Analysis

  • max time kernel
    148s
  • max time network
    139s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 06:12

General

  • Target
    2026-08-04_975c2167ebfc56d183ea56b16e7438d2_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample260804-gybxcaxwcs
  • SHA256 0e5d7eca40e19942326035dc460a8125072fdc2e7a7641d81679d2dad7229f05
  • 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\2026-08-04_975c2167ebfc56d183ea56b16e7438d2_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_975c2167ebfc56d183ea56b16e7438d2_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1212

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 bca108466881174244b172d4a94f9b4266dd171466dc616b9e48ce5a6bd98fdf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDB8A.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXDB8A.tmp
        • Size 288KB
        • SHA256 53eebdc91980edb341d56e849bde5d13f00182ccc50c29ed4a269b476bf5826c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDD88.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXDD88.tmp
        • Size 288KB
        • SHA256 8940e4b1bfa1d46ec53af12099adebef60a80eb141280b4f8d1afc904645f0b5
        • MD5 SHA1 SHA512 SSDEEP TLSH