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

3080 attrib.exe
3676 attrib.exe

pid	process
3080	attrib.exe
3676	attrib.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exeGekon.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	Gekon.exe

Executes dropped EXE 2 IoCs

Processes:

Gekon.exemsd1csc.exe

pid process

3892 Gekon.exe
3700 msd1csc.exe

pid	process
3892	Gekon.exe
3700	msd1csc.exe

UPX packed file 12 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Gekon.exe	upx
behavioral2/memory/3892-12-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3892-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-79-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-83-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-85-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-87-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-89-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-90-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3700-92-0x0000000000400000-0x00000000004B7000-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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDC1SC\\msd1csc.exe"	Gekon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\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
Modifies registry class 1 IoCs

Processes:

Gekon.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Gekon.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msd1csc.exe

pid process

3700 msd1csc.exe

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

pid	process
3700	msd1csc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

Gekon.exemsd1csc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3892	Gekon.exe
Token: SeSecurityPrivilege	3892	Gekon.exe
Token: SeTakeOwnershipPrivilege	3892	Gekon.exe
Token: SeLoadDriverPrivilege	3892	Gekon.exe
Token: SeSystemProfilePrivilege	3892	Gekon.exe
Token: SeSystemtimePrivilege	3892	Gekon.exe
Token: SeProfSingleProcessPrivilege	3892	Gekon.exe
Token: SeIncBasePriorityPrivilege	3892	Gekon.exe
Token: SeCreatePagefilePrivilege	3892	Gekon.exe
Token: SeBackupPrivilege	3892	Gekon.exe
Token: SeRestorePrivilege	3892	Gekon.exe
Token: SeShutdownPrivilege	3892	Gekon.exe
Token: SeDebugPrivilege	3892	Gekon.exe
Token: SeSystemEnvironmentPrivilege	3892	Gekon.exe
Token: SeChangeNotifyPrivilege	3892	Gekon.exe
Token: SeRemoteShutdownPrivilege	3892	Gekon.exe
Token: SeUndockPrivilege	3892	Gekon.exe
Token: SeManageVolumePrivilege	3892	Gekon.exe
Token: SeImpersonatePrivilege	3892	Gekon.exe
Token: SeCreateGlobalPrivilege	3892	Gekon.exe
Token: 33	3892	Gekon.exe
Token: 34	3892	Gekon.exe
Token: 35	3892	Gekon.exe
Token: 36	3892	Gekon.exe
Token: SeIncreaseQuotaPrivilege	3700	msd1csc.exe
Token: SeSecurityPrivilege	3700	msd1csc.exe
Token: SeTakeOwnershipPrivilege	3700	msd1csc.exe
Token: SeLoadDriverPrivilege	3700	msd1csc.exe
Token: SeSystemProfilePrivilege	3700	msd1csc.exe
Token: SeSystemtimePrivilege	3700	msd1csc.exe
Token: SeProfSingleProcessPrivilege	3700	msd1csc.exe
Token: SeIncBasePriorityPrivilege	3700	msd1csc.exe
Token: SeCreatePagefilePrivilege	3700	msd1csc.exe
Token: SeBackupPrivilege	3700	msd1csc.exe
Token: SeRestorePrivilege	3700	msd1csc.exe
Token: SeShutdownPrivilege	3700	msd1csc.exe
Token: SeDebugPrivilege	3700	msd1csc.exe
Token: SeSystemEnvironmentPrivilege	3700	msd1csc.exe
Token: SeChangeNotifyPrivilege	3700	msd1csc.exe
Token: SeRemoteShutdownPrivilege	3700	msd1csc.exe
Token: SeUndockPrivilege	3700	msd1csc.exe
Token: SeManageVolumePrivilege	3700	msd1csc.exe
Token: SeImpersonatePrivilege	3700	msd1csc.exe
Token: SeCreateGlobalPrivilege	3700	msd1csc.exe
Token: 33	3700	msd1csc.exe
Token: 34	3700	msd1csc.exe
Token: 35	3700	msd1csc.exe
Token: 36	3700	msd1csc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msd1csc.exe

pid process

3700 msd1csc.exe

pid	process
3700	msd1csc.exe

Suspicious use of WriteProcessMemory 57 IoCs

Processes:

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

description	pid	process	target process
PID 4600 wrote to memory of 3892	4600	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 4600 wrote to memory of 3892	4600	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 4600 wrote to memory of 3892	4600	60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe	Gekon.exe
PID 3892 wrote to memory of 4580	3892	Gekon.exe	cmd.exe
PID 3892 wrote to memory of 4580	3892	Gekon.exe	cmd.exe
PID 3892 wrote to memory of 4580	3892	Gekon.exe	cmd.exe
PID 3892 wrote to memory of 908	3892	Gekon.exe	cmd.exe
PID 3892 wrote to memory of 908	3892	Gekon.exe	cmd.exe
PID 3892 wrote to memory of 908	3892	Gekon.exe	cmd.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 3892 wrote to memory of 2312	3892	Gekon.exe	notepad.exe
PID 4580 wrote to memory of 3080	4580	cmd.exe	attrib.exe
PID 4580 wrote to memory of 3080	4580	cmd.exe	attrib.exe
PID 4580 wrote to memory of 3080	4580	cmd.exe	attrib.exe
PID 908 wrote to memory of 3676	908	cmd.exe	attrib.exe
PID 908 wrote to memory of 3676	908	cmd.exe	attrib.exe
PID 908 wrote to memory of 3676	908	cmd.exe	attrib.exe
PID 3892 wrote to memory of 3700	3892	Gekon.exe	msd1csc.exe
PID 3892 wrote to memory of 3700	3892	Gekon.exe	msd1csc.exe
PID 3892 wrote to memory of 3700	3892	Gekon.exe	msd1csc.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	msd1csc.exe	notepad.exe
PID 3700 wrote to memory of 620	3700	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\Explorern	msd1csc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msd1csc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msd1csc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3080 attrib.exe
3676 attrib.exe

pid	process
3080	attrib.exe
3676	attrib.exe

C:\Users\Admin\AppData\Local\Temp\60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\60a23c51894524a344bfecab6532dc7f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4600

C:\Users\Admin\AppData\Roaming\Gekon.exe
"C:\Users\Admin\AppData\Roaming\Gekon.exe"
2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3892

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:4580

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:3080

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:908

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Roaming" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3676

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2312

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:3700

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:620

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Modify Registry

7

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Query Registry

T1012

System Information Discovery