Analysis

  • max time kernel
    150s
  • max time network
    141s
  • 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

    035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe

  • Size

    22KB

  • MD5

    4d072e3966ff1328f1e37b0358f85476

  • SHA1

    1b8b11bb47169cb3ac0db99ee982c1d013624cf0

  • SHA256

    035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d

  • SHA512

    cdb0ef28de61a8a50de206a0a874c1e533423b302dc1e0e0da6d697678a971da9e28392fc0c93001f7e718ee591b28b0b1b835e8238261344d9e662cda623e9a

  • SSDEEP

    384:gBt7Br5xjL9AgA71FbhvP/KWLsqmFae+rOAqmFae+rOiOZ2OZoaqyklYWynDyklM:s7BlpppARFbhdLz8ae+rOn8ae+rOka5i

Malware Config

Signatures

  • Cosmu

    Cosmu is a Windows worm written in C++.

  • Cosmu family
  • Detects Cosmu payload 2 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (5309) 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\035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe
    "C:\Users\Admin\AppData\Local\Temp\035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3852

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-3299287909-2279959458-198972791-1000\desktop.ini.tmp

          Filesize

          22KB

          MD5

          26bb7204537068f6645989a418595e17

          SHA1

          513c0c25f4bd4b03de15299431f3c4a55309b3b6

          SHA256

          2824d40239ae6e03c1a8f4c7e7fdf7cf8b9f81b352a6cb616dce8e002ce85057

          SHA512

          e9702145a523969cf2bdc526be7dd3ebe6d3a2000d115481e31b50afbe62d7e9a9d545049547cacd31d588bb8da4e39e135696ace9446d494d362b0b4a7dc064

        • C:\8e056885788215100b95f8050bba49\2010_x64.log.html.tmp

          Filesize

          108KB

          MD5

          78ff529d351832a3a9788b8475fc16a8

          SHA1

          76ae97910b37009839d5858e74da1a13e48be7c5

          SHA256

          f4c6419ab71b4ab0950dc831b1c07e160f19ccb00be799518e4ed1faeed39820

          SHA512

          73ffecd550cb5fd086a50ce37e3b91ee69e9e06d410a496335409126fced5b016ed7721642b2131631372b7a24b2636460f7fcdee0dda0fce751363a3a770d13