Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    11/11/2026, 03:43

General

  • Target
    newcrytest.msi
  • Size 1.5MB
  • Sample261111-d91hasdw6l
  • SHA256 4351a7e899a2d3d2b8fa465b2567857a03ecc48aef9b9a67bc8bbd8f67303ec0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: SectopRAT

    SectopRAT also known as Arechclient2 is a remote access trojan first seen in November 2019.

  • Detects SectopRAT aka Arechclient2 1 IoCs
  • Creates a file in the Startup directory 1 TTPs 3 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 2 IoCs
  • Registers new Windows logon scripts automatically executed at logon. 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 12 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\newcrytest.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:4120
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4660
      • C:\Windows\system32\cmd.exe
        cmd.exe /c start AutoIt3_x64.exe TokenRuntime.au3
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:2128
        • C:\Users\Admin\AppData\Local\Cushion_Pony_Robot\AutoIt3_x64.exe
          AutoIt3_x64.exe TokenRuntime.au3
          3⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:4664
          • C:\ProgramData\TokenRuntime\AutoIt3_x64.exe
            "C:\ProgramData\TokenRuntime\AutoIt3_x64.exe" "C:\ProgramData\TokenRuntime\TokenRuntime.au3"
            4⤵
            • Creates a file in the Startup directory
            • Executes dropped EXE
            • Registers new Windows logon scripts automatically executed at logon.
            • Reads the TCP/IP host and domain name from the registry
            • NTFS ADS
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:3648
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:4328

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5a2223.rbs

          • Path C:\Config.Msi\e5a2223.rbs
          • Size 12KB
          • SHA256 88be57c9917f33c8f1028be2d82ad52b3bc7b83029d20bf72a342159727c3f73
          • MD5 SHA1 SHA512 SSDEEP TLSH

          AutoIt3_x64.exe

          • Path C:\Users\Admin\AppData\Local\Cushion_Pony_Robot\AutoIt3_x64.exe
          • Size 1.1MB
          • SHA256 5d69a932a077fee044b193c28e84564143f5c7e51079ab48e88fef74ab0b77b7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          TokenRuntime.au3

          • Path C:\Users\Admin\AppData\Local\Cushion_Pony_Robot\TokenRuntime.au3
          • Size 96KB
          • SHA256 5e35b43c76808ef121783669d7a0f1ab8d6bfacc7e962a30d8c3907701daed89
          • MD5 SHA1 SHA512 SSDEEP TLSH

          mechanic.db

          • Path C:\Users\Admin\AppData\Local\Cushion_Pony_Robot\mechanic.db
          • Size 419KB
          • SHA256 e6f83ed2a22ab3c11fa92923a7e46e359d3559f75265941a0c745b888d53d6a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a2224.msi

          • Path C:\Windows\Installer\e5a2224.msi
          • Size 1.5MB
          • SHA256 4351a7e899a2d3d2b8fa465b2567857a03ecc48aef9b9a67bc8bbd8f67303ec0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 94e57f13289426b06e90f68d6de2e00e83c9849a6fedf448a95d751488d4d6e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {07cd8d00-b1fb-4308-9d23-48f79f1f83f9}_OnDiskSnapshotProp

          • Path \??\Volume{e35b4427-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{07cd8d00-b1fb-4308-9d23-48f79f1f83f9}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 636d5e4323c5dce6d6f4f6e68c695e8af263913699bd11e565b38ac5269939a3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3648-57-0x000002E6F6FA0000-0x000002E6F7009000-memory.dmp

          memory/3648-58-0x000002E6F9C00000-0x000002E6F9C6C000-memory.dmp

          memory/3648-59-0x000002E6F9FC0000-0x000002E6FA182000-memory.dmp

          memory/3648-60-0x000002E6F9E40000-0x000002E6F9E90000-memory.dmp

          memory/3648-61-0x000002E6F9F10000-0x000002E6F9F86000-memory.dmp