Analysis

  • max time kernel
    116s
  • 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
    01-01-2025 13:22

General

  • Target

    4836c43dbc99c1eee569270eef54cf6b3c1c876f9edc9a0b225b00a8e1358a1cN.exe

  • Size

    1.8MB

  • MD5

    106a823c45bdf59bdad2d0bb3ab47300

  • SHA1

    f233cfbde3b3656928a6702c0897133c2815c988

  • SHA256

    4836c43dbc99c1eee569270eef54cf6b3c1c876f9edc9a0b225b00a8e1358a1c

  • SHA512

    525b4ae4b3422197a20fd3c5406cb72cfdce82cfa795e0c49267f82b0e57887f34493d9ad0d3bce2af10cc94974af39a7fe03af41eb898ff81dabd2f26087022

  • SSDEEP

    49152:eVzyP4BTkT3EApTLi2CCzMn3jzOAhFEyDeaXrdA:eVzyABTbE2S

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
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • UPX packed file 7 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4836c43dbc99c1eee569270eef54cf6b3c1c876f9edc9a0b225b00a8e1358a1cN.exe
    "C:\Users\Admin\AppData\Local\Temp\4836c43dbc99c1eee569270eef54cf6b3c1c876f9edc9a0b225b00a8e1358a1cN.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:4100

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

  • C:\Program Files\Common Files\System\symsrv.dll.000

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

  • memory/4100-17-0x00000000002E0000-0x0000000000495000-memory.dmp

    Filesize

    1.7MB

  • memory/4100-7-0x00000000002E0000-0x0000000000495000-memory.dmp

    Filesize

    1.7MB

  • memory/4100-8-0x00000000002E0000-0x0000000000495000-memory.dmp

    Filesize

    1.7MB

  • memory/4100-16-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4100-6-0x00000000002E1000-0x00000000002E2000-memory.dmp

    Filesize

    4KB

  • memory/4100-19-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4100-20-0x00000000002E0000-0x0000000000495000-memory.dmp

    Filesize

    1.7MB

  • memory/4100-26-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4100-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4100-32-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4100-44-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB