Analysis

  • max time kernel
    150s
  • max time network
    137s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/07/2026, 20:17

General

  • Target
    2026-07-27_20490cb3c53af2b197458e8997345745_coinminer_elex_wannacry.exe
  • Size 19.0MB
  • Sample260727-y239fadn7z
  • SHA256 ba2c7675e8b8f49f6874d8519ba01beb3ac620ed018b72d35da98ae9ecf8d3ac
  • 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 (158) 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\2026-07-27_20490cb3c53af2b197458e8997345745_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-27_20490cb3c53af2b197458e8997345745_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2956

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1014449518-1831897916-4205727055-1000\desktop.ini.tmp
        • Size 19.0MB
        • SHA256 6c620a1d4deba3be949da46b5373703bcc2018094ab61fffa5f296eeb722a9ee
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 19.1MB
        • SHA256 ba42ef90703118139d423268b03e90b89be74954fd49af104b9fe3cb1b616ff0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2956-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/2956-18-0x0000000000400000-0x000000000040B000-memory.dmp