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
    14/10/2026, 15:00

General

  • Target
    2026-10-14_a92183cc3abed2734070b355ce67bb98_elex_wannacry.exe
  • Size 592KB
  • Sample261014-sdmc5aew8x
  • SHA256 75e142f2664cedfc9cfaac5e6d89d5df26142a471f1cfee5eeafe7bd7af6bbb8
  • 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 (2307) 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\2026-10-14_a92183cc3abed2734070b355ce67bb98_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-14_a92183cc3abed2734070b355ce67bb98_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4456

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1704430598-3087477806-3297458608-1000\desktop.ini.tmp
        • Size 592KB
        • SHA256 ec4efd8e2d20ef827d1316baec45900bf2a8d8f5a10416088ddc3b9a89cd1b6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.chm.tmp

        • Path C:\Program Files\7-Zip\7-zip.chm.tmp
        • Size 709KB
        • SHA256 0c34692e772b7af7878408373083e6eefa1983d5929c49d844240c893df0b012
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4456-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/4456-578-0x0000000000400000-0x000000000040A000-memory.dmp