Analysis

  • max time kernel
    109s
  • max time network
    110s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-08-2024 04:15

General

  • Target

    ab642cb439e31226de27472b577cd120N.dll

  • Size

    148KB

  • MD5

    ab642cb439e31226de27472b577cd120

  • SHA1

    41329104559170a115491e30a42b1eab63bc4f4e

  • SHA256

    188e702f8918005392b816a8010f2a51d0d6469af9773b5e3390134620316b24

  • SHA512

    daad74131784d4bc55a0fe85954f3ded631085a65a3ac692f2f417622d1b2132d4b1558c63373a39450866ef1abd99dcc6e92bf1367502030af4b31b4c70549f

  • SSDEEP

    3072:u26yb3qxQRhuy2lQBV+UdE+rECWp7hKdy:FVb31RhxBV+UdvrEFp7hKM

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
  • Program crash 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\ab642cb439e31226de27472b577cd120N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab642cb439e31226de27472b577cd120N.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4648
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 680
        3⤵
        • Program crash
        PID:1552
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4648 -ip 4648
    1⤵
      PID:1244

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      67KB

      MD5

      7574cf2c64f35161ab1292e2f532aabf

      SHA1

      14ba3fa927a06224dfe587014299e834def4644f

      SHA256

      de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

      SHA512

      4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

    • memory/4648-8-0x0000000010001000-0x0000000010002000-memory.dmp

      Filesize

      4KB

    • memory/4648-7-0x0000000002BC0000-0x0000000002BF0000-memory.dmp

      Filesize

      192KB

    • memory/4648-6-0x0000000002BC0000-0x0000000002BF0000-memory.dmp

      Filesize

      192KB

    • memory/4648-10-0x0000000010000000-0x0000000010015000-memory.dmp

      Filesize

      84KB

    • memory/4648-12-0x0000000002BC0000-0x0000000002BF0000-memory.dmp

      Filesize

      192KB