Overview

overview

10

Static

static

10

2026-08-23...ry.exe

windows10-2004-x64

10

2026-08-23...ry.exe

windows11-ltsc_2024-x64

10

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
    25/08/2026, 22:44

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General

  • Target
    2026-08-23_ab5fe11863033569ffb6664be0799600_elex_wannacry.exe
  • Size 4.5MB
  • Sample260825-2n383abb36
  • SHA256 7514b8d5a0ac3881670889c37905e120d576c45fd3f14bbf5439777721ff2dd5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuransomwareworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (395) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • 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.

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-23_ab5fe11863033569ffb6664be0799600_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-23_ab5fe11863033569ffb6664be0799600_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5856

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-1738198120-2966725515-3980530802-1000\desktop.ini.tmp
        • Size 4.5MB
        • SHA256 3e1a3142a3455d8a33a3687445e9943d500ef9d0377ae5c4dbf260a4d3352e19
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 4.6MB
        • SHA256 5812c6658ccde3d9deef7fe7e0d17542ef5147b3004916e45216d8088ba695d9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5856-0-0x0000000000400000-0x000000000040A000-memory.dmp
        Download

        memory/5856-84-0x0000000000400000-0x000000000040A000-memory.dmp
        Download