Analysis

  • max time kernel
    150s
  • max time network
    93s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/04/2026, 13:23

General

  • Target
    2026-04-24_4d4a079bd84180a082a9f515114bec9f_elex_wannacry.exe
  • Size 4.9MB
  • Sample260424-qmtgpaby2m
  • SHA256 2b447ffc72d0f3cdb341ffedddb3be560348585ab9d6893b706c436d90d3d38f
  • 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++.

  • Custom signature
    Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (550) 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\2026-04-24_4d4a079bd84180a082a9f515114bec9f_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-24_4d4a079bd84180a082a9f515114bec9f_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2528

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2397528088-2630719772-1129911217-1000\desktop.ini.tmp
        • Size 4.9MB
        • SHA256 d0c1d78b76edbbc404e2d12411ec533b188cb93c03c9886e82848922f042fbed
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 5.0MB
        • SHA256 68d56358d7fc42e4eec70409152838aa66f3d918ed91895cf1f58441dfb58a02
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2528-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/2528-119-0x0000000000400000-0x000000000040A000-memory.dmp