Analysis

  • max time kernel
    105s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-08-2024 21:12

General

  • Target

    e816297005306d6552171c37cb30b830N.dll

  • Size

    1.7MB

  • MD5

    e816297005306d6552171c37cb30b830

  • SHA1

    817e0f414317aba62f22813c8def0f02c9a4316c

  • SHA256

    35551ef819ecc4815060fff9ca916c9b5bfae5c7a8680878a207ba348d0830cf

  • SHA512

    5e5a27e91f65bb52d647ee33fac47fc944adeb5ae86ae157cf40d5d962be52caf3ff7a11912ec7824010a9bd85050388839bf98f2123618d2beec5d95a5b4367

  • SSDEEP

    24576:z2o6ffPI+fCYYN6E7KVocLt++flHnR9TPbK6OrEH7y:zv1YYNfKyc3flHnR9TPbK6I

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 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\e816297005306d6552171c37cb30b830N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2436
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\e816297005306d6552171c37cb30b830N.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:3088
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3088 -s 752
        3⤵
        • Program crash
        PID:4544
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3088 -s 760
        3⤵
        • Program crash
        PID:2716
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3088 -ip 3088
    1⤵
      PID:3772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3088 -ip 3088
      1⤵
        PID:708

      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/3088-4-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/3088-8-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/3088-6-0x0000000074C60000-0x0000000074E11000-memory.dmp

        Filesize

        1.7MB