Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 17:12

General

  • Target
    2026-08-10_a63986042e271671200d9df98829f5f2_coinminer_elex_wannacry.exe
  • Size 96KB
  • Sample260810-vqyysstemc
  • SHA256 4670250c863a66a6386cb6b1066b4b5aef3a07ff7d39697b720eb199d66b9c52
  • 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 (4277) 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\2026-08-10_a63986042e271671200d9df98829f5f2_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-10_a63986042e271671200d9df98829f5f2_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4376

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2246396966-3025826688-3847171515-1000\desktop.ini.tmp
        • Size 96KB
        • SHA256 4292dd876bcf502b04bd344b939dfd0c415c9cbfc450b689898ab9a32a2b36b8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 195KB
        • SHA256 45fcace9c26f263cec0f26514e2667fc647559c4437a78c15d01098a9703cf0d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4376-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/4376-551-0x0000000000400000-0x000000000040B000-memory.dmp