Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/09/2024, 07:57

General

  • Target
    985ed5f2c06b8e5059da6e875b337270N.dll
  • Size 989KB
  • Sample240906-js9mjavglc
  • SHA256 3d0bf411eff0c512f6444e5dc2f7d604c8ccdf79795dd0d811d99a547d8d4d45
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • 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 2 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in Program Files directory 1 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\985ed5f2c06b8e5059da6e875b337270N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4340
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\985ed5f2c06b8e5059da6e875b337270N.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4936

Network

        MITRE ATT&CK Enterprise v15

        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

        memory/4936-7-0x00000000027B0000-0x00000000027E0000-memory.dmp

        memory/4936-6-0x00000000027B0000-0x00000000027E0000-memory.dmp

        memory/4936-8-0x0000000010001000-0x0000000010002000-memory.dmp

        memory/4936-9-0x0000000010000000-0x00000000100E9000-memory.dmp

        memory/4936-10-0x00000000027B0000-0x00000000027E0000-memory.dmp