Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 23:09

General

  • Target
    2026-07-22_de8129b510f5bde9e7796643a8d63b02_elex_wannacry.exe
  • Size 68KB
  • Sample260722-25am3swfnd
  • SHA256 0cf476c9548ca945167475e8bbc54f6d088fb866f3b88b2ae2de1201a709c836
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (4370) 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\2026-07-22_de8129b510f5bde9e7796643a8d63b02_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-22_de8129b510f5bde9e7796643a8d63b02_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1408

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1738198120-2966725515-3980530802-1000\desktop.ini.tmp
        • Size 69KB
        • SHA256 1feef425d7646b851655538b0528e35656794a6b41119e997875c11b3e1827d9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 167KB
        • SHA256 ec6322b1caac137da475d01910aa9b39968f746a3bf7301a6d789eba81d6c704
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1408-0-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/1408-554-0x0000000000400000-0x0000000000408000-memory.dmp