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 6 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"	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

Windows Service

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

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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun\11 = "msnmsgr.exe"	srchostexe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun\12 = "msconfig.exe"	srchostexe.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun = "1"	srchostexe.exe
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun	srchostexe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun\10 = "iexplore.exe"	srchostexe.exe

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	srchostexe.exe

Disables Task Manager via registry modification
evasion

Checks computer location settings 2 TTPs 4 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	keylogger4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	srchostexe.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	tr4.exe

Executes dropped EXE 5 IoCs

pid	Process
1176	mfpmp.exe
4752	keylogger4.exe
1912	srchostexe.exe
2308	tr4.exe
2604	msdcsc.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\srchostexe.exe"	keylogger4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	tr4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 1920	2604	msdcsc.exe	90

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	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mfpmp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keylogger4.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
1912	srchostexe.exe
1912	srchostexe.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1920	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1912	srchostexe.exe
Token: SeIncreaseQuotaPrivilege	2308	tr4.exe
Token: SeSecurityPrivilege	2308	tr4.exe
Token: SeTakeOwnershipPrivilege	2308	tr4.exe
Token: SeLoadDriverPrivilege	2308	tr4.exe
Token: SeSystemProfilePrivilege	2308	tr4.exe
Token: SeSystemtimePrivilege	2308	tr4.exe
Token: SeProfSingleProcessPrivilege	2308	tr4.exe
Token: SeIncBasePriorityPrivilege	2308	tr4.exe
Token: SeCreatePagefilePrivilege	2308	tr4.exe
Token: SeBackupPrivilege	2308	tr4.exe
Token: SeRestorePrivilege	2308	tr4.exe
Token: SeShutdownPrivilege	2308	tr4.exe
Token: SeDebugPrivilege	2308	tr4.exe
Token: SeSystemEnvironmentPrivilege	2308	tr4.exe
Token: SeChangeNotifyPrivilege	2308	tr4.exe
Token: SeRemoteShutdownPrivilege	2308	tr4.exe
Token: SeUndockPrivilege	2308	tr4.exe
Token: SeManageVolumePrivilege	2308	tr4.exe
Token: SeImpersonatePrivilege	2308	tr4.exe
Token: SeCreateGlobalPrivilege	2308	tr4.exe
Token: 33	2308	tr4.exe
Token: 34	2308	tr4.exe
Token: 35	2308	tr4.exe
Token: 36	2308	tr4.exe
Token: SeIncreaseQuotaPrivilege	2604	msdcsc.exe
Token: SeSecurityPrivilege	2604	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2604	msdcsc.exe
Token: SeLoadDriverPrivilege	2604	msdcsc.exe
Token: SeSystemProfilePrivilege	2604	msdcsc.exe
Token: SeSystemtimePrivilege	2604	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2604	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2604	msdcsc.exe
Token: SeCreatePagefilePrivilege	2604	msdcsc.exe
Token: SeBackupPrivilege	2604	msdcsc.exe
Token: SeRestorePrivilege	2604	msdcsc.exe
Token: SeShutdownPrivilege	2604	msdcsc.exe
Token: SeDebugPrivilege	2604	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2604	msdcsc.exe
Token: SeChangeNotifyPrivilege	2604	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2604	msdcsc.exe
Token: SeUndockPrivilege	2604	msdcsc.exe
Token: SeManageVolumePrivilege	2604	msdcsc.exe
Token: SeImpersonatePrivilege	2604	msdcsc.exe
Token: SeCreateGlobalPrivilege	2604	msdcsc.exe
Token: 33	2604	msdcsc.exe
Token: 34	2604	msdcsc.exe
Token: 35	2604	msdcsc.exe
Token: 36	2604	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1920	iexplore.exe
Token: SeSecurityPrivilege	1920	iexplore.exe
Token: SeTakeOwnershipPrivilege	1920	iexplore.exe
Token: SeLoadDriverPrivilege	1920	iexplore.exe
Token: SeSystemProfilePrivilege	1920	iexplore.exe
Token: SeSystemtimePrivilege	1920	iexplore.exe
Token: SeProfSingleProcessPrivilege	1920	iexplore.exe
Token: SeIncBasePriorityPrivilege	1920	iexplore.exe
Token: SeCreatePagefilePrivilege	1920	iexplore.exe
Token: SeBackupPrivilege	1920	iexplore.exe
Token: SeRestorePrivilege	1920	iexplore.exe
Token: SeShutdownPrivilege	1920	iexplore.exe
Token: SeDebugPrivilege	1920	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1920	iexplore.exe
Token: SeChangeNotifyPrivilege	1920	iexplore.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4752	keylogger4.exe
1912	srchostexe.exe
1920	iexplore.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 1176	3176	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	85
PID 3176 wrote to memory of 1176	3176	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	85
PID 3176 wrote to memory of 1176	3176	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	85
PID 3176 wrote to memory of 4752	3176	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	86
PID 3176 wrote to memory of 4752	3176	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	86
PID 3176 wrote to memory of 4752	3176	8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe	86
PID 4752 wrote to memory of 1912	4752	keylogger4.exe	87
PID 4752 wrote to memory of 1912	4752	keylogger4.exe	87
PID 4752 wrote to memory of 1912	4752	keylogger4.exe	87
PID 1912 wrote to memory of 2308	1912	srchostexe.exe	88
PID 1912 wrote to memory of 2308	1912	srchostexe.exe	88
PID 1912 wrote to memory of 2308	1912	srchostexe.exe	88
PID 2308 wrote to memory of 2604	2308	tr4.exe	89
PID 2308 wrote to memory of 2604	2308	tr4.exe	89
PID 2308 wrote to memory of 2604	2308	tr4.exe	89
PID 2604 wrote to memory of 1920	2604	msdcsc.exe	90
PID 2604 wrote to memory of 1920	2604	msdcsc.exe	90
PID 2604 wrote to memory of 1920	2604	msdcsc.exe	90
PID 2604 wrote to memory of 1920	2604	msdcsc.exe	90
PID 2604 wrote to memory of 1920	2604	msdcsc.exe	90
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91
PID 1920 wrote to memory of 2272	1920	iexplore.exe	91

C:\Users\Admin\AppData\Local\Temp\8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe
"C:\Users\Admin\AppData\Local\Temp\8d73ac73eba45b1db3a844ab6422a62cde5df9b50b8341a8b1f1890306df8170N.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3176
- 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:1176
- C:\Users\Admin\AppData\Local\Temp\keylogger4.exe
  "C:\Users\Admin\AppData\Local\Temp\keylogger4.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4752
- - 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
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1912
  - - C:\Users\Admin\AppData\Local\Temp\tr4.exe
      "C:\Users\Admin\AppData\Local\Temp\tr4.exe"
      4⤵
      Modifies WinLogon for persistence
      Checks computer location settings
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2308
    - - 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
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2604
      - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        6⤵
        Modifies firewall policy service
        Modifies security service
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1920
        
        C:\Windows\SysWOW64\notepad.exe
        
        notepad
        7⤵
        System Location Discovery: System Language Discovery
        
        PID:2272

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