Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/10/2026, 12:49

General

  • Target
    2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe
  • Size 841KB
  • Sample261003-p2vsmayfla
  • SHA256 a9b33d6e8235316a49e56760dc59b49eacaf3fc79332600474dc910b2ffe66ff
  • 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 security service 2 TTPs 1 IoCs
  • Detects Floxif payload 1 IoCs
  • UPX dump on OEP (original entry point) 7 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 1 IoCs

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

  • UPX packed file 7 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).

  • 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.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe"
    1⤵
    • Modifies security service
    • Loads dropped DLL
    • Enumerates connected drives
    • 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 behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    PID:4104

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        symsrv.dll

        • Path C:\Program Files\Common Files\System\symsrv.dll
        • Size 67KB
        • SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
        • MD5 SHA1 SHA512 SSDEEP TLSH

        symsrv.dll.000

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

        2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.ini

        • Path C:\Users\Admin\AppData\Local\Temp\2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.ini
        • Size 2KB
        • SHA256 1325d85351205e241d7ec56f7f5b6b846988fb60c6cb27f6bd10b1b24fd8d2da
        • MD5 SHA1 SHA512 TLSH

        3D8C15681008.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\3D8C15681008.tmp
        • Size 765KB
        • SHA256 48efc1e775c88e01600b049e1e55831fefaea5d624d94892a6efaa632181e2fe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4104-4-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4104-57-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4104-61-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4104-63-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4104-64-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4104-71-0x0000000010000000-0x0000000010030000-memory.dmp