Analysis

  • max time kernel
    93s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-09-2024 12:37

General

  • Target

    2024-09-05_cd3455a2f8f2413660bb47bbe9fdfc5a_bkransomware_floxif.exe

  • Size

    2.1MB

  • MD5

    cd3455a2f8f2413660bb47bbe9fdfc5a

  • SHA1

    83d805763714ade70cc52f62a0c36693715b3e0a

  • SHA256

    9488ef0cbaa433e6d3b4e43267ec8bc7ecaf16588a059930e9498489ddd4a2d4

  • SHA512

    61a3221e5e54ef7143585540a4ee2b038da3e7347bcb73cc467f80328689d6f4e12972febe404784f98aa11bb235be0df4b12b425d03494a776d1d0b86860262

  • SSDEEP

    49152:/ofqq2msxBMWSxRio/D4UQGJ6+Y59N2153eqPk4utu+NNAVw6rPYVA:gCq2R3MWSxN/MvGJrYx2r31Pk4utCV6A

Malware Config

Signatures

  • Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • 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.

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Drops file in Program Files directory 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-05_cd3455a2f8f2413660bb47bbe9fdfc5a_bkransomware_floxif.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-05_cd3455a2f8f2413660bb47bbe9fdfc5a_bkransomware_floxif.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 SetWindowsHookEx
    PID:2448

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/2448-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2448-15-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2448-13-0x0000000000610000-0x0000000000825000-memory.dmp

    Filesize

    2.1MB