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, 11:55

General

  • Target

    6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe

  • Size

    124KB

  • MD5

    712e8e248eadcadea6c4066912f56eee

  • SHA1

    ce907cf7953845c635e80a53dea37413d1d321bf

  • SHA256

    6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740

  • SHA512

    abd96f7f352f5612bf54edf3c32a0137990bcfad5a0a585467ce7140183a3f4ebb14f2a2d5e07c9b26c56e2624702dfe262f0e2bdcbf9e0babcde1d4d20c90d6

  • SSDEEP

    1536:s7ZppApdIIoJhiJhY3QICr7dG2JAh8Sh8Ge+AeQ7w9yyV8gcO:spWpYHySeA

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 (4853) 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\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe
    "C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3236

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-1153236273-2212388449-1493869963-1000\desktop.ini.tmp

          Filesize

          125KB

          MD5

          20b56da0f4f612bb4dbefdf28566c557

          SHA1

          ef245b71251b6d94bc6bf11b32910e8fadc72eda

          SHA256

          e69ea636b997bceb49b603120100e35b62492596a34b4a4a0ba766a3ea6fa1e3

          SHA512

          ddfb061504d83c2a59e0185cca34f485991c3ad6b933e55cd53593877fe5d16e3aa7426e8ff89f2c0822faaa64c684b725599f3b69df7542c231f2cbb7313d35

        • C:\f518c2ae32873fab6fcffcc19027\2010_x64.log.html.tmp

          Filesize

          211KB

          MD5

          b749f7526d32ea5192a8632ab8f93174

          SHA1

          a741b929be63f701eb0280cf5b4ff6f9f49edcc8

          SHA256

          89b92699d4c73f68a8625fc1adddd947290b3f884922a990ab94e0b21dad3a79

          SHA512

          8f8c61ddde911b61f2c03d9ddb05acdf38ecda146b62ec19a2079b4217db233dc92088a5b84365ed30d7bbe33bafd5dea8992c2ff62c2518b6ed00ab8a908a8a