Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 07:05

General

  • Target
    2026-09-30_e63892399f81209154c1fbd26dde807d_elex_wannacry.exe
  • Size 365KB
  • Sample260930-hwsbzss18n
  • SHA256 74b1d1334315bbafe807b6033f457222c340bef3d29a0242c22e80fa74229a6f
  • 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 (2319) 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\2026-09-30_e63892399f81209154c1fbd26dde807d_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-30_e63892399f81209154c1fbd26dde807d_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:6008

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-461973139-3212354679-1508698038-1000\desktop.ini.tmp
        • Size 365KB
        • SHA256 8a8aa69a8697dd3c94c31f2ad4ef5e511670da05189f1950ebc67af53a28dd12
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 464KB
        • SHA256 c571790689cc11881932dc3fa152085d17647d531b6258c38b5a818465a3b5d0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/6008-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/6008-404-0x0000000000400000-0x000000000040A000-memory.dmp