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
    02/11/2026, 09:10

General

  • Target
    2026-11-01_c5f9a358683ef794c7104ecd48aade37_elex_rhadamanthys_smoke-loader.exe
  • Size 345KB
  • Sample261102-k49bksef48
  • SHA256 78d7df1017a15f92f14f4cb5af8cea9d63b4f60fcc825ad2ca9656586f48790f
  • 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\2026-11-01_c5f9a358683ef794c7104ecd48aade37_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-01_c5f9a358683ef794c7104ecd48aade37_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4104

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 38c5ad700ddc4d8d1e19844464765d8c3296caf4fdb7eba39c07527150f43c44
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX37B9.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX37B9.tmp
        • Size 288KB
        • SHA256 ee8c56d1660eae52775080a1b6d6218974f8d16d7ba309774b8f9457ccacf1eb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX37C9.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX37C9.tmp
        • Size 288KB
        • SHA256 f26d79dc11de3a9c5f91623e3ec1706f7618353684d53cb88c6f806b4e5a91dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX3689.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX3689.tmp
        • Size 288KB
        • SHA256 411c2e781a27b126ce7459def6137f508cfe2eac816f8fce9054077b7305a44e
        • MD5 SHA1 SHA512 SSDEEP TLSH