Analysis

  • max time kernel
    149s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/10/2026, 05:07

General

  • Target
    2026-10-05_1cf57c48e1bb9a6ec80000143f4f332a_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample261007-fsf4fady2p
  • SHA256 e44244d85a9234514b856aa5c5850fd9402204bb6ef3775d4514a9025a93c49c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 2 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 21 IoCs
  • Program crash 1 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\2026-10-05_1cf57c48e1bb9a6ec80000143f4f332a_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-05_1cf57c48e1bb9a6ec80000143f4f332a_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1512
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 684
      2⤵
      • Program crash
      PID:3028
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1512 -ip 1512
    1⤵
      PID:1344

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          7z.cab

          • Path C:\Program Files\7-Zip\7z.cab
          • Size 549KB
          • SHA256 707f415d7d581edd9bce99a0429ad4629d3be0316c329e8b9ebd576f7ab50b71
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7z.exe

          • Path C:\Program Files\7-Zip\7z.exe
          • Size 1.5MB
          • SHA256 ed35ff06761ccd3dd660925300445bc41b16564b630997d839ebcb9a463c5c51
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7zFM.cab

          • Path C:\Program Files\7-Zip\7zFM.cab
          • Size 963KB
          • SHA256 028cf2158df45889e9a565c9ce3c6648fb05c286b97f39c33317163e35d6f6be
          • MD5 SHA1 SHA512 SSDEEP TLSH

          RCX9538.tmp

          • Path C:\Program Files\7-Zip\RCX9538.tmp
          • Size 284KB
          • SHA256 a678c9f7607e0229f9905ee36dbece1722ed3ab24382f51b99026d88fca7c770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          appvcleaner.cab

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.cab
          • Size 2.1MB
          • SHA256 7e0976036431640ae1d9f1c0b52bcea5dd37ef86cd3f5304dc8a96459d9483cd
          • MD5 SHA1 SHA512 SSDEEP TLSH