Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 23:14

General

  • Target
    2026-07-22_d10342bc86358abd5e8c8d43fc07d8bd_elex_wannacry.exe
  • Size 90KB
  • Sample260722-28clvasva1
  • SHA256 9e1bad6d50832c9ada2f2100c6821c7c6b9634c9de28dcb61437d8a2309866aa
  • 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++.

  • Renames multiple (4261) 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\2026-07-22_d10342bc86358abd5e8c8d43fc07d8bd_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-22_d10342bc86358abd5e8c8d43fc07d8bd_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3436

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-3797332335-34111092-3597280141-1000\desktop.ini.tmp
        • Size 90KB
        • SHA256 7733e302ebf1530c54f5f92bad0a4b422b27c9595b6ed919cf19e2bdc3c6fbc5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 189KB
        • SHA256 5b75edad7171b67c5f6f3057a09c0a9e282601f5e617f487497b94a07f31ca9f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3436-0-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/3436-557-0x0000000000400000-0x0000000000408000-memory.dmp