darkcomet | 57ea796132c2aaab208d837a2405013f5aff35f7808db136032540ca5af6388f

Processes:

Gekon.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDC1SC\\msd1csc.exe"	Gekon.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

Processes:

msd1csc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msd1csc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msd1csc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msd1csc.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Windows Service
T1543.003

Processes:

msd1csc.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" msd1csc.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	msd1csc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

msd1csc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msd1csc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msd1csc.exe

Disables Task Manager via registry modification
evasion
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

880 attrib.exe
2368 attrib.exe
Executes dropped EXE 2 IoCs

Processes:

Gekon.exemsd1csc.exe

pid process

2504 Gekon.exe
1852 msd1csc.exe

pid	process
880	attrib.exe
2368	attrib.exe

pid	process
2504	Gekon.exe
1852	msd1csc.exe

Loads dropped DLL 7 IoCs

Processes:

60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exeGekon.exe

pid	process
2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
2504	Gekon.exe
2504	Gekon.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\Gekon.exe	upx
behavioral1/memory/2504-20-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1852-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2504-106-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1852-110-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

msd1csc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msd1csc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msd1csc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

Processes:

Gekon.exemsd1csc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDC1SC\\msd1csc.exe"	Gekon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDC1SC\\msd1csc.exe"	msd1csc.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msd1csc.exe

pid process

1852 msd1csc.exe

pid	process
1852	msd1csc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

Gekon.exemsd1csc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2504	Gekon.exe
Token: SeSecurityPrivilege	2504	Gekon.exe
Token: SeTakeOwnershipPrivilege	2504	Gekon.exe
Token: SeLoadDriverPrivilege	2504	Gekon.exe
Token: SeSystemProfilePrivilege	2504	Gekon.exe
Token: SeSystemtimePrivilege	2504	Gekon.exe
Token: SeProfSingleProcessPrivilege	2504	Gekon.exe
Token: SeIncBasePriorityPrivilege	2504	Gekon.exe
Token: SeCreatePagefilePrivilege	2504	Gekon.exe
Token: SeBackupPrivilege	2504	Gekon.exe
Token: SeRestorePrivilege	2504	Gekon.exe
Token: SeShutdownPrivilege	2504	Gekon.exe
Token: SeDebugPrivilege	2504	Gekon.exe
Token: SeSystemEnvironmentPrivilege	2504	Gekon.exe
Token: SeChangeNotifyPrivilege	2504	Gekon.exe
Token: SeRemoteShutdownPrivilege	2504	Gekon.exe
Token: SeUndockPrivilege	2504	Gekon.exe
Token: SeManageVolumePrivilege	2504	Gekon.exe
Token: SeImpersonatePrivilege	2504	Gekon.exe
Token: SeCreateGlobalPrivilege	2504	Gekon.exe
Token: 33	2504	Gekon.exe
Token: 34	2504	Gekon.exe
Token: 35	2504	Gekon.exe
Token: SeIncreaseQuotaPrivilege	1852	msd1csc.exe
Token: SeSecurityPrivilege	1852	msd1csc.exe
Token: SeTakeOwnershipPrivilege	1852	msd1csc.exe
Token: SeLoadDriverPrivilege	1852	msd1csc.exe
Token: SeSystemProfilePrivilege	1852	msd1csc.exe
Token: SeSystemtimePrivilege	1852	msd1csc.exe
Token: SeProfSingleProcessPrivilege	1852	msd1csc.exe
Token: SeIncBasePriorityPrivilege	1852	msd1csc.exe
Token: SeCreatePagefilePrivilege	1852	msd1csc.exe
Token: SeBackupPrivilege	1852	msd1csc.exe
Token: SeRestorePrivilege	1852	msd1csc.exe
Token: SeShutdownPrivilege	1852	msd1csc.exe
Token: SeDebugPrivilege	1852	msd1csc.exe
Token: SeSystemEnvironmentPrivilege	1852	msd1csc.exe
Token: SeChangeNotifyPrivilege	1852	msd1csc.exe
Token: SeRemoteShutdownPrivilege	1852	msd1csc.exe
Token: SeUndockPrivilege	1852	msd1csc.exe
Token: SeManageVolumePrivilege	1852	msd1csc.exe
Token: SeImpersonatePrivilege	1852	msd1csc.exe
Token: SeCreateGlobalPrivilege	1852	msd1csc.exe
Token: 33	1852	msd1csc.exe
Token: 34	1852	msd1csc.exe
Token: 35	1852	msd1csc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msd1csc.exe

pid process

1852 msd1csc.exe

pid	process
1852	msd1csc.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exeGekon.execmd.execmd.exemsd1csc.exe

description	pid	process	target process
PID 2244 wrote to memory of 2504	2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 2244 wrote to memory of 2504	2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 2244 wrote to memory of 2504	2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 2244 wrote to memory of 2504	2244	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 2504 wrote to memory of 1992	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 1992	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 1992	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 1992	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 2408	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 2408	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 2408	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 2408	2504	Gekon.exe	cmd.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 2504 wrote to memory of 2460	2504	Gekon.exe	notepad.exe
PID 1992 wrote to memory of 880	1992	cmd.exe	attrib.exe
PID 1992 wrote to memory of 880	1992	cmd.exe	attrib.exe
PID 1992 wrote to memory of 880	1992	cmd.exe	attrib.exe
PID 1992 wrote to memory of 880	1992	cmd.exe	attrib.exe
PID 2408 wrote to memory of 2368	2408	cmd.exe	attrib.exe
PID 2408 wrote to memory of 2368	2408	cmd.exe	attrib.exe
PID 2408 wrote to memory of 2368	2408	cmd.exe	attrib.exe
PID 2408 wrote to memory of 2368	2408	cmd.exe	attrib.exe
PID 2504 wrote to memory of 1852	2504	Gekon.exe	msd1csc.exe
PID 2504 wrote to memory of 1852	2504	Gekon.exe	msd1csc.exe
PID 2504 wrote to memory of 1852	2504	Gekon.exe	msd1csc.exe
PID 2504 wrote to memory of 1852	2504	Gekon.exe	msd1csc.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe
PID 1852 wrote to memory of 1844	1852	msd1csc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

Processes:

msd1csc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msd1csc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msd1csc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msd1csc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

880 attrib.exe
2368 attrib.exe

pid	process
880	attrib.exe
2368	attrib.exe

C:\Users\Admin\AppData\Local\Temp\60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Roaming\Gekon.exe
  "C:\Users\Admin\AppData\Roaming\Gekon.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\Gekon.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1992
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Roaming\Gekon.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:880
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2408
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Roaming" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:2368
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2460
- - C:\Users\Admin\AppData\Local\Temp\MSDC1SC\msd1csc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDC1SC\msd1csc.exe"
    3⤵
    - Modifies firewall policy service
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - Adds Run key to start application
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    - System policy modification
    PID:1852
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:1844

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

T1543.003

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

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery