Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/11/2026, 18:49

General

  • Target
    2026-11-03_63283eb4bcaf248bb4ee2000cd371054_elex_wannacry.exe
  • Size 372KB
  • Sample261104-xgp1msed98
  • SHA256 d8a917b39f3ff67b04ba8a972ecc686a08062dfbb58742f1513f2379a08aaf14
  • 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 (2676) 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\2026-11-03_63283eb4bcaf248bb4ee2000cd371054_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-03_63283eb4bcaf248bb4ee2000cd371054_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3344

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-4280978039-528710165-233981602-1000\desktop.ini.tmp
        • Size 372KB
        • SHA256 139b0026235aef818cdcd4184e2d3ad91e16aa9eae20794a6f69cfc9e1e2b87b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.chm.tmp

        • Path C:\Program Files\7-Zip\7-zip.chm.tmp
        • Size 489KB
        • SHA256 01c335f1db67012ee8fd3e5eb4480e6128297c7c8eb2d873b4bb4ae4a32891c7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3344-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/3344-606-0x0000000000400000-0x000000000040A000-memory.dmp