Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/08/2026, 21:39

General

  • Target
    2026-08-30_125fa252e139a5e75c668800b5d8ce28_elex_wannacry.exe
  • Size 27KB
  • Sample260830-1hmtfsswft
  • SHA256 ce7f75177c07a1720f867ffb656d5548f80e11da8710d5bb50f557d226c45b00
  • 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 (4776) 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\2026-08-30_125fa252e139a5e75c668800b5d8ce28_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-30_125fa252e139a5e75c668800b5d8ce28_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1052

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1738198120-2966725515-3980530802-1000\desktop.ini.tmp
        • Size 27KB
        • SHA256 126daf15aa0ce55136837af2ba79671f83bc383eb6ec368dcc192cff206e24dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 126KB
        • SHA256 8a3fb50d703356efe4c73546d5972d839f675ba634eb0d579952be1c3751c19d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1052-0-0x0000000000400000-0x0000000000409D5C-memory.dmp

        memory/1052-587-0x0000000000400000-0x0000000000409D5C-memory.dmp