Analysis

  • max time kernel
    148s
  • max time network
    124s
  • 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, 04:34

General

  • Target
    2026-10-22_926023afce1f4c6400fc4ac6dcd9b03a_elex_rhadamanthys_smoke-loader.exe
  • Size 296KB
  • Sample261024-e6542sec45
  • SHA256 942055679f57f3966912cc4203deeb02310fca616aa8753a70cef4a152758fee
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 5 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_926023afce1f4c6400fc4ac6dcd9b03a_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-22_926023afce1f4c6400fc4ac6dcd9b03a_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2084

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 330KB
        • SHA256 6d05f6533ac1a5fc3e201170012236f42c5bacffb315161b7cefa2dda018a9ec
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX32B7.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX32B7.tmp
        • Size 288KB
        • SHA256 9ab4eefc79c8e30458f614fbc32914b483e08ef876120939266bd25616b69f17
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX32B8.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX32B8.tmp
        • Size 288KB
        • SHA256 e5c7571ca0a70913608af0d303c4294f686fb667d1a1f5d0dd39832298f9c964
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX3040.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX3040.tmp
        • Size 288KB
        • SHA256 f72b0b68bdd33247f0574193f6ea79f08632a7f471c1e3bd84f987aaeb8dffdc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        default-browser-agent.exe

        • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        • Size 288KB
        • SHA256 a5dead1d27b0cce8ca03be56d6c233c897b874df55495ab3c68cfdaf9a8b899d
        • MD5 SHA1 SHA512 SSDEEP TLSH