redline | c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271

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"	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.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	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe = "0"	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.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
2580	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.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	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe = "0"	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2260 set thread context of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87

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	regsvcs.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2580	powershell.exe
2580	powershell.exe
540	regsvcs.exe
540	regsvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	540	regsvcs.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2580	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	86
PID 2260 wrote to memory of 2580	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	86
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87
PID 2260 wrote to memory of 540	2260	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe	87

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"	c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe

C:\Users\Admin\AppData\Local\Temp\c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe
"C:\Users\Admin\AppData\Local\Temp\c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.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 WriteProcessMemory
- System policy modification
PID:2260
- 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\c40ba863d18db199355861f3ef34652fb467b1d311d0370b6c035fd9bc27b271.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2580
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:540

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