Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 10:08

General

  • Target
    2026-08-09_6881c96025a3d86161d1243383261e2a_elex_wannacry.exe
  • Size 84KB
  • Sample260809-l6bc1ayycx
  • SHA256 21b8a1abbe99af331cb75506cd8c566bf6ab8953d14f60b06b5265dbd209efda
  • 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 (4249) 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\2026-08-09_6881c96025a3d86161d1243383261e2a_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-09_6881c96025a3d86161d1243383261e2a_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5576

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-4046655672-1449839301-2197395821-1000\desktop.ini.tmp
        • Size 84KB
        • SHA256 f3e9980ea9fc9fdb1818b74e89820464a7e437d809873418eba7ad448f7e4d93
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 183KB
        • SHA256 7bf0af64ef4ff823fee8a071e3635dd626500d15d3bb0fe9f301e9abfb57e027
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5576-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/5576-553-0x0000000000400000-0x000000000040A000-memory.dmp