Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/07/2026, 21:02

General

  • Target
    2026-07-29_331178fb446472242adcac35a30c865c_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260729-zvpyxafr21
  • SHA256 9b8b917521b8435df3fd81dcfba0198b80655c2c23520c961bedc86a656ab648
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

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++.

  • Enumerates connected drives 3 TTPs 10 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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\2026-07-29_331178fb446472242adcac35a30c865c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-29_331178fb446472242adcac35a30c865c_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3052

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 337KB
        • SHA256 2c42ea83261d9acf624310085f2717d83ff8e4a286aec2d295b9ada89c01a97a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7zFM.exe

        • Path C:\Program Files\7-Zip\7zFM.exe
        • Size 337KB
        • SHA256 cd6caf4656fff5ced3507b529a702b11b1da56d48f4ba4e87554d107a240b02e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX4CA3.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX4CA3.tmp
        • Size 284KB
        • SHA256 9a7f2cb558b2a4509aa90e642001930b26559e9a8a8e924e4bf61166b416bf36
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX4DF5.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX4DF5.tmp
        • Size 284KB
        • SHA256 bc1f3dab0b193e0702a7770eab2fc289c73d45b424f4c5709c41c4175a222065
        • MD5 SHA1 SHA512 SSDEEP TLSH