Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/11/2026, 03:58

General

  • Target
    2026-11-04_fb12d16183de0c98c6ee05504f7b4b87_elex_wannacry.exe
  • Size 42KB
  • Sample261105-ejp5baw1hs
  • SHA256 4c6e1e9666ccf81ccd3a8b3b61e2b575c9f1a022be6d226df2db5437e8499335
  • 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 (5157) 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\2026-11-04_fb12d16183de0c98c6ee05504f7b4b87_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-04_fb12d16183de0c98c6ee05504f7b4b87_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3008

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2101206053-1414382737-268919432-1000\desktop.ini.tmp
        • Size 42KB
        • SHA256 8d898f514c98e305d11a3984f2db986e72b24bfaf3e5599f7d5cce96c6be1dab
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.chm.tmp

        • Path C:\Program Files\7-Zip\7-zip.chm.tmp
        • Size 159KB
        • SHA256 5401c916d1680f7e40f70846ddf685a7b70572d058e67aed7437ffe85d035818
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3008-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/3008-800-0x0000000000400000-0x000000000040A000-memory.dmp