sheetrat | 1518d06c127ab15a628c2f9760dec4b726b3531757b5d689692e2b8292c6f37f

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	Test.exe

Modifies Windows Defender TamperProtection settings 3 TTPs 1 IoCs

evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features\TamperProtection = "0"	Test.exe

UAC bypass 3 TTPs 4 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

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

Executes dropped EXE 1 IoCs

pid	Process
3184	Process not Found

Windows security modification 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features\TamperProtection = "0"	Test.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

defense_evasion trojan

System Information Discovery

T1082

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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	ip-api.com

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe
2528	Test.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	Test.exe
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found
Token: SeShutdownPrivilege	3184	Process not Found
Token: SeCreatePagefilePrivilege	3184	Process not Found

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 4148	2528	Test.exe	83

System policy modification 1 TTPs 6 IoCs

defense_evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Test.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	Test.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Test.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0"	Test.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "1"	Test.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Test.exe

C:\Users\Admin\AppData\Local\Temp\Test.exe
"C:\Users\Admin\AppData\Local\Temp\Test.exe"
1⤵
- Modifies Windows Defender DisableAntiSpyware settings
- Modifies Windows Defender TamperProtection settings
- UAC bypass
- Windows security modification
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2528
- C:\Windows\SYSTEM32\mountvol.exe
  "mountvol" E: /S
  2⤵
  PID:4148

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

4

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery