Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11/11/2024, 12:30

General

  • Target

    2024-11-11_d4d8d97c253668da0a3156954fcaa380_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    d4d8d97c253668da0a3156954fcaa380

  • SHA1

    c4d9d6d3ddf675d0899ba7abad8e6f7c34cd756a

  • SHA256

    704f980fd23351d44ff8751a6fa161caf409639f6a46fac0e261e6b606967cfb

  • SHA512

    8a54a5dfca3c8bb0e21ba2ad3d5cbe425a40c9bddef1ba59daec6b5b9807c864c9ae59252e0a1b958bc5210a372494bee08383e24484fdd46e0e972e2737bf08

  • SSDEEP

    98304:8TatQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZODByQNdXCd00:86t30t0u/Zk28XCd0LWkVgeXSL

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 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-11_d4d8d97c253668da0a3156954fcaa380_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-11_d4d8d97c253668da0a3156954fcaa380_bkransomware_floxif_hijackloader.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:2676

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\A1D26E2\A1CB95CA74.tmp

          Filesize

          14.3MB

          MD5

          7740b91aa5877cd86117db93dc5b0426

          SHA1

          b02a401b86aaa41768a15e4f027dccb812341fb7

          SHA256

          44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

          SHA512

          88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

        • C:\Users\Admin\AppData\Local\Temp\CabA508.tmp

          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

        • C:\Users\Admin\AppData\Local\Temp\TarA624.tmp

          Filesize

          181KB

          MD5

          4ea6026cf93ec6338144661bf1202cd1

          SHA1

          a1dec9044f750ad887935a01430bf49322fbdcb7

          SHA256

          8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

          SHA512

          6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

          Filesize

          67KB

          MD5

          7574cf2c64f35161ab1292e2f532aabf

          SHA1

          14ba3fa927a06224dfe587014299e834def4644f

          SHA256

          de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

          SHA512

          4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

        • memory/2676-3-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2676-83-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2676-82-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2676-81-0x0000000000900000-0x0000000001774000-memory.dmp

          Filesize

          14.5MB

        • memory/2676-87-0x0000000010000000-0x0000000010030000-memory.dmp

          Filesize

          192KB

        • memory/2676-85-0x0000000000900000-0x0000000001774000-memory.dmp

          Filesize

          14.5MB