Analysis

  • max time kernel
    150s
  • max time network
    142s
  • 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, 10:04

General

  • Target

    186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe

  • Size

    34KB

  • MD5

    82ae0dc11840cf3e89e597856d8f5ee8

  • SHA1

    04f71d6c139ced0b09ff5ab1539f72e0b132652b

  • SHA256

    186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2

  • SHA512

    9b99aacfbe2f74425c98cb78ddd833fd60324e274f2dcd5fe5895f0d947c3f12b437eb03b8c5461b9ef191b5b7a2af2a29588bcdcc19e250ddd0628e57ea4f1b

  • SSDEEP

    384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOYE/AE/DZKNZKy7MwlwHnFn3:uZ4FLz8ae+rOn8ae+rOrZkZ/7M4anFn3

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 (5270) 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\186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe
    "C:\Users\Admin\AppData\Local\Temp\186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4112

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

          34KB

          MD5

          63515984ac69cf4482a3451d36e20649

          SHA1

          39caf0673447fda44d6d9b3bfc996a5aaf055bb8

          SHA256

          edf676e5192c76338226b922463c2c590abc96b9b3e2d62bd4e4a44c0ed89231

          SHA512

          aec1385c79870c8f6fc90fbfc1813a592e3698f6ba75e9a9e4f1140abf6fe880dad5d958ae73a1ffa55e7c3f5f799129d41f82a767cdc5415d7cfe94cedccceb

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

          Filesize

          115KB

          MD5

          26c85fc9cc76054da17ea417a71f5b8a

          SHA1

          24b21e83242f6344fc1336cf9f507476eeb41a48

          SHA256

          3340304b342e0a5986ad6659bc17ecf98930c6061764c977ab4507656cee27bc

          SHA512

          7ab31512694696827bd7589245cd1affecb49a6f78438140ae4363a9c9336d937b6c89f7d8dbd62d34a7426c05cd4aaa65ccc158edbe05b0bb03c46a821961fa

        • memory/4112-821-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB