asyncrat | da3cd4af82e24034b117f49451a61726c5f3845645be52578105d58c36b67eae

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"	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe = "0"	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.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
3884	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.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	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe = "0"	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe

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"	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4620 set thread context of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84

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	jsc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3884	powershell.exe
3884	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3884	powershell.exe
Token: SeDebugPrivilege	2924	jsc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4620 wrote to memory of 3884	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	82
PID 4620 wrote to memory of 3884	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	82
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 2924	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	84
PID 4620 wrote to memory of 1640	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	85
PID 4620 wrote to memory of 1640	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe	85
PID 4620 wrote to memory of 1640	4620	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.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"	adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe

C:\Users\Admin\AppData\Local\Temp\adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe
"C:\Users\Admin\AppData\Local\Temp\adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.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:4620
- 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\adc6b85fbb55624cdd9a25d9634f08d3991ac60dce86c8f3ed520a88e36371fe.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3884
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
  2⤵
  PID:1640

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