Analysis

  • max time kernel
    125s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2023 23:03

General

  • Target

    4202894ffe0c73afad4b2d0d59c71c44.exe

  • Size

    36KB

  • MD5

    4202894ffe0c73afad4b2d0d59c71c44

  • SHA1

    9844409fb20fca3332f2dbd16bb1580d4dae47f9

  • SHA256

    9109cf2acaaadd902d8a2b6e4655ae849d53865c6899992f6975fd37a56d8963

  • SHA512

    80501955018260b6ab690acce9f7df0d90455767968b1ccc435c9e087cfb4ff40c4fcd91fdb6d6457bb32649d3fda63435ecd4551141daed8af2448749f2187e

  • SSDEEP

    768:L5uhMogHxJ5CVpm6jFHd+mc+8MfIsVNwDhqpsqc:9FoglCVBjdqz9Nwp0

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Unexpected DNS network traffic destination 10 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe
    "C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe
      C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe
        "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe" DEL:C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2940
        • C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe
          "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2756
          • C:\Program Files (x86)\Microsoft Office\Office14\BCSSync .exe
            "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync .exe" "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"
            5⤵
              PID:2132

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe

      Filesize

      36KB

      MD5

      566ba7eb8d94c2fddd37bf9206c4d42f

      SHA1

      28ebf385ed6a326afe547d1ebd242fafd4439a6f

      SHA256

      7032be33a48079f9ec0e3bbbe3e7a96bc53dfc9a8fab5c60304050ed4e6f854d

      SHA512

      119fce5667b2b02f21026ce5847ee8938b02bee81741fd1ee4b1671b93877bd25fe656d4be6404ce188b3ff9fa8e1dcd542d9cb3c90a31d140bc3629b8d32339

    • memory/1280-0-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-2-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-4-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-10-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-8-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-6-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-12-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-24-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1280-40-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/2756-42-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB