Analysis

  • max time kernel
    300s
  • max time network
    265s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    14/11/2026, 04:26

General

  • Target
    eunewport.msi
  • Size 1.5MB
  • Sample261114-e2r2mavw4k
  • SHA256 db8ecda653be2e9df847966f2ef6fbfb7879423ab4459447883ab9c82473bfa7
  • 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 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 8 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 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\eunewport.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4784
  • 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:4876
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5452
      • C:\Windows\system32\cmd.exe
        cmd.exe /c start AutoIt3_x64.exe Banana841.au3
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3876
        • C:\Users\Admin\AppData\Local\Convince_Critic\AutoIt3_x64.exe
          AutoIt3_x64.exe Banana841.au3
          3⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:4184
          • C:\ProgramData\Banana841\AutoIt3_x64.exe
            "C:\ProgramData\Banana841\AutoIt3_x64.exe" "C:\ProgramData\Banana841\Banana841.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:892
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:5572

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e590549.rbs

          • Path C:\Config.Msi\e590549.rbs
          • Size 12KB
          • SHA256 51e6fce705bdb060dd118162a58e53b44ed52bdae08d1a2d2b3bcb8a767bd69f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          AutoIt3_x64.exe

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

          Banana841.au3

          • Path C:\Users\Admin\AppData\Local\Convince_Critic\Banana841.au3
          • Size 37KB
          • SHA256 983415efae0352f33fe408ff15560cf1366eccb3aa32c88383ad86996aaaca7c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          cake.tmp

          • Path C:\Users\Admin\AppData\Local\Convince_Critic\cake.tmp
          • Size 419KB
          • SHA256 aa105bda212d3eec9b341fe77f80f6aba3dee7fd7f791aa3a7937e189376160b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59054a.msi

          • Path C:\Windows\Installer\e59054a.msi
          • Size 1.5MB
          • SHA256 db8ecda653be2e9df847966f2ef6fbfb7879423ab4459447883ab9c82473bfa7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.0MB
          • SHA256 d97a631197546974be5c92d4d9e0d5d39d9c9eabe7108ddd9e68ca7029a82ab2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {de32ff46-edda-4501-9658-8554513f8409}_OnDiskSnapshotProp

          • Path \??\Volume{08df4b4c-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{de32ff46-edda-4501-9658-8554513f8409}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b66db96c4ea4e8d40c79577adbdf37a962fa854cb7d2096f1a78a57e871413ae
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/892-57-0x000001C0B4EE0000-0x000001C0B4F4C000-memory.dmp

          memory/892-59-0x000001C0B68B0000-0x000001C0B6900000-memory.dmp

          memory/892-60-0x000001C0B6980000-0x000001C0B69F6000-memory.dmp

          memory/892-58-0x000001C0B6A80000-0x000001C0B6C42000-memory.dmp

          memory/892-56-0x000001C09C780000-0x000001C09C7E9000-memory.dmp

          memory/892-66-0x000001C0B72C0000-0x000001C0B77E8000-memory.dmp