Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    27/05/2026, 15:01

General

  • Target
    2026-05-27_6818cd765aea9a4fc041dcd66aed1ccd_amadey_elex_floxif_redline-stealer_rhadamanthys_smoke-loader_stop.exe
  • Size 258KB
  • Sample260527-sd6f1aaz71
  • SHA256 4fa6fb59219dab94f8322a08956e5156c6f42d376f923fe2979a1300cf6a269c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Floxif, Floodfix

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

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visibility of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Detects Floxif payload 1 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Network Service Discovery 1 TTPs 8 IoCs

    Attempt to gather information on host's network.

  • UPX packed file 5 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-27_6818cd765aea9a4fc041dcd66aed1ccd_amadey_elex_floxif_redline-stealer_rhadamanthys_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-27_6818cd765aea9a4fc041dcd66aed1ccd_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
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4784
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2704
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 25-21-60-c6-12-ab
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2416
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 83-af-2c-00-ee-72
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2092
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 51-a8-c1-8c-7c-9d
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3504
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 bf-0e-6d-a7-54-6a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4852
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 d2-20-5b-f4-02-a2
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2384
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 97-ce-95-53-9c-e6
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2180
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 b2-02-c1-c9-9b-90
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1800
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3144
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2828
    • C:\Users\Admin\AppData\Local\Temp\tkumo.sys
      C:\Users\Admin\AppData\Local\Temp\tkumo.sys
      1⤵
      • Executes dropped EXE
      PID:2484
    • C:\Users\Admin\AppData\Local\Temp\lnacl.sys
      C:\Users\Admin\AppData\Local\Temp\lnacl.sys
      1⤵
      • Executes dropped EXE
      PID:2912

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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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

          249AE8812B0.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\249AE8812B0.tmp
          • Size 178KB
          • SHA256 cf8558adfabee766f9807fc6c197b74683fb7d8986d16fdceed286eb30ba9843
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tkumo.sys

          • Path C:\Users\Admin\AppData\Local\Temp\tkumo.sys
          • Size 3KB
          • SHA256 de4220178a3392a6e62a2361b06c49d44d5e75ab22d6b156d35978495710f181
          • MD5 SHA1 SHA512 TLSH

          memory/4784-0-0x0000000000BA0000-0x0000000000BBC000-memory.dmp

          memory/4784-5-0x0000000010000000-0x0000000010033000-memory.dmp

          memory/4784-13-0x0000000000BA1000-0x0000000000BA2000-memory.dmp

          memory/4784-18-0x0000000010000000-0x0000000010033000-memory.dmp

          memory/4784-19-0x0000000000BA0000-0x0000000000BBC000-memory.dmp

          memory/4784-20-0x0000000010000000-0x0000000010033000-memory.dmp

          memory/4784-24-0x0000000010000000-0x0000000010033000-memory.dmp