remcos | 76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e

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"	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe = "0"	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3220	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe = "0"	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 452 set thread context of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ilasm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3220	powershell.exe
3220	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
Token: SeDebugPrivilege	3220	powershell.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 3220	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	87
PID 452 wrote to memory of 3220	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	87
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 544	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	88
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2104	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	90
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 2864	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	91
PID 452 wrote to memory of 4988	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	92
PID 452 wrote to memory of 4988	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	92
PID 452 wrote to memory of 4988	452	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe	92

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"	76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
"C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe"
1⤵
- UAC bypass
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:452
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3220
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:544
- C:\Windows\System32\svchost.exe
  "C:\Windows\System32\svchost.exe"
  2⤵
  PID:2104
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  PID:4988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry