Overview

overview

10

Static

static

5

2026-10-22...op.exe

windows10-2004-x64

10

2026-10-22...op.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/10/2026, 06:10

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General

  • Target
    2026-10-22_858f43cd2b5f7c0ad4c4de2a5260512d_elex_floxif_stop.exe
  • Size 4.7MB
  • Sample261024-gxddsags5w
  • SHA256 0b768ce4ed1f160f77ae4ba4ffe2996c729109b2026d6ae917516c77ca8b473a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoorbootkitdiscoveryfloxifpersistencetrojanupx

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
  • UPX dump on OEP (original entry point) 5 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 3 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • UPX packed file 5 IoCs

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

    upx
  • Drops file in Program Files directory 2 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • 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 behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-22_858f43cd2b5f7c0ad4c4de2a5260512d_elex_floxif_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-22_858f43cd2b5f7c0ad4c4de2a5260512d_elex_floxif_stop.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Maps connected drives based on registry
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4236

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

        symsrv.dll.000
        • Path C:\Program Files\Common Files\System\symsrv.dll.000
        • Size 114B
        • SHA256 aefc503b1ed462d7b6280228a7b5b710792273b78934426f88325341ac5b5a92
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        7DF015D4108C.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\7DF015D4108C.tmp
        • Size 4.6MB
        • SHA256 7c1f95526dec3cd6d31b8cd45ba5a0c59a4a2afc9e54ab4083787dd4da071f4d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4236-4-0x0000000010000000-0x0000000010030000-memory.dmp
        Download

        memory/4236-20-0x0000000010000000-0x0000000010030000-memory.dmp
        Download

        memory/4236-23-0x0000000010000000-0x0000000010030000-memory.dmp
        Download

        memory/4236-26-0x0000000010000000-0x0000000010030000-memory.dmp
        Download