Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    13/08/2026, 15:00

General

  • Target
    2026-08-13_a87ee48efb3c2364fdf9e58d6c727e78_agent-tesla_backswap_elex_floxif_stop.exe
  • Size 828KB
  • Sample260813-sdnwysself
  • SHA256 9de92354508edd34509daa7a3285662ca4a3f7293c85b3dcdd49d1202d168ea5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • 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 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 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 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-13_a87ee48efb3c2364fdf9e58d6c727e78_agent-tesla_backswap_elex_floxif_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-13_a87ee48efb3c2364fdf9e58d6c727e78_agent-tesla_backswap_elex_floxif_stop.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    PID:2688

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

        symsrv.dll.000

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

        2026-08-13_a87ee48efb3c2364fdf9e58d6c727e78_agent-tesla_backswap_elex_floxif_stop.ini

        • Path C:\Users\Admin\AppData\Local\Temp\2026-08-13_a87ee48efb3c2364fdf9e58d6c727e78_agent-tesla_backswap_elex_floxif_stop.ini
        • Size 2KB
        • SHA256 98f070a65f918815bf2673b154fd09f408d0bdbb387227731f7364c859eaf956
        • MD5 SHA1 SHA512 TLSH

        15E4D5CA80.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\15E4D5CA80.tmp
        • Size 751KB
        • SHA256 7d8f35945c17c54056d4aaca05c14bd45640a8c9d1d38f646ae06a8b9cb0c117
        • MD5 SHA1 SHA512 SSDEEP TLSH

        yksremjt.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\yksremjt.tmp
        • Size 24KB
        • SHA256 25c2327760cb20441b8523033b5aae914d76efebddb78798b80bea5f6ee97f41
        • MD5 SHA1 SHA512 SSDEEP

        memory/2688-89-0x0000000076E30000-0x0000000076E93000-memory.dmp

        memory/2688-87-0x0000000076E45000-0x0000000076E46000-memory.dmp

        memory/2688-90-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/2688-92-0x0000000076E30000-0x0000000076E93000-memory.dmp

        memory/2688-94-0x0000000076E30000-0x0000000076E93000-memory.dmp

        memory/2688-4-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/2688-97-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/2688-99-0x0000000010000000-0x0000000010030000-memory.dmp