Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/08/2026, 05:42

General

  • Target
    2026-08-02_9c2e86f4d2abada364085c855a72244a_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample260802-gef2ystwew
  • SHA256 f563a3dae123b9ea4d155cb33c66773fd047d86420766b720333cdc5dfcaf951
  • 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\2026-08-02_9c2e86f4d2abada364085c855a72244a_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-02_9c2e86f4d2abada364085c855a72244a_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2820

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 339KB
        • SHA256 4bea37023ca3492b1f7a8e6cf87bc4d5c9daa88de038a6b72d5845d4cc5457bb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXFC12.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXFC12.tmp
        • Size 288KB
        • SHA256 2180cfc65d8355bf68dc07b15c3202c05e50347890e8b709b7709cb9ce6577cc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXFD35.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXFD35.tmp
        • Size 288KB
        • SHA256 ab97ec5168d67ade767964e9b4f568f77152244b1d6d8e2b13410bc1a02def7b
        • MD5 SHA1 SHA512 SSDEEP TLSH