Analysis

  • max time kernel
    150s
  • max time network
    137s
  • 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, 08:15

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 (5279) 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:1536

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

          2b9c57d5307371616c9b6c4c5c9677ac

          SHA1

          a1abb20e108b3f7f1048241cdd3564d4065f632a

          SHA256

          f2c86ba44e330799f70a2e6f5ec14c7d49022d1b999d464bbd27a624b3c2093b

          SHA512

          e9317b7f951da142d269249710b1e09fe72a6fb35d449ebf0233303e3ade82694d93fc755c9b7910cb96160f0224f94995a77f33759576c91e638cfa4a86fda7

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

          Filesize

          110KB

          MD5

          e2f6ae9f7f589c65bd22d0ef919bf8eb

          SHA1

          6125563aea69898dd51b12d61b8cb922df9af560

          SHA256

          88b0a3bb280e43ecda9ad84f9bbf2f901f7f3ac4af0aef7f8031fc07ff83cb2c

          SHA512

          171eb410899eb4f9b97939d43525c7307bef0d3f41c80f59aeb82da91a9d1960780bcdf227415dbcd13b237ed53674def4052b6af10a04cd4c3061e02fef4c64

        • memory/1536-815-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB