Analysis

  • max time kernel
    149s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/07/2025, 05:23

General

  • Target

    d1583f19bce89b61829f036bb1856cbc8eb5a912bb6e2672e6d9806edba192b0.exe

  • Size

    28KB

  • MD5

    6ba02c3b1bbd1f3526e98624a714f317

  • SHA1

    91d9f99383564c255d50fb326f54232bbe6d9b6c

  • SHA256

    d1583f19bce89b61829f036bb1856cbc8eb5a912bb6e2672e6d9806edba192b0

  • SHA512

    1bc2e6b737a2731cf82a46adddc5786046dafcdc9d24549c729c7d7c03487a048775bdf524918267a78d11b2c69f834fdc985771ba6b513f13eb0fa76b94767c

  • SSDEEP

    768:uZ4FLm8Q8Boxn6oxSoxn6ox1YFlLYFlnb9g:uGsx1xtx1xWgn9g

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 (5196) 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\d1583f19bce89b61829f036bb1856cbc8eb5a912bb6e2672e6d9806edba192b0.exe
    "C:\Users\Admin\AppData\Local\Temp\d1583f19bce89b61829f036bb1856cbc8eb5a912bb6e2672e6d9806edba192b0.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:6080

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-3951986358-4006919840-1009690842-1000\desktop.ini.tmp

          Filesize

          28KB

          MD5

          86be624cba1c5273611c9578d44df08f

          SHA1

          5fc8672aec0af3588d512b47df4115c57dec4a80

          SHA256

          351d1b39676f7b94aec037e0aff62502ce27fcb00bc653734745a1c774004bd5

          SHA512

          45796ce41791ecac7f38f07124af0a4f5638f1303593d59829fdf7db710f5ef6c033525340a2d7a79f2ad5efca3269cce6588eaec8b4ecc7fbb35b4425f4b1ce

        • C:\e871de07eca81c0a47\2010_x86.log.html.tmp

          Filesize

          108KB

          MD5

          66ad297ca6cdf1f3ed0e8379c187edb4

          SHA1

          810e5408fbf3119410a218867181d541bec331ea

          SHA256

          55f697c52b1e8b900b1e8e3ce7a43231477866a7b5a1e2fd0c5d9f6d6b5f743e

          SHA512

          b9ca09a04774b7821254229c56d4091129601d93c4c11b864c7d9b6fe95a5aa8e8e2429b844c479848278a62b5502057009f2b11f645488de54f8e13c308291c

        • memory/6080-789-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB