9ceeacd7f64359972fc44c73798a4e215effeff4bda4f6e309bedc67bc0c8d38

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
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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications\DisableEnhancedNotifications = "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

Executes dropped EXE 2 IoCs

pid	Process
1272	UnRAR.exe
1176	Yjzlxkdoi.exe

Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs

execution

Visual Basic

T1059.005

pid	Process
5544	WScript.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\WindowsOptions	data_cache.exe
File opened for modification	C:\Program Files\WindowsOptions\sfx.rar	data_cache.exe
File created	C:\Program Files\WindowsOptions\UnRAR.exe	data_cache.exe
File created	C:\Program Files\WindowsOptions\install.vbs	data_cache.exe
File opened for modification	C:\Program Files\WindowsOptions\install.vbs	data_cache.exe
File created	C:\Program Files\WindowsOptions\run.ps1	data_cache.exe
File created	C:\Program Files\WindowsOptions\__tmp_rar_sfx_access_check_240698078	data_cache.exe
File created	C:\Program Files\WindowsOptions\sfx.rar	data_cache.exe
File opened for modification	C:\Program Files\WindowsOptions\UnRAR.exe	data_cache.exe
File opened for modification	C:\Program Files\WindowsOptions\run.ps1	data_cache.exe
File created	C:\Program Files\WindowsOptions\Yjzlxkdoi.exe	UnRAR.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
5208	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-1-5-21-3797332335-34111092-3597280141-1000_Classes\Local Settings	data_cache.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
5208	powershell.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe
1176	Yjzlxkdoi.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5208	powershell.exe
Token: SeIncreaseQuotaPrivilege	5208	powershell.exe
Token: SeSecurityPrivilege	5208	powershell.exe
Token: SeTakeOwnershipPrivilege	5208	powershell.exe
Token: SeLoadDriverPrivilege	5208	powershell.exe
Token: SeSystemProfilePrivilege	5208	powershell.exe
Token: SeSystemtimePrivilege	5208	powershell.exe
Token: SeProfSingleProcessPrivilege	5208	powershell.exe
Token: SeIncBasePriorityPrivilege	5208	powershell.exe
Token: SeCreatePagefilePrivilege	5208	powershell.exe
Token: SeBackupPrivilege	5208	powershell.exe
Token: SeRestorePrivilege	5208	powershell.exe
Token: SeShutdownPrivilege	5208	powershell.exe
Token: SeDebugPrivilege	5208	powershell.exe
Token: SeSystemEnvironmentPrivilege	5208	powershell.exe
Token: SeRemoteShutdownPrivilege	5208	powershell.exe
Token: SeUndockPrivilege	5208	powershell.exe
Token: SeManageVolumePrivilege	5208	powershell.exe
Token: 33	5208	powershell.exe
Token: 34	5208	powershell.exe
Token: 35	5208	powershell.exe
Token: 36	5208	powershell.exe
Token: SeIncreaseQuotaPrivilege	5208	powershell.exe
Token: SeSecurityPrivilege	5208	powershell.exe
Token: SeTakeOwnershipPrivilege	5208	powershell.exe
Token: SeLoadDriverPrivilege	5208	powershell.exe
Token: SeSystemProfilePrivilege	5208	powershell.exe
Token: SeSystemtimePrivilege	5208	powershell.exe
Token: SeProfSingleProcessPrivilege	5208	powershell.exe
Token: SeIncBasePriorityPrivilege	5208	powershell.exe
Token: SeCreatePagefilePrivilege	5208	powershell.exe
Token: SeBackupPrivilege	5208	powershell.exe
Token: SeRestorePrivilege	5208	powershell.exe
Token: SeShutdownPrivilege	5208	powershell.exe
Token: SeDebugPrivilege	5208	powershell.exe
Token: SeSystemEnvironmentPrivilege	5208	powershell.exe
Token: SeRemoteShutdownPrivilege	5208	powershell.exe
Token: SeUndockPrivilege	5208	powershell.exe
Token: SeManageVolumePrivilege	5208	powershell.exe
Token: 33	5208	powershell.exe
Token: 34	5208	powershell.exe
Token: 35	5208	powershell.exe
Token: 36	5208	powershell.exe
Token: SeIncreaseQuotaPrivilege	5208	powershell.exe
Token: SeSecurityPrivilege	5208	powershell.exe
Token: SeTakeOwnershipPrivilege	5208	powershell.exe
Token: SeLoadDriverPrivilege	5208	powershell.exe
Token: SeSystemProfilePrivilege	5208	powershell.exe
Token: SeSystemtimePrivilege	5208	powershell.exe
Token: SeProfSingleProcessPrivilege	5208	powershell.exe
Token: SeIncBasePriorityPrivilege	5208	powershell.exe
Token: SeCreatePagefilePrivilege	5208	powershell.exe
Token: SeBackupPrivilege	5208	powershell.exe
Token: SeRestorePrivilege	5208	powershell.exe
Token: SeShutdownPrivilege	5208	powershell.exe
Token: SeDebugPrivilege	5208	powershell.exe
Token: SeSystemEnvironmentPrivilege	5208	powershell.exe
Token: SeRemoteShutdownPrivilege	5208	powershell.exe
Token: SeUndockPrivilege	5208	powershell.exe
Token: SeManageVolumePrivilege	5208	powershell.exe
Token: 33	5208	powershell.exe
Token: 34	5208	powershell.exe
Token: 35	5208	powershell.exe
Token: 36	5208	powershell.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 5544	4308	data_cache.exe	89
PID 5544 wrote to memory of 5208	5544	WScript.exe	90
PID 5208 wrote to memory of 5224	5208	powershell.exe	92
PID 5208 wrote to memory of 1272	5208	powershell.exe	94
PID 5208 wrote to memory of 1176	5208	powershell.exe	96

C:\Users\Admin\AppData\Local\Temp\data_cache.exe
"C:\Users\Admin\AppData\Local\Temp\data_cache.exe"
1⤵
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Program Files\WindowsOptions\install.vbs"
  2⤵
  - Executes a VBScript file via the Windows Script Host.
  - Suspicious use of WriteProcessMemory
  PID:5544
- - 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:5208
  - - C:\Windows\system32\CiTool.exe
      "C:\Windows\system32\CiTool.exe" -r
      4⤵
      PID:5224
  - - 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:1272
  - - 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:1176

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Visual Basic

T1059.005

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