Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/10/2026, 04:48

General

  • Target
    2026-10-24_dff8ba6f00f78a678389947da6257d28_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample261025-fffl5sfx2r
  • SHA256 375357239e9f52dbfe88de579dabcd6970116ed1a5ea99add67ffcae91472e5a
  • 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\2026-10-24_dff8ba6f00f78a678389947da6257d28_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-24_dff8ba6f00f78a678389947da6257d28_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3936

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 284KB
        • SHA256 20d32051ed5c701e7c5f8212396c5ce17e0b59854bf428bf0cc7ac26db1765e0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX84FE.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX84FE.tmp
        • Size 284KB
        • SHA256 ea54bc1ae012bda2da4e8836aee28f625986e95767c745e22c89aa269117d2ad
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX850F.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX850F.tmp
        • Size 284KB
        • SHA256 0ae06c0bb4566c3f51dfd178ea59aa0c5a7892bacdfb02b148b2a4181548e111
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX842C.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX842C.tmp
        • Size 284KB
        • SHA256 b3f9c286e06e64a6327c8c90c47ca9a84dcdd3a55cacb3bdb4f52da4a796903d
        • MD5 SHA1 SHA512 SSDEEP TLSH