Overview

overview

10

Static

static

3

2026-05-11...er.exe

windows10-2004-x64

10

2026-05-11...er.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    11/05/2026, 16:24

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General

  • Target
    2026-05-11_9792309f46efe9ac631cb852f104c5fe_amadey_elex_floxif_remcos_smoke-loader.exe
  • Size 732KB
  • Sample260511-twv9esev7z
  • SHA256 285f96b5485757ebdd3d205bb6756b01a99f9f280b1e9b442aa6875215cdb654
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoordiscoveryfloxiftrojanupx

Malware Config

Signatures

  • Family: Floxif, Floodfix

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

    backdoortrojanfloxif
  • 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.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

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

    upx
  • Drops file in Program Files directory 1 IoCs
  • Program crash 2 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.

    discovery
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-11_9792309f46efe9ac631cb852f104c5fe_amadey_elex_floxif_remcos_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-11_9792309f46efe9ac631cb852f104c5fe_amadey_elex_floxif_remcos_smoke-loader.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1872
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 372
      2⤵
      • Program crash
      PID:2016
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 416
      2⤵
      • Program crash
      PID:4400
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1872 -ip 1872
    1⤵
      PID:4888
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1872 -ip 1872
      1⤵
        PID:1576

      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 67KB
            • SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/1872-3-0x0000000010000000-0x0000000010030000-memory.dmp
            Download

            memory/1872-5-0x0000000000D51000-0x0000000000D52000-memory.dmp
            Download

            memory/1872-6-0x0000000000D50000-0x0000000000DF9000-memory.dmp
            Download

            memory/1872-9-0x0000000010000000-0x0000000010030000-memory.dmp
            Download

            memory/1872-7-0x0000000001390000-0x000000000140B000-memory.dmp
            Download