Analysis

  • max time kernel
    148s
  • max time network
    110s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/09/2026, 11:10

General

  • Target
    2026-09-11_3d0d1705a43fbf14282ea343e5106faa_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260912-m9pkgaxwhv
  • SHA256 55a4b9f72dfa15a394a9efd8885e44347cd4f75ba9a52eac920c33757587926b
  • 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\2026-09-11_3d0d1705a43fbf14282ea343e5106faa_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-11_3d0d1705a43fbf14282ea343e5106faa_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5676

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 a3209c320473842e406269bacc7d3d92a75ee6f79a3617f7b7dbb604abecd1f9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX6AC9.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX6AC9.tmp
        • Size 284KB
        • SHA256 8d676d996c84b5a956edf0b84d149bd355cbac972f2a505a62f88c9a579fb811
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX6C0C.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCX6C0C.tmp
        • Size 284KB
        • SHA256 921eaf32b51861c73e139210cda928a289de4dd83db3503bf8f87f67b5c5b20a
        • MD5 SHA1 SHA512 SSDEEP TLSH