Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/08/2026, 14:09

General

  • Target
    2026-08-08_d5b616eff79ca21230fa4418234ef3d5_elex_wannacry.exe
  • Size 1.6MB
  • Sample260808-rgjkzagl8x
  • SHA256 2b86ab88600a40c225b79235041c17ac2d2fdba05c9671da3886e77b0d909c59
  • 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 (1055) 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\2026-08-08_d5b616eff79ca21230fa4418234ef3d5_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-08_d5b616eff79ca21230fa4418234ef3d5_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2808

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 1.6MB
        • SHA256 c7cfbd61423ffb261b767696992ab85e7db04ae612b7a6c0b50f1d8de78bf5df
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 1.7MB
        • SHA256 83d31c5e8d6ea8ccfe56da9846e68367f95c5154549473935840d11d55bcbb3a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2808-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/2808-209-0x0000000000400000-0x000000000040A000-memory.dmp