Analysis

  • max time kernel
    298s
  • max time network
    297s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    11/11/2026, 03:28

General

  • Target
    newcrytest.msi
  • Size 1.5MB
  • Sample261111-d1mvvaea99
  • 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.

  • 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 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
    PID:2720
  • 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 WriteProcessMemory
    PID:2208
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5004
      • 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:3136
        • 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:3012
          • 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
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:4228
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3944

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58ad17.rbs

          • Path C:\Config.Msi\e58ad17.rbs
          • Size 12KB
          • SHA256 2fe687b3c807d547dd1e0e305e786fe1723f4df4df4df95c6371e72e1ec98aaf
          • 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

          e58ad18.msi

          • Path C:\Windows\Installer\e58ad18.msi
          • Size 1.5MB
          • SHA256 4351a7e899a2d3d2b8fa465b2567857a03ecc48aef9b9a67bc8bbd8f67303ec0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 4ea9b8052fb9007cf8198be545cddbfbf8f0fbb771c04fb2f3dc937043026d07
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {ae5eeb4c-652d-4c32-af62-c1b5840faad4}_OnDiskSnapshotProp

          • Path \??\Volume{24346b4b-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{ae5eeb4c-652d-4c32-af62-c1b5840faad4}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 78c2fba317f4f6106e90321ba0f2bc39c2e42aab94a1398f5844c0db696c0bb7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4228-58-0x0000022EFDEB0000-0x0000022EFDF1C000-memory.dmp

          memory/4228-60-0x0000022EFDF90000-0x0000022EFDFE0000-memory.dmp

          memory/4228-61-0x0000022EFFB40000-0x0000022EFFBB6000-memory.dmp

          memory/4228-59-0x0000022EFFDB0000-0x0000022EFFF72000-memory.dmp

          memory/4228-57-0x0000022EFDD20000-0x0000022EFDD89000-memory.dmp

          memory/4228-67-0x0000022E997D0000-0x0000022E99CF8000-memory.dmp