Analysis

  • max time kernel
    150s
  • max time network
    131s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/10/2026, 15:02

General

  • Target
    2026-10-28_0d311e1a8220197aa763a5305775fc92_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample261028-sel4ragf58
  • SHA256 b2ccd5588c8c72c480d4d9bb6d6108f79aeba7a960ac02f9678aa576e10fde91
  • 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\2026-10-28_0d311e1a8220197aa763a5305775fc92_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-28_0d311e1a8220197aa763a5305775fc92_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4028

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 332KB
        • SHA256 c7a32605e591f7fd66d763697ef47903799b14e97c5d1a28bd8b100304241ec8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDC2B.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXDC2B.tmp
        • Size 284KB
        • SHA256 2836e8a3a22b6d83a3b31f071175abc085de56e8cb0d74ca196df4a1a0a8f142
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDC3C.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXDC3C.tmp
        • Size 284KB
        • SHA256 52f42bffaac79f83d77523d05dca50486792a4ad851463bac181c438c0a75877
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDB2B.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXDB2B.tmp
        • Size 284KB
        • SHA256 ef9deeeaf7e7ae2726f86d5faa728cef0beef615f1eebd8896ed29a953bb64b1
        • MD5 SHA1 SHA512 SSDEEP TLSH