Analysis

  • max time kernel
    142s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    02-02-2025 19:27

General

  • Target

    2025-02-02_089ba18e92ea40793fa952c00c8c6223_bkransomware_floxif_hijackloader.exe

  • Size

    6.8MB

  • MD5

    089ba18e92ea40793fa952c00c8c6223

  • SHA1

    354248b307863503a550eef99bb5a1166bd616b0

  • SHA256

    e7947f62c01f0fa2ef92bebe73a1ddc163eef89ec7ad231d7e13daf50914afa9

  • SHA512

    2f08f52f96a65864f340f307bf427fe676e5954017340c1fcfc62c6ea4d631bc49016a29921a52d6ad6d01ae78d66591954c4376ef71cb4935a263ec34fdc207

  • SSDEEP

    98304:9kuJz1xn3h6i02uaYmGSGT17L6z6GO9Pcgv5nWfBY8C8fhlH2vef9Ivsb:9Jl3h6i02uaYnSGTF6c9PcuqYmf2Gb

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 3 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • UPX packed file 9 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.

  • Modifies registry class 30 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-02-02_089ba18e92ea40793fa952c00c8c6223_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-02_089ba18e92ea40793fa952c00c8c6223_bkransomware_floxif_hijackloader.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • \Users\Admin\AppData\Local\Temp\A1D26E2\9928D8830.tmp

    Filesize

    6.8MB

    MD5

    e3e17c335176a3b42e36fe2149f03fc9

    SHA1

    0834f657ec67affccd8af7dd18f08108aa8cc9a4

    SHA256

    796c2df5f588660107d9efb6778b5e41e69a457cf3b4a5d74ca85adb13521457

    SHA512

    1a10c9f323de35abc0825d21e49561498b8ed224c309ec5bd9f4836d33be6dc95dfdeeddbf08d02ba32b8a902a812254bf5cde4c264d8ba240dee7c48bac513b

  • memory/2096-97-0x0000000000CF0000-0x0000000001402000-memory.dmp

    Filesize

    7.1MB

  • memory/2096-91-0x0000000000CF0000-0x0000000001402000-memory.dmp

    Filesize

    7.1MB

  • memory/2096-98-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-102-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-93-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-108-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-112-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-116-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2096-128-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB