dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	serveur.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	serveur.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\serveur.exe = "C:\\Users\\Admin\\AppData\\Roaming\\serveur.exe:*:Enabled:serveur"	serveur.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	serveur.exe

UAC bypass 3 TTPs 1 IoCs

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	serveur.exe

Windows security bypass 2 TTPs 1 IoCs

Disabling Security Tools

T1089

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	serveur.exe

Executes dropped EXE 1 IoCs

pid	Process
4352	serveur.exe

Windows security modification 2 TTPs 1 IoCs

Disabling Security Tools

T1089

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	serveur.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Security Center = "C:\\Users\\Admin\\AppData\\Roaming\\serveur.exe"	serveur.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	serveur.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	serveur.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	serveur.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Log.txt	serveur.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeBackupPrivilege	4352	serveur.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1812	dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409.exe
4352	serveur.exe
4352	serveur.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 4352	1812	dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409.exe	81
PID 1812 wrote to memory of 4352	1812	dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409.exe	81
PID 1812 wrote to memory of 4352	1812	dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409.exe	81

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	serveur.exe

C:\Users\Admin\AppData\Local\Temp\dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409.exe
"C:\Users\Admin\AppData\Local\Temp\dd2dc1dbe04444a96e4d90158e08e5c0c4dc167bcca0395cfac0022b9ecab409.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Roaming\serveur.exe
  2⤵
  - Modifies firewall policy service
  - UAC bypass
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Maps connected drives based on registry
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:4352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control