Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    15/08/2026, 19:09

General

  • Target
    2026-08-15_8a02a78a36420abe9d80f3f8764f66b4_coinminer_elex_wannacry.exe
  • Size 64KB
  • Sample260815-xt4dsssyhw
  • SHA256 dd67e920a49384e50c28c18008f4f6bad1dafd68b66cd27cd1fda8943f609422
  • 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++.

  • Renames multiple (4394) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • UPX dump on OEP (original entry point) 4 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2026-08-15_8a02a78a36420abe9d80f3f8764f66b4_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-15_8a02a78a36420abe9d80f3f8764f66b4_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1148

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1079202589-886135813-2527035092-1000\desktop.ini.tmp
        • Size 64KB
        • SHA256 f62b05b0d939b3416ca8d7d851233ee9067382a9f0f4e538020813c21c2c30f6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 163KB
        • SHA256 3d024c254c0cad16216f4abf2b6d25f39ee70618848bf4e980cfe0ccef14a3fd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1148-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/1148-559-0x0000000000400000-0x000000000040B000-memory.dmp