Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20251017-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20251017-enlocale:en-usos:windows10-ltsc_2021-x64system
  • submitted
    03/12/2025, 18:45

General

  • Target
    venvlauncher.exe
  • Size 289KB
  • Sample251203-xd65rafl31
  • SHA256 fb46b4afecf906742432eca80cb926f2d31a20c4e0f1628d9c909e28bfaa02d3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\venvlauncher.exe
    "C:\Users\Admin\AppData\Local\Temp\venvlauncher.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4428
    • C:\Users\Admin\AppData\Local\Temp\3582-490\venvlauncher.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\venvlauncher.exe"
      2⤵
      • Executes dropped EXE
      PID:4580

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        ACROTE~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
        • Size 86KB
        • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
        • MD5 SHA1 SHA512 SSDEEP

        venvlauncher.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\venvlauncher.exe
        • Size 249KB
        • SHA256 7bcdf892816a8d651e89f008cfc2f1544a41f13089af70a227b9fc54ced8551f
        • MD5 SHA1 SHA512 SSDEEP

        memory/4428-135-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4428-136-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4428-138-0x0000000000400000-0x000000000041B000-memory.dmp