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
    24/10/2026, 07:11

General

  • Target
    2026-10-22_7fbf2514e2e310de5406651ceedf3108_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample261024-hz529aee29
  • SHA256 9bcd4c6a022eb20dba1852c1596e907ea4b02d429b5e61a0893926ac3137848a
  • 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\2026-10-22_7fbf2514e2e310de5406651ceedf3108_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-22_7fbf2514e2e310de5406651ceedf3108_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3944

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 324KB
        • SHA256 da49a931f543e117b9fc3adbe2977c94db71e7b5d4e2348a06f74eb55ba1d870
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX5B1F.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX5B1F.tmp
        • Size 284KB
        • SHA256 d34906d1e8fd472a739ab92e57e7067e13f0165833ca45814575ecc788a3069f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX5B20.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX5B20.tmp
        • Size 284KB
        • SHA256 8089d2be11b4a71368f080cc0738f474449223b8489bfbb425484935b9e45158
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX5A00.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX5A00.tmp
        • Size 284KB
        • SHA256 c961b1f2c067198f92dc767f272f2ea99a48a45600ae80f4b88f0586c9907c29
        • MD5 SHA1 SHA512 SSDEEP TLSH