darkcomet | eb461db439d16a2ae7cfa01ed20c51d77d8940b26c953a1507bad1c7b5759e5d

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"	SyStEm.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 1 IoCs

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

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

Hidden Files and Directories

T1564.001

pid	Process
1644	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	SyStEm.exe

Executes dropped EXE 2 IoCs

pid	Process
2192	SyStEm.exe
4924	msdcsc.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3304-0-0x0000000000400000-0x00000000004C1000-memory.dmp	upx
behavioral2/memory/3304-90-0x0000000000400000-0x00000000004C1000-memory.dmp	upx
behavioral2/memory/3304-94-0x0000000000400000-0x00000000004C1000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

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

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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	SyStEm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\n:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\u:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\y:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\z:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\b:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\k:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\q:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\s:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\t:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\x:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\h:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\i:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\m:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\r:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\w:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\v:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\a:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\g:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\j:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\l:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\o:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened (read-only)	\??\p:	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3304-90-0x0000000000400000-0x00000000004C1000-memory.dmp	autoit_exe
behavioral2/memory/3304-94-0x0000000000400000-0x00000000004C1000-memory.dmp	autoit_exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\JY.exe	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File created	C:\Windows\InJeCtoR.exe	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened for modification	C:\Windows\InJeCtoR.exe	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File created	C:\Windows\J_Y.rar	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File opened for modification	C:\Windows\J_Y.rar	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
File created	C:\Windows\JY.exe	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.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	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SyStEm.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4952	cmd.exe
2756	PING.EXE

Modifies registry class 1 IoCs

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2756	PING.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2192	SyStEm.exe
Token: SeSecurityPrivilege	2192	SyStEm.exe
Token: SeTakeOwnershipPrivilege	2192	SyStEm.exe
Token: SeLoadDriverPrivilege	2192	SyStEm.exe
Token: SeSystemProfilePrivilege	2192	SyStEm.exe
Token: SeSystemtimePrivilege	2192	SyStEm.exe
Token: SeProfSingleProcessPrivilege	2192	SyStEm.exe
Token: SeIncBasePriorityPrivilege	2192	SyStEm.exe
Token: SeCreatePagefilePrivilege	2192	SyStEm.exe
Token: SeBackupPrivilege	2192	SyStEm.exe
Token: SeRestorePrivilege	2192	SyStEm.exe
Token: SeShutdownPrivilege	2192	SyStEm.exe
Token: SeDebugPrivilege	2192	SyStEm.exe
Token: SeSystemEnvironmentPrivilege	2192	SyStEm.exe
Token: SeChangeNotifyPrivilege	2192	SyStEm.exe
Token: SeRemoteShutdownPrivilege	2192	SyStEm.exe
Token: SeUndockPrivilege	2192	SyStEm.exe
Token: SeManageVolumePrivilege	2192	SyStEm.exe
Token: SeImpersonatePrivilege	2192	SyStEm.exe
Token: SeCreateGlobalPrivilege	2192	SyStEm.exe
Token: 33	2192	SyStEm.exe
Token: 34	2192	SyStEm.exe
Token: 35	2192	SyStEm.exe
Token: 36	2192	SyStEm.exe
Token: SeIncreaseQuotaPrivilege	4924	msdcsc.exe
Token: SeSecurityPrivilege	4924	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4924	msdcsc.exe
Token: SeLoadDriverPrivilege	4924	msdcsc.exe
Token: SeSystemProfilePrivilege	4924	msdcsc.exe
Token: SeSystemtimePrivilege	4924	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4924	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4924	msdcsc.exe
Token: SeCreatePagefilePrivilege	4924	msdcsc.exe
Token: SeBackupPrivilege	4924	msdcsc.exe
Token: SeRestorePrivilege	4924	msdcsc.exe
Token: SeShutdownPrivilege	4924	msdcsc.exe
Token: SeDebugPrivilege	4924	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4924	msdcsc.exe
Token: SeChangeNotifyPrivilege	4924	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4924	msdcsc.exe
Token: SeUndockPrivilege	4924	msdcsc.exe
Token: SeManageVolumePrivilege	4924	msdcsc.exe
Token: SeImpersonatePrivilege	4924	msdcsc.exe
Token: SeCreateGlobalPrivilege	4924	msdcsc.exe
Token: 33	4924	msdcsc.exe
Token: 34	4924	msdcsc.exe
Token: 35	4924	msdcsc.exe
Token: 36	4924	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4924	msdcsc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 2192	3304	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe	85
PID 3304 wrote to memory of 2192	3304	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe	85
PID 3304 wrote to memory of 2192	3304	8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe	85
PID 2192 wrote to memory of 2084	2192	SyStEm.exe	86
PID 2192 wrote to memory of 2084	2192	SyStEm.exe	86
PID 2192 wrote to memory of 2084	2192	SyStEm.exe	86
PID 2192 wrote to memory of 4952	2192	SyStEm.exe	88
PID 2192 wrote to memory of 4952	2192	SyStEm.exe	88
PID 2192 wrote to memory of 4952	2192	SyStEm.exe	88
PID 2084 wrote to memory of 1644	2084	cmd.exe	90
PID 2084 wrote to memory of 1644	2084	cmd.exe	90
PID 2084 wrote to memory of 1644	2084	cmd.exe	90
PID 4952 wrote to memory of 2756	4952	cmd.exe	91
PID 4952 wrote to memory of 2756	4952	cmd.exe	91
PID 4952 wrote to memory of 2756	4952	cmd.exe	91
PID 2192 wrote to memory of 4924	2192	SyStEm.exe	92
PID 2192 wrote to memory of 4924	2192	SyStEm.exe	92
PID 2192 wrote to memory of 4924	2192	SyStEm.exe	92
PID 4924 wrote to memory of 3588	4924	msdcsc.exe	93
PID 4924 wrote to memory of 3588	4924	msdcsc.exe	93
PID 4924 wrote to memory of 3588	4924	msdcsc.exe	93
PID 4924 wrote to memory of 3680	4924	msdcsc.exe	94
PID 4924 wrote to memory of 3680	4924	msdcsc.exe	94

Views/modifies file attributes 1 TTPs 1 IoCs

Hidden Files and Directories

T1564.001

pid	Process
1644	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8852b7e7445dc84329714a34e95aa2dd_JaffaCakes118.exe"
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Users\Admin\AppData\Local\Temp\SyStEm.exe
  C:\Users\Admin\AppData\Local\Temp\SyStEm.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2084
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1644
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\SyStEm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:4952
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 4
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2756
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Modifies firewall policy service
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4924
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      PID:3588
  - - C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      4⤵
      PID:3680

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
1⤵
PID:4036

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
1⤵
PID:1424

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