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Analysis

  • max time kernel
    95s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2024, 09:00

General

  • Target

    71f9d5474aa3aa3b4992ead5e39ed96e05e0137fd589de129dd0ce70656f130bN.dll

  • Size

    162KB

  • MD5

    68f413eff2de45dbc8cffe9c001e59e0

  • SHA1

    292902372361338ce0b3f0835abf7bebac3cdee5

  • SHA256

    71f9d5474aa3aa3b4992ead5e39ed96e05e0137fd589de129dd0ce70656f130b

  • SHA512

    1baf3dbb1324635c4af2c73ff82f299dab1117c3bfbc59c6dea4bbb6024886290fe387c3d1706aba4caa4df534988fe18198c2bd26e365182f094abcace35d13

  • SSDEEP

    3072:OisgQjKaP+plTXszzyqA8XwxFJ2D2lQBV+UdE+rECWp7hKUd2k:OuOmpuzOqA8g0HBV+UdvrEFp7hKUdr

Malware Config

Signatures

  • Floxif family
  • Floxif, Floodfix

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

  • Detects Floxif payload 1 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.

  • 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.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\71f9d5474aa3aa3b4992ead5e39ed96e05e0137fd589de129dd0ce70656f130bN.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\71f9d5474aa3aa3b4992ead5e39ed96e05e0137fd589de129dd0ce70656f130bN.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 716
        3⤵
        • Program crash
        PID:3284
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 768
        3⤵
        • Program crash
        PID:4236
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2040 -ip 2040
    1⤵
      PID:2064
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2040 -ip 2040
      1⤵
        PID:3468

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\Common Files\System\symsrv.dll

        Filesize

        67KB

        MD5

        7574cf2c64f35161ab1292e2f532aabf

        SHA1

        14ba3fa927a06224dfe587014299e834def4644f

        SHA256

        de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

        SHA512

        4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

      • memory/2040-4-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/2040-8-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/2040-6-0x0000000074CD0000-0x0000000074CE5000-memory.dmp

        Filesize

        84KB