Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/08/2026, 18:10

General

  • Target
    2026-08-18_3e0fa2f59222063cced0d6c6adfc504a_elex_wannacry.exe
  • Size 676KB
  • Sample260818-wr8easaf73
  • SHA256 0817780f76339d6872606acb00cc5a79d01d9f24aadebb49a0e7eb3c5e6ac2d6
  • 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++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (2011) 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\2026-08-18_3e0fa2f59222063cced0d6c6adfc504a_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-18_3e0fa2f59222063cced0d6c6adfc504a_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3556

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 676KB
        • SHA256 5288b20866462fb9e9010950d6e7e98e8c42a2d7ff753ba7e69e884e20aa113e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 775KB
        • SHA256 796f9678483a8178fb0ea8a4308fb5f4bbbad101f9d1ef4d8e91ebc69c215aa7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3556-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/3556-352-0x0000000000400000-0x000000000040A000-memory.dmp