Analysis

  • max time kernel
    149s
  • max time network
    113s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/08/2026, 04:20

General

  • Target
    2026-08-01_26d7d636f4484192e5df2002c4c0ac9e_elex_wannacry.exe
  • Size 25KB
  • Sample260802-ex92msvblg
  • SHA256 53d77f2458141037f8eb9fb873aaa927081d7bb7277331c07edc3491c6c315e3
  • 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 (4552) 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\2026-08-01_26d7d636f4484192e5df2002c4c0ac9e_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-01_26d7d636f4484192e5df2002c4c0ac9e_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3388

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1875162379-3804078649-638427191-1000\desktop.ini.tmp
        • Size 25KB
        • SHA256 03350240cd9c78287bfc31225d5174e9265268ee92b45fa6ec648d353500697a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.exe

        • Path C:\Program Files\7-Zip\7-zip.dll.exe
        • Size 124KB
        • SHA256 9affbd2ad6be8e6ac7e389f7ced11714381b456d1d3d79f02c76097865cc5af3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3388-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/3388-574-0x0000000000400000-0x000000000040A000-memory.dmp