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
    10/10/2026, 10:13

General

  • Target
    2026-10-09_7b5f9e2c0fcb811b22e11aadf7ebfd55_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample261010-l8994stset
  • SHA256 2a6099f18daf445b936589670c850fab6a62c591e53716c5cd2ed04e475f5fd4
  • 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\2026-10-09_7b5f9e2c0fcb811b22e11aadf7ebfd55_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-09_7b5f9e2c0fcb811b22e11aadf7ebfd55_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3864

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 326KB
        • SHA256 e0a7c6e4eb401a30801790295583104a137ebb5eb5d62fec7dcc8547b4dfca21
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXFE74.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXFE74.tmp
        • Size 284KB
        • SHA256 3538879dbf55246877c73a2bcf6109ddad3c790f0e7c6a3b1cb1afd1be3d272d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXFE75.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCXFE75.tmp
        • Size 284KB
        • SHA256 ab08bf648e743e3e03ee02bd7e59d837e82cfa6be675d80efd14f5c1714009a3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXFD73.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCXFD73.tmp
        • Size 284KB
        • SHA256 d7f8aca51748280fe36bd3c843f3ff53a9277cbd1604d0c2aaf103cd58d9476e
        • MD5 SHA1 SHA512 SSDEEP TLSH