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Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/09/2024, 10:30

General

  • Target

    2024-09-30_bc64976c095fb66a8b7ff82692d46d11_bkransomware_floxif_hijackloader.exe

  • Size

    3.4MB

  • MD5

    bc64976c095fb66a8b7ff82692d46d11

  • SHA1

    d6beb324e6f6058dd4b3902cd907191ce991bfdf

  • SHA256

    2c3d48205a200f13cec47f2b9873f24f07bd41f8884b6713d61d150aa291ad5d

  • SHA512

    61eb7f3fab9bac87e2fc0fa9b045cfe58000bc3798b6c663542766d4fd0185ec174c0caaa0b57a4fe9a9bef7cadd53a50b40beabb86630f7b5f00e8965c95828

  • SSDEEP

    49152:iZi5Wu7I/Bzfz/ZHg1pHtOUYqP3CFOrtG/RR9sXafgkDFMVR9C1UhPJXMK701hOq:iI5Wt/BzfzW1t0xOouBiCV2Hp

Malware Config

Signatures

  • 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 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 6 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.

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-30_bc64976c095fb66a8b7ff82692d46d11_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-30_bc64976c095fb66a8b7ff82692d46d11_bkransomware_floxif_hijackloader.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
    PID:2752

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

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

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

  • C:\Users\Admin\AppData\Local\Temp\Setup\ds.dll

    Filesize

    67KB

    MD5

    7d5d3e2fcfa5ff53f5ae075ed4327b18

    SHA1

    3905104d8f7ba88b3b34f4997f3948b3183953f6

    SHA256

    e1fb95609f2757ce74cb531a5cf59674e411ea0a262b758371d7236c191910c4

    SHA512

    e67683331bb32ea4b2c38405be7f516db6935f883a1e4ae02a1700f5f36462c31b593e07c6fe06d8c0cb1c20c9f40a507c9eae245667c89f989e32765a89f589

  • memory/2752-34-0x000000000A550000-0x000000000A5EC000-memory.dmp

    Filesize

    624KB

  • memory/2752-36-0x000000000B5A0000-0x000000000BACC000-memory.dmp

    Filesize

    5.2MB

  • memory/2752-23-0x00000000093C0000-0x0000000009964000-memory.dmp

    Filesize

    5.6MB

  • memory/2752-24-0x00000000092D0000-0x0000000009362000-memory.dmp

    Filesize

    584KB

  • memory/2752-33-0x000000000A460000-0x000000000A4A4000-memory.dmp

    Filesize

    272KB

  • memory/2752-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2752-35-0x000000000A5F0000-0x000000000A656000-memory.dmp

    Filesize

    408KB

  • memory/2752-21-0x0000000006670000-0x0000000006684000-memory.dmp

    Filesize

    80KB

  • memory/2752-42-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2752-40-0x00000000003C0000-0x0000000000715000-memory.dmp

    Filesize

    3.3MB

  • memory/2752-48-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2752-22-0x00000000736D0000-0x00000000736E4000-memory.dmp

    Filesize

    80KB

  • memory/2752-54-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2752-53-0x00000000003C0000-0x0000000000715000-memory.dmp

    Filesize

    3.3MB

  • memory/2752-66-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB