Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2025, 10:01

General

  • Target

    3500d96919a1e8e68af1c39bd63076ab57e67bd051a1b0aad0a259d17d7f2d52.exe

  • Size

    33KB

  • MD5

    081992eb1480801df44c28dcfeee542f

  • SHA1

    024ffc4694af9734d1032294171fd20e2618fa2a

  • SHA256

    3500d96919a1e8e68af1c39bd63076ab57e67bd051a1b0aad0a259d17d7f2d52

  • SHA512

    dbbb11b7d1cfd55dcd205c3161f9e03ca1c2f66b1705e9c67000657ac6ae46cd07dad4c52199f4c76410d01326a24322816ae1e541a6d0f1a40a3ed583a5aac2

  • SSDEEP

    384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOYE/AE/DZKNZKy7MwlwWP3:uZ4FLz8ae+rOn8ae+rOrZkZ/7M45P3

Malware Config

Signatures

  • Cosmu

    Cosmu is a Windows worm written in C++.

  • Cosmu family
  • Detects Cosmu payload 1 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (5241) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Program Files directory 64 IoCs
  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\3500d96919a1e8e68af1c39bd63076ab57e67bd051a1b0aad0a259d17d7f2d52.exe
    "C:\Users\Admin\AppData\Local\Temp\3500d96919a1e8e68af1c39bd63076ab57e67bd051a1b0aad0a259d17d7f2d52.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1948

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-3674642747-2260306818-3009887879-1000\desktop.ini.tmp

          Filesize

          33KB

          MD5

          8e0171ec4ca30e665d3b127e483682b4

          SHA1

          7fe724c155e5f662d235c90375b6c20e80844532

          SHA256

          0cb0595fec135641ef33682fb7f37afcfb812c80f0f38401530fad824367458f

          SHA512

          8983889f2ae6e57213ccf832ed4fa6027868be3ff6409cf2497cb1f45ace8973e174b20f11e48a9d15825a0406368671c4cdf8e65a2a896410219ffa92f2b06f

        • C:\967f022c4c136664abfad56c1fb73a\2010_x86.log.html.tmp

          Filesize

          114KB

          MD5

          aa4a7d849d315496eb9e13927d8fe4c0

          SHA1

          13e0b964de7e44cf8cc55641d92d1f3df9e5eef0

          SHA256

          b2c8199e98cc71a685cb8361457baecd54ff9ac62337380f62bfeec3e55f6d47

          SHA512

          d386c3cc03326d09ab34bf942a94ee46560cd8d9214450f9945bc5bf475c997e10d6e19bdb5af71da2a07ce7c9f986ce0e03d919092d2e13b61f9e0783d592ee

        • memory/1948-795-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB