Overview

overview

10

Static

static

10

2026-08-22...ry.exe

windows10-2004-x64

10

2026-08-22...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/08/2026, 11:03

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General

  • Target
    2026-08-22_26dda3d4d5002f2f8b1289696c8a0650_elex_wannacry.exe
  • Size 25KB
  • Sample260823-m5zvmsgj3z
  • SHA256 4b544e377ae214879852b86d1a6867cc137f9ff9d72beef165ecbd2b8c219cb5
  • 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 (4889) 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\2026-08-22_26dda3d4d5002f2f8b1289696c8a0650_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-22_26dda3d4d5002f2f8b1289696c8a0650_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4156

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-3611646547-550105268-947503007-1000\desktop.ini.tmp
        • Size 25KB
        • SHA256 4540198f4d27861be2f92610a1160d8f1f03659b032755dd21cc67d9880fea81
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 124KB
        • SHA256 4d243dab770c96f1f4db18880bd0df5f7944ba1296998c54d5fac78deebc7c5e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4156-0-0x0000000000400000-0x0000000000409D5C-memory.dmp
        Download

        memory/4156-630-0x0000000000400000-0x0000000000409D5C-memory.dmp
        Download