Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 04:20

General

  • Target
    2026-08-10_97166650563fc4a8cca8b9fd120c3349_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample260810-ex9e4svycx
  • SHA256 feed6297770dec91eb9d85f6dd14aa82697d49b1df9bc94b422723bd806213be
  • 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\2026-08-10_97166650563fc4a8cca8b9fd120c3349_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-10_97166650563fc4a8cca8b9fd120c3349_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4444

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 334KB
        • SHA256 e7b9bad646aec6757bd8b8f55abe87409ccee0214c9b9b8f03420bd56821367b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX4B17.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX4B17.tmp
        • Size 288KB
        • SHA256 790fe032fef5a73fb3856094bda80a5b7f4cf12afbe35904ff1e3a6779616f31
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX4C4B.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX4C4B.tmp
        • Size 288KB
        • SHA256 2dc8512af0c8e4e3cce594c7947ff54f33420b10c2864c30317eaa9d2a4c1aae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 358KB
        • SHA256 60fb45040b512b185995bd1eb004a30c6041b60e717140c6660f6a08da6df745
        • MD5 SHA1 SHA512 SSDEEP TLSH