Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-11-2024 12:42

General

  • Target

    2024-11-20_d8efab44ee8888396e9001774bcfabfe_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    d8efab44ee8888396e9001774bcfabfe

  • SHA1

    6d22a7bb86e216be35a0272733e73ba995b3583a

  • SHA256

    2fd8b84d9583c00eabe559aaa2347e657a34ca34c3927fe0ce31959b8d362fdd

  • SHA512

    f7c3dd1a63b12daaedc2c79f56557b288a60f5c3f01b3260395d4424c69aff22b5220db22be67ef02e842dab4e294c94773f1a9ea4771e364b35c0d371332fde

  • SSDEEP

    98304:8TatQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZFDByQNdXCd0I:8it30t0u/Zk2hXCd0LWkVgeXSL

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
  • 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\2024-11-20_d8efab44ee8888396e9001774bcfabfe_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-20_d8efab44ee8888396e9001774bcfabfe_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:1404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\A1D26E2\E56023C57C.tmp

    Filesize

    14.3MB

    MD5

    7740b91aa5877cd86117db93dc5b0426

    SHA1

    b02a401b86aaa41768a15e4f027dccb812341fb7

    SHA256

    44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

    SHA512

    88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

  • C:\Users\Admin\AppData\Local\Temp\Cab21F4.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar2226.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/1404-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1404-45-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1404-43-0x00000000013C0000-0x0000000002234000-memory.dmp

    Filesize

    14.5MB

  • memory/1404-103-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1404-102-0x00000000013C0000-0x0000000002234000-memory.dmp

    Filesize

    14.5MB

  • memory/1404-107-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1404-105-0x00000000013C0000-0x0000000002234000-memory.dmp

    Filesize

    14.5MB