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
    22/08/2026, 22:33

General

  • Target
    2026-08-22_e2b34c04ce43ea1b3881293aac828b11_elex_wannacry.exe
  • Size 25KB
  • Sample260822-2gp3vsgf55
  • SHA256 d39a9ace20b937cbe7162ea2444de093dbaf7b278d1dfd3fac75dd4acec58cdc
  • 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 (4865) 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\2026-08-22_e2b34c04ce43ea1b3881293aac828b11_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-22_e2b34c04ce43ea1b3881293aac828b11_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2848

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-3986082593-3624157295-3514260330-1000\desktop.ini.tmp
        • Size 25KB
        • SHA256 4423dc1cf79f573c0a6e23dcb35610acb9a07e24f413ddc20612a602272320e0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 124KB
        • SHA256 d7c38acbbf770ee29b0deb9af13228a88175826b08fa870f13e3a1772ca93aac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2848-0-0x0000000000400000-0x0000000000409D5C-memory.dmp

        memory/2848-591-0x0000000000400000-0x0000000000409D5C-memory.dmp