Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    15/08/2026, 17:52

General

  • Target
    2026-08-15_9909439d540dbd0065aba8eacc90b914_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260815-wf2sdaeq2s
  • SHA256 054877844fb840d837080ade30dea17c5203b0a638179ed06cd685e33cc31ce8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 3 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\2026-08-15_9909439d540dbd0065aba8eacc90b914_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-15_9909439d540dbd0065aba8eacc90b914_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1132

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 327KB
        • SHA256 b42511738e6384033d1da97da3988ce0e85c0b39b63e6b8a2bb7b00dbbb1a76e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX9796.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX9796.tmp
        • Size 284KB
        • SHA256 58981fa0a476c421e5900ee6bc3957672e404ccdbdc171cdcc243a4831891f41
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX99C3.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX99C3.tmp
        • Size 284KB
        • SHA256 220ae48b3b4ab7c70866a935374ffae8a0612097fba773f6e342c581083c5287
        • MD5 SHA1 SHA512 SSDEEP TLSH