Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/08/2026, 17:06

General

  • Target
    2026-08-10_d661e01c461d52ddc38a06e137b2ad2c_elex_wannacry.exe
  • Size 5.0MB
  • Sample260810-vmjppsdn8s
  • SHA256 a5f9520e8ec825a9355d93cadab84d0ad65e708d8a75e96c2545357728ca67b5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 2 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (543) 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\2026-08-10_d661e01c461d52ddc38a06e137b2ad2c_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-10_d661e01c461d52ddc38a06e137b2ad2c_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1504

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1074038928-2032447174-945360078-1000\desktop.ini.tmp
        • Size 5.0MB
        • SHA256 8af360b992addfa85f9c8c0146b631bd4f8aca00112618ec2bb7207c79345e75
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 5.1MB
        • SHA256 bd6f8981290ee8f8ffbff9ff6e85ab9235175b46eb6e05ef3c8a9ea1749ff36a
        • MD5 SHA1 SHA512 SSDEEP TLSH