Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/06/2025, 08:18

General

  • Target

    972482ea598bb8bd584e1e7f049c6add293ef35b75baf299e6aa9213f8fb28e5.exe

  • Size

    29KB

  • MD5

    1dab7b8cffc06987f128a88ccfdc467b

  • SHA1

    a8ef5aaefa9b035d28734cec60babbcfcd891399

  • SHA256

    972482ea598bb8bd584e1e7f049c6add293ef35b75baf299e6aa9213f8fb28e5

  • SHA512

    b96493d83e9c0aa394cd0ddf3563d3fced937e01e5d836cc205ef085665e4bb06277ee0c30aab4ca7fa52b7c667f3e26fa9b2995df83091464730149e67dd35b

  • SSDEEP

    384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOfijcijSkR:uZ4FLz8ae+rOn8ae+rOfXHkR

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 (5214) 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\972482ea598bb8bd584e1e7f049c6add293ef35b75baf299e6aa9213f8fb28e5.exe
    "C:\Users\Admin\AppData\Local\Temp\972482ea598bb8bd584e1e7f049c6add293ef35b75baf299e6aa9213f8fb28e5.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:648

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

          29KB

          MD5

          9e9ed1c1db2559ef1e8e237656763ff5

          SHA1

          517cafd7c3d4272de08a4069c9d24fadfd65e942

          SHA256

          6fc7a6eea79e425b59565d2477d236188a315d2a181d098fb15f6a6b5b4e8e04

          SHA512

          1e19107747c2902559674d81eff520b9e46bd8f472d1ebe9b182fbd18a90c0bcce096bb207d942b291610d17392799dbcb14885a02c18345dc9f0c4ce6224c87

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

          Filesize

          110KB

          MD5

          8a872585d590290004a764678fa7280f

          SHA1

          43b8ed34d386869195edbae22541cba3bdf71f1d

          SHA256

          ea18e19f46a8d94d624bd4d6dc4634e9ea5049d477c2f49a803acc20b01f66dd

          SHA512

          35e7a47e922b391cd48fee6434de70089bf9de684e567693a9cf64736365a16284359ff31d3708382734ae1230b0a92f827f53dbed0144904d2c022902bf974b

        • memory/648-829-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB