Analysis

  • max time kernel
    298s
  • max time network
    279s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    14/11/2026, 03:58

General

  • Target
    port80.msi
  • Size 5.0MB
  • Sample261114-ej1wtact9z
  • SHA256 414c9037dce4594441fcf9e835ed11520ec9b6d434718913351ef6d6ba1f547e
  • 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
  • Drops a kernel driver into a user folder 1 TTPs 1 IoCs

    Places a kernel driver outside the normal driver folder, which installers may do while staging drivers; malware can do it before loading its own driver to gain kernel-level control.

  • Creates a file in the Startup directory 1 TTPs 2 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\port80.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:5040
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Drops a kernel driver into a user folder
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4904
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5068
      • C:\Windows\system32\cmd.exe
        cmd.exe /c start AutoIt3_x64.exe Monkey2023.au3
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4820
        • C:\Users\Admin\AppData\Local\Pattern_Similar_Bike_Mandate\AutoIt3_x64.exe
          AutoIt3_x64.exe Monkey2023.au3
          3⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:3544
          • C:\ProgramData\Monkey2023\AutoIt3_x64.exe
            "C:\ProgramData\Monkey2023\AutoIt3_x64.exe" "C:\ProgramData\Monkey2023\Monkey2023.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:4592
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:3340

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5894ad.rbs

          • Path C:\Config.Msi\e5894ad.rbs
          • Size 24KB
          • SHA256 a0beafb4ef8a04f887a7b53273d157a425e0f5b9292d2774d8216f4ee96d16a5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          AutoIt3_x64.exe

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

          Monkey2023.au3

          • Path C:\Users\Admin\AppData\Local\Pattern_Similar_Bike_Mandate\Monkey2023.au3
          • Size 36KB
          • SHA256 168389740e1409e0802b6d97dae81b16ad3a93c502ecf1459700af70624ac4f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          armv7-w64-mingw32uwp-nm.exe

          • Path C:\Users\Admin\AppData\Local\Pattern_Similar_Bike_Mandate\armv7-w64-mingw32uwp-nm.exe
          • Size 15KB
          • SHA256 b0b48a418510f50574b73ed6728dec643f09a1ad1798f0ccdbe654ca33dcfffc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          i686-w64-mingw32uwp-c++.exe

          • Path C:\Users\Admin\AppData\Local\Pattern_Similar_Bike_Mandate\i686-w64-mingw32uwp-c++.exe
          • Size 16KB
          • SHA256 9aefd53dd91fd0e6541f27170a8321903c1ce3edf44a974586beb96c7336dda2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          link.19940-cvtres.write.1.tlog

          • Path C:\Users\Admin\AppData\Local\Pattern_Similar_Bike_Mandate\link.19940-cvtres.write.1.tlog
          • Size 2B
          • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
          • MD5 SHA1 SHA512

          mixture.sys

          • Path C:\Users\Admin\AppData\Local\Pattern_Similar_Bike_Mandate\mixture.sys
          • Size 419KB
          • SHA256 5f61ef78bbcf323de8f6c7a63f55a672bfc5fb5783604a8b88c0d934b68e051b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5894ae.msi

          • Path C:\Windows\Installer\e5894ae.msi
          • Size 5.0MB
          • SHA256 414c9037dce4594441fcf9e835ed11520ec9b6d434718913351ef6d6ba1f547e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 f1bda306b58bc5d479789cca97668a328443b8c38387b10caa3a4bfb48500505
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {f9672fdd-fcce-4989-a731-21b5cba35222}_OnDiskSnapshotProp

          • Path \??\Volume{5acbaf70-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{f9672fdd-fcce-4989-a731-21b5cba35222}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 d8e82738bbe7a9ab7a8210926692f962f383a3581163b80cee1dcc87c754615c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4592-120-0x000001E5CA3F0000-0x000001E5CA459000-memory.dmp

          memory/4592-123-0x000001E5E41E0000-0x000001E5E4230000-memory.dmp

          memory/4592-124-0x000001E5E53D0000-0x000001E5E5446000-memory.dmp

          memory/4592-122-0x000001E5E5520000-0x000001E5E56E2000-memory.dmp

          memory/4592-121-0x000001E5CA650000-0x000001E5CA6BC000-memory.dmp

          memory/4592-130-0x000001E5E5D70000-0x000001E5E6298000-memory.dmp