Analysis

  • max time kernel
    148s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/10/2026, 15:15

General

  • Target
    2026-10-19_7e91a6d37e65ba9d93519db467ca5da9_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample261020-sm1bcacb24
  • SHA256 0c722fe77b47c9e93dab341b015e83c47fd8cfb75faf295e636cb1b1b5ee47a0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 5 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\2026-10-19_7e91a6d37e65ba9d93519db467ca5da9_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-19_7e91a6d37e65ba9d93519db467ca5da9_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1004

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 323KB
        • SHA256 59a2b7a4e5ceb465507413f8bf0b41c3ca368e280d008cfd4b505a1d12853b9e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX58D.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX58D.tmp
        • Size 284KB
        • SHA256 81d36e5eb8cad4096206d404ea94211ef32e24e532e19f00f5ba5047f57f6865
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX59E.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX59E.tmp
        • Size 284KB
        • SHA256 37092b12b8d67bc2629fcb929504cb9e90b3cae9ccec7a64478f34907e60a781
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX47D.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX47D.tmp
        • Size 284KB
        • SHA256 dd6d6500c09d2586c2d1d793217b7bde38f864bb8e52e06172ad76f2fe565e81
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 323KB
        • SHA256 49efea0616b71f3b94e578398895a61efca52d93092ae9542e06088b86818e4a
        • MD5 SHA1 SHA512 SSDEEP TLSH