Analysis

  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 08:11

General

  • Target
    2026-08-04_190e2760ad915f2d7277c48b364ffec7_coinminer_elex_wannacry.exe
  • Size 84KB
  • Sample260804-j3ng2sfh49
  • SHA256 aa2279c883cb09aa272b20b3903d9cd6a41677e352feca6908f916d90732e92e
  • 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 (4222) 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\2026-08-04_190e2760ad915f2d7277c48b364ffec7_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_190e2760ad915f2d7277c48b364ffec7_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3676

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-552508041-2681165170-3229858294-1000\desktop.ini.tmp
        • Size 85KB
        • SHA256 33b81a3283fd70fc38fd2f9efa30cb48a8075756924b06cf10be4bb7733b7481
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 183KB
        • SHA256 29aff737783d86a74e3bad56d934d9bf108ef760abb4944a169ae94b5d00e078
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3676-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/3676-519-0x0000000000400000-0x000000000040B000-memory.dmp