554498d567510eb22da861a223f8a38edfe7891d0ea4f0ccc8f89a0a0aeea194

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "0"	powershell.exe

Modifies Windows Defender notification settings 3 TTPs 3 IoCs

defense_evasion trojan

Windows Service

Modify Registry

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications\DisableEnhancedNotifications = "1"	powershell.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications	powershell.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications\DisableNotifications = "1"	powershell.exe

UAC bypass 3 TTPs 1 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\ConsentPromptBehaviorAdmin = "0"	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1788976790-1541110888-1636651838-1000\Control Panel\International\Geo\Nation	sO7owIyUKFh5z.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1788976790-1541110888-1636651838-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
1628	UnRAR.exe
4612	Yjzlxkdoi.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\WindowsOptions	sO7owIyUKFh5z.exe
File created	C:\Program Files\WindowsOptions\__tmp_rar_sfx_access_check_240659187	sO7owIyUKFh5z.exe
File opened for modification	C:\Program Files\WindowsOptions\install.vbs	sO7owIyUKFh5z.exe
File created	C:\Program Files\WindowsOptions\run.ps1	sO7owIyUKFh5z.exe
File created	C:\Program Files\WindowsOptions\sfx.rar	sO7owIyUKFh5z.exe
File created	C:\Program Files\WindowsOptions\Yjzlxkdoi.exe	UnRAR.exe
File created	C:\Program Files\WindowsOptions\install.vbs	sO7owIyUKFh5z.exe
File opened for modification	C:\Program Files\WindowsOptions\run.ps1	sO7owIyUKFh5z.exe
File created	C:\Program Files\WindowsOptions\UnRAR.exe	sO7owIyUKFh5z.exe
File opened for modification	C:\Program Files\WindowsOptions\UnRAR.exe	sO7owIyUKFh5z.exe
File opened for modification	C:\Program Files\WindowsOptions\sfx.rar	sO7owIyUKFh5z.exe
File opened for modification	C:\Program Files\WindowsOptions\Yjzlxkdoi.exe	UnRAR.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4376	powershell.exe

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	Yjzlxkdoi.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1788976790-1541110888-1636651838-1000_Classes\Local Settings	sO7owIyUKFh5z.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4376	powershell.exe
4376	powershell.exe
4376	powershell.exe
4376	powershell.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe
4612	Yjzlxkdoi.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeIncreaseQuotaPrivilege	4376	powershell.exe
Token: SeSecurityPrivilege	4376	powershell.exe
Token: SeTakeOwnershipPrivilege	4376	powershell.exe
Token: SeLoadDriverPrivilege	4376	powershell.exe
Token: SeSystemProfilePrivilege	4376	powershell.exe
Token: SeSystemtimePrivilege	4376	powershell.exe
Token: SeProfSingleProcessPrivilege	4376	powershell.exe
Token: SeIncBasePriorityPrivilege	4376	powershell.exe
Token: SeCreatePagefilePrivilege	4376	powershell.exe
Token: SeBackupPrivilege	4376	powershell.exe
Token: SeRestorePrivilege	4376	powershell.exe
Token: SeShutdownPrivilege	4376	powershell.exe
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeSystemEnvironmentPrivilege	4376	powershell.exe
Token: SeRemoteShutdownPrivilege	4376	powershell.exe
Token: SeUndockPrivilege	4376	powershell.exe
Token: SeManageVolumePrivilege	4376	powershell.exe
Token: 33	4376	powershell.exe
Token: 34	4376	powershell.exe
Token: 35	4376	powershell.exe
Token: 36	4376	powershell.exe
Token: SeIncreaseQuotaPrivilege	4376	powershell.exe
Token: SeSecurityPrivilege	4376	powershell.exe
Token: SeTakeOwnershipPrivilege	4376	powershell.exe
Token: SeLoadDriverPrivilege	4376	powershell.exe
Token: SeSystemProfilePrivilege	4376	powershell.exe
Token: SeSystemtimePrivilege	4376	powershell.exe
Token: SeProfSingleProcessPrivilege	4376	powershell.exe
Token: SeIncBasePriorityPrivilege	4376	powershell.exe
Token: SeCreatePagefilePrivilege	4376	powershell.exe
Token: SeBackupPrivilege	4376	powershell.exe
Token: SeRestorePrivilege	4376	powershell.exe
Token: SeShutdownPrivilege	4376	powershell.exe
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeSystemEnvironmentPrivilege	4376	powershell.exe
Token: SeRemoteShutdownPrivilege	4376	powershell.exe
Token: SeUndockPrivilege	4376	powershell.exe
Token: SeManageVolumePrivilege	4376	powershell.exe
Token: 33	4376	powershell.exe
Token: 34	4376	powershell.exe
Token: 35	4376	powershell.exe
Token: 36	4376	powershell.exe
Token: SeIncreaseQuotaPrivilege	4376	powershell.exe
Token: SeSecurityPrivilege	4376	powershell.exe
Token: SeTakeOwnershipPrivilege	4376	powershell.exe
Token: SeLoadDriverPrivilege	4376	powershell.exe
Token: SeSystemProfilePrivilege	4376	powershell.exe
Token: SeSystemtimePrivilege	4376	powershell.exe
Token: SeProfSingleProcessPrivilege	4376	powershell.exe
Token: SeIncBasePriorityPrivilege	4376	powershell.exe
Token: SeCreatePagefilePrivilege	4376	powershell.exe
Token: SeBackupPrivilege	4376	powershell.exe
Token: SeRestorePrivilege	4376	powershell.exe
Token: SeShutdownPrivilege	4376	powershell.exe
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeSystemEnvironmentPrivilege	4376	powershell.exe
Token: SeRemoteShutdownPrivilege	4376	powershell.exe
Token: SeUndockPrivilege	4376	powershell.exe
Token: SeManageVolumePrivilege	4376	powershell.exe
Token: 33	4376	powershell.exe
Token: 34	4376	powershell.exe
Token: 35	4376	powershell.exe
Token: 36	4376	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 4572	2104	sO7owIyUKFh5z.exe	84
PID 4572 wrote to memory of 4376	4572	WScript.exe	85
PID 4376 wrote to memory of 1628	4376	powershell.exe	90
PID 4376 wrote to memory of 4612	4376	powershell.exe	92

C:\Users\Admin\AppData\Local\Temp\sO7owIyUKFh5z.exe
"C:\Users\Admin\AppData\Local\Temp\sO7owIyUKFh5z.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Program Files\WindowsOptions\install.vbs"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4572
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File "run.ps1"
    3⤵
    - Modifies Windows Defender DisableAntiSpyware settings
    - Modifies Windows Defender notification settings
    - UAC bypass
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4376
  - - C:\Program Files\WindowsOptions\UnRAR.exe
      "C:\Program Files\WindowsOptions\UnRAR.exe" x -y -pByeFriend! "C:\Program Files\WindowsOptions\sfx.rar" "C:\Program Files\WindowsOptions\"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      PID:1628
  - - C:\Program Files\WindowsOptions\Yjzlxkdoi.exe
      "C:\Program Files\WindowsOptions\Yjzlxkdoi.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:4612

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

T1562

Disable or Modify Tools

Modify Registry