Analysis

  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 18:47

General

  • Target
    2026-08-10_4b49216ab4d1b8c8821012c071f78159_elex_wannacry.exe
  • Size 760KB
  • Sample260810-xe665sfl4s
  • SHA256 1827222b4f3cc1ab03cca5daf5c16eacdc177565b2d96d022632705c8d514c4a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 2 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (1929) 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\2026-08-10_4b49216ab4d1b8c8821012c071f78159_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-10_4b49216ab4d1b8c8821012c071f78159_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4076

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2301830172-776172150-2531349243-1000\desktop.ini.tmp
        • Size 760KB
        • SHA256 41bf757d724409022d748a9af7816fab78fe43e7bc635c7145e589867fca15cd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 859KB
        • SHA256 b7f6bb7903ccc1b20ada0f0695fa5ecc7bfbcb70185d258a42200959c519bc35
        • MD5 SHA1 SHA512 SSDEEP TLSH