Overview

overview

10

Static

static

3

2026-11-10...op.exe

windows10-2004-x64

10

2026-11-10...op.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/11/2026, 06:36

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General

  • Target
    2026-11-10_8a31b64f415f97adc71997e2532fc857_amadey_elex_floxif_redline-stealer_rhadamanthys_smoke-loader_stop.exe
  • Size 258KB
  • Sample261110-hdbarade44
  • SHA256 b478feaa0baab1630f7d7a8af6f7b70f2741bff64ef3cc0e1df3847d5af606e8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoordefense_evasiondiscoveryfloxiftrojanupx

Malware Config

Signatures

  • Family: Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

    backdoortrojanfloxif
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    defense_evasion
  • Modifies visibility of hidden/system files in Explorer 2 TTPs 1 IoCs
    defense_evasion
  • Detects Floxif payload 1 IoCs
    backdoor
  • Custom signature
    UPX dump on OEP (original entry point) 3 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Network Service Discovery 1 TTPs 8 IoCs

    Attempt to gather information on host's network.

    discovery
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies registry class 9 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-10_8a31b64f415f97adc71997e2532fc857_amadey_elex_floxif_redline-stealer_rhadamanthys_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-10_8a31b64f415f97adc71997e2532fc857_amadey_elex_floxif_redline-stealer_rhadamanthys_smoke-loader_stop.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Modifies visibility of hidden/system files in Explorer
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5592
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4624
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 00-67-df-69-5e-d8
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4188
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 ac-82-9b-9f-e9-d5
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1504
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 b4-1d-12-65-38-40
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3912
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 b2-44-67-88-85-f7
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4324
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 c0-59-8d-3e-04-0b
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1976
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 59-50-b7-83-95-58
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4764
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 4e-87-3b-4c-8b-6f
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1100
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:5340
    • C:\Users\Admin\AppData\Local\Temp\yuwgn.sys
      C:\Users\Admin\AppData\Local\Temp\yuwgn.sys
      1⤵
      • Executes dropped EXE
      PID:6056

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads

          symsrv.dll
          • Path C:\Program Files\Common Files\System\symsrv.dll
          • Size 71KB
          • SHA256 8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          yuwgn.sys
          • Path C:\Users\Admin\AppData\Local\Temp\yuwgn.sys
          • Size 3KB
          • SHA256 2938226173a61785b352550f1b6974591b3370c52b1210ddddefca7c1e1d55de
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/5592-0-0x0000000000820000-0x000000000083C000-memory.dmp
          Download

          memory/5592-5-0x0000000010000000-0x0000000010033000-memory.dmp
          Download

          memory/5592-9-0x0000000000821000-0x0000000000822000-memory.dmp
          Download

          memory/5592-12-0x0000000010000000-0x0000000010033000-memory.dmp
          Download

          memory/5592-13-0x0000000000820000-0x000000000083C000-memory.dmp
          Download