Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31-01-2025 11:32

General

  • Target

    2025-01-31_aced96f38948fc4c236e789fbb0045f4_bkransomware_floxif.exe

  • Size

    4.7MB

  • MD5

    aced96f38948fc4c236e789fbb0045f4

  • SHA1

    1b98777502055cf7b4dd6f96409640af4049b4cb

  • SHA256

    885fc5280f538a0ee8ad753071251c8118064955de766720090f42d44c0df63e

  • SHA512

    91896aff17c19db8ae2bfef1f117851dc595b5be45b7b5a63d2e9538b3ea9831acda08efc4ac5a0f581a7baf9388ccc9a1f6e0dc6b500185f050d28c142cde33

  • SSDEEP

    98304:kBe40bl9dSPenSX5gSoCb0DHDB1dE46V3u/1:h3Qenqb8L/1

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
  • 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.

  • Drops file in Program Files directory 1 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-01-31_aced96f38948fc4c236e789fbb0045f4_bkransomware_floxif.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-31_aced96f38948fc4c236e789fbb0045f4_bkransomware_floxif.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • memory/2408-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2408-7-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2408-5-0x0000000000C40000-0x0000000001101000-memory.dmp

    Filesize

    4.8MB