Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 15:00

General

  • Target
    2026-08-20_97498ced026c82f039307c489614ff56_elex_wannacry.exe
  • Size 1.3MB
  • Sample260820-sdnaessycy
  • SHA256 2f0b5950ee1cd443ad8adc4b25edab42bb2523e9039b0da126a5771ff0228a94
  • 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 (1239) 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\2026-08-20_97498ced026c82f039307c489614ff56_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-20_97498ced026c82f039307c489614ff56_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5800

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 1.3MB
        • SHA256 c6422706d5b94eef27fd9e37c48e339165a8c216f918d8c0856c82f6a3b57475
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 1.4MB
        • SHA256 e9feb1fca3a1bd731f428a28c2b96cfed39ac0e7365815cbadd1946cd25b87d3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5800-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/5800-233-0x0000000000400000-0x000000000040A000-memory.dmp