdcsc.exe
Token: SeBackupPrivilege	2964	msdcsc.exe
Token: SeRestorePrivilege	2964	msdcsc.exe
Token: SeShutdownPrivilege	2964	msdcsc.exe
Token: SeDebugPrivilege	2964	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2964	msdcsc.exe
Token: SeChangeNotifyPrivilege	2964	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2964	msdcsc.exe
Token: SeUndockPrivilege	2964	msdcsc.exe
Token: SeManageVolumePrivilege	2964	msdcsc.exe
Token: SeImpersonatePrivilege	2964	msdcsc.exe
Token: SeCreateGlobalPrivilege	2964	msdcsc.exe
Token: 33	2964	msdcsc.exe
Token: 34	2964	msdcsc.exe
Token: 35	2964	msdcsc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2536	keylogger4.exe
1712	srchostexe.exe
2964	msdcsc.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2348	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	30
PID 2396 wrote to memory of 2348	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	30
PID 2396 wrote to memory of 2348	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	30
PID 2396 wrote to memory of 2348	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	30
PID 2396 wrote to memory of 2536	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	31
PID 2396 wrote to memory of 2536	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	31
PID 2396 wrote to memory of 2536	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	31
PID 2396 wrote to memory of 2536	2396	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	31
PID 2536 wrote to memory of 1712	2536	keylogger4.exe	32
PID 2536 wrote to memory of 1712	2536	keylogger4.exe	32
PID 2536 wrote to memory of 1712	2536	keylogger4.exe	32
PID 2536 wrote to memory of 1712	2536	keylogger4.exe	32
PID 1712 wrote to memory of 2748	1712	srchostexe.exe	33
PID 1712 wrote to memory of 2748	1712	srchostexe.exe	33
PID 1712 wrote to memory of 2748	1712	srchostexe.exe	33
PID 1712 wrote to memory of 2748	1712	srchostexe.exe	33
PID 2748 wrote to memory of 2964	2748	tr4.exe	34
PID 2748 wrote to memory of 2964	2748	tr4.exe	34
PID 2748 wrote to memory of 2964	2748	tr4.exe	34
PID 2748 wrote to memory of 2964	2748	tr4.exe	34
PID 2964 wrote to memory of 2652	2964	msdcsc.exe	35
PID 2964 wrote to memory of 2652	2964	msdcsc.exe	35
PID 2964 wrote to memory of 2652	2964	msdcsc.exe	35
PID 2964 wrote to memory of 2652	2964	msdcsc.exe	35
PID 2964 wrote to memory of 2796	2964	msdcsc.exe	36
PID 2964 wrote to memory of 2796	2964	msdcsc.exe	36
PID 2964 wrote to memory of 2796	2964	msdcsc.exe	36
PID 2964 wrote to memory of 2796	2964	msdcsc.exe	36
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37
PID 2964 wrote to memory of 2596	2964	msdcsc.exe	37

C:\Users\Admin\AppData\Local\Temp\8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe
"C:\Users\Admin\AppData\Local\Temp\8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Local\Temp\mfpmp.exe
  "C:\Users\Admin\AppData\Local\Temp\mfpmp.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Users\Admin\AppData\Local\Temp\keylogger4.exe
  "C:\Users\Admin\AppData\Local\Temp\keylogger4.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\srchostexe.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\srchostexe.exe" ONCE
    3⤵
    - Blocks application from running via registry modification
    - Disables RegEdit via registry modification
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1712
  - - C:\Users\Admin\AppData\Local\Temp\tr4.exe
      "C:\Users\Admin\AppData\Local\Temp\tr4.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2748
    - - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        5⤵
        Modifies firewall policy service
        Modifies security service
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2964
      - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        6⤵
        
        PID:2652
      - C:\Windows\explorer.exe
        
        "C:\Windows\explorer.exe"
        6⤵
        
        PID:2796
      - C:\Windows\SysWOW64\notepad.exe
        
        notepad
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2596

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

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry