Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/08/2026, 04:46

General

  • Target
    2026-08-13_66c599dad91dfb9b3bc9d1a8de00b94b_elex_wannacry.exe
  • Size 1.7MB
  • Sample260813-fd2rlabl7v
  • SHA256 b820d10cf5fe87fd0cea13e6fb02ae76611845e8a9a63754fc40bd0cbb9a32d5
  • 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 (1095) 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\2026-08-13_66c599dad91dfb9b3bc9d1a8de00b94b_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-13_66c599dad91dfb9b3bc9d1a8de00b94b_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1524

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-3797332335-34111092-3597280141-1000\desktop.ini.tmp
        • Size 1.7MB
        • SHA256 f9191fd046aaa9a6354ae7a620618cc2912b0119da4f602534f05165c3b4d0d5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 1.8MB
        • SHA256 7812b1a6b2a4ca34dc490a2eb5c82c7ef02c6da090c2064b5cb4eb7b785e56e7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1524-0-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/1524-190-0x0000000000400000-0x0000000000408000-memory.dmp