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
    16/08/2026, 14:41

General

  • Target
    2026-08-16_413b5e357a0bbe9ca158861d9df58397_coinminer_elex_wannacry.exe
  • Size 65KB
  • Sample260816-r2sdlsdj4v
  • SHA256 f1dc8e60a5735f7858e300c996f60c44ce321ffae6ae7a9eba8a515bc8e972a0
  • 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 (4333) 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\2026-08-16_413b5e357a0bbe9ca158861d9df58397_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-16_413b5e357a0bbe9ca158861d9df58397_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5928

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-3986082593-3624157295-3514260330-1000\desktop.ini.tmp
        • Size 66KB
        • SHA256 fc9f2e720912d15567ef69a304a35285d7b0becbfb1569173a5519f0a3918935
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 165KB
        • SHA256 8317aa58f5dcd242bcda13dcd1b1ffedf254bf52782a00e1a9c90f98aef250b8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5928-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/5928-554-0x0000000000400000-0x000000000040B000-memory.dmp