Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    24-12-2024 07:44

General

  • Target

    b9d5d19d5032dfbb4c7818bd2296c174291263097f2b9617b6f4079fe98fd8b7.exe

  • Size

    12.0MB

  • MD5

    34fe0ccfcfd07d57c37a86f781fe7025

  • SHA1

    0da7aa3ecf9a42ce86b54094475451d370cadd43

  • SHA256

    b9d5d19d5032dfbb4c7818bd2296c174291263097f2b9617b6f4079fe98fd8b7

  • SHA512

    a97aea7d4e81fda0d848275dae598a8039bcc621248cde7f5f3a84b7ae70de674f9fdc0af1b7da30338acfb5c84892a227f486f8d809e09aa2de8b049ae4864a

  • SSDEEP

    196608:avSCg5aduB2ZoQ64Nkid38GHb65Q5ySeBZObIzLd6/8Nad4OzlUS6FRIb93WenpA:agcEQ3dvQQISeBdzpc8Nat2MZ3WYtL8

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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 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 15 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 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b9d5d19d5032dfbb4c7818bd2296c174291263097f2b9617b6f4079fe98fd8b7.exe
    "C:\Users\Admin\AppData\Local\Temp\b9d5d19d5032dfbb4c7818bd2296c174291263097f2b9617b6f4079fe98fd8b7.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
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\Windows\system32\cmd.exe
      cmd.exe /c set
      2⤵
        PID:2440
      • C:\Users\Admin\AppData\Local\Temp\~2985105129904365267~\sg.tmp
        7zG_exe x "C:\Users\Admin\AppData\Local\Temp\b9d5d19d5032dfbb4c7818bd2296c174291263097f2b9617b6f4079fe98fd8b7.exe" -y -aoa -o"C:\Users\Admin\AppData\Local\Temp\~4800740863079174678"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2308
      • C:\Users\Admin\AppData\Local\Temp\~4800740863079174678\다운로드.exe
        "C:\Users\Admin\AppData\Local\Temp\~4800740863079174678\다운로드.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2844

    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

    • C:\Users\Admin\AppData\Local\Temp\~4800740863079174678\Helper.ocx

      Filesize

      5.4MB

      MD5

      a91c2acb7657c04a10e47ed8dc6b28bf

      SHA1

      d38713819eab61488abdd9cb4653b6a7ef313aa9

      SHA256

      545cf5f0f8e438913eb40d3b561610c6c5e9e1c696452bf0f5f91677c044beb5

      SHA512

      cd3ab9c48a7e15d68a1e0edb5c345a1f01596b19d769e993509f1d131ac5ac14db4ae485fc1089509e7057a4d27a2113d3e6b9bd8278ce07a1ff8472b755a554

    • C:\Users\Admin\AppData\Local\Temp\~4800740863079174678\다운로드.exe

      Filesize

      9.2MB

      MD5

      5a170e76e1d172529039d907d6b2a860

      SHA1

      81df6750bd39609e8cae965c21c7a53953f53470

      SHA256

      2570cd883c8514506e97fb0bcde177eed5d8196688573d17b39aecbaa5ec1dac

      SHA512

      cf25b7929a3b1058fc2514a03d5021a4503749138d09c1f9fcba0cfd50642eb5cf1bba908e16a09003ef57fe9e8f44658b6938e48b7be9be6ff3aeaa600938be

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

      Filesize

      67KB

      MD5

      7574cf2c64f35161ab1292e2f532aabf

      SHA1

      14ba3fa927a06224dfe587014299e834def4644f

      SHA256

      de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

      SHA512

      4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

    • \Users\Admin\AppData\Local\Temp\~2985105129904365267~\sg.tmp

      Filesize

      715KB

      MD5

      7c4718943bd3f66ebdb47ccca72c7b1e

      SHA1

      f9edfaa7adb8fa528b2e61b2b251f18da10a6969

      SHA256

      4cc32d00338fc7b206a7c052297acf9ac304ae7de9d61a2475a116959c1524fc

      SHA512

      e18c40d646fa4948f90f7471da55489df431f255041ebb6dcef86346f91078c9b27894e27216a4b2fe2a1c5e501c7953c77893cf696930123d28a322d49e1516

    • memory/2308-16-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/2308-21-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/2844-29-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/2844-52-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-48-0x0000000000400000-0x0000000000613000-memory.dmp

      Filesize

      2.1MB

    • memory/3068-49-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-51-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-4-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-56-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-61-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-66-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-1-0x0000000000400000-0x0000000000613000-memory.dmp

      Filesize

      2.1MB

    • memory/3068-71-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB

    • memory/3068-76-0x0000000010000000-0x0000000010030000-memory.dmp

      Filesize

      192KB