f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468

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"	INSTAL~1.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"	INSTAL~1.EXE

Executes dropped EXE 3 IoCs

pid	Process
3908	INSTAL~1.EXE
4632	INSTAL~1.exe
756	ZCDVDR~1.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"	INSTAL~1.EXE

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.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"	INSTAL~1.EXE

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3908 set thread context of 4632	3908	INSTAL~1.EXE	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4436	4632	WerFault.exe	84

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3908	INSTAL~1.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 3908	4792	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe	83
PID 4792 wrote to memory of 3908	4792	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe	83
PID 4792 wrote to memory of 3908	4792	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe	83
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 3908 wrote to memory of 4632	3908	INSTAL~1.EXE	84
PID 4792 wrote to memory of 756	4792	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe	85
PID 4792 wrote to memory of 756	4792	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe	85
PID 4792 wrote to memory of 756	4792	f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe	85

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"	INSTAL~1.EXE

C:\Users\Admin\AppData\Local\Temp\f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe
"C:\Users\Admin\AppData\Local\Temp\f27ca685a41abfc2c476fb7280dfab3da69f4a09aa3ec6ac5924f72d08327468.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\INSTAL~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\INSTAL~1.EXE
  2⤵
  - UAC bypass
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3908
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\INSTAL~1.exe
    "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\INSTAL~1.exe"
    3⤵
    - Executes dropped EXE
    PID:4632
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4632 -s 620
      4⤵
      Program crash
      PID:4436
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ZCDVDR~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ZCDVDR~1.EXE
  2⤵
  - Executes dropped EXE
  PID:756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4632 -ip 4632
1⤵
PID:3520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery