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Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22/02/2024, 01:28

General

  • Target

    8a6c016f821b11bd0283465ed242814ea5cedc584b00d303e1aa9b9ee45d220c.rtf

  • Size

    126KB

  • MD5

    3f4addae26c2d7ae8f47c85bd3938b9c

  • SHA1

    5aa3940a293dc22bdfa53b3f746d2fed735fe8a9

  • SHA256

    8a6c016f821b11bd0283465ed242814ea5cedc584b00d303e1aa9b9ee45d220c

  • SHA512

    b1abb78ff2ad8ce33078b9e4b8ef33223451b989a19125bfb55c1a7309c3554b1e22c06932304dee75c207290e1e2cb82a10a1dcf07b34116897baa9d8d6b1a7

  • SSDEEP

    768:WwAbZSibMX9gRWjtwAbZSibMX9gRWjtwAbZSibMX9gRWjkhjoJBoiqV2GP6+nUB2:WwAlRkwAlRkwAlR3oHoi0FP6MUBSJDKo

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\8a6c016f821b11bd0283465ed242814ea5cedc584b00d303e1aa9b9ee45d220c.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1368
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:904
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Launches Equation Editor
      PID:3048

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      f3bca0ac5793dfbf0cabf592ef5a6fbb

      SHA1

      70350bd263b78ce68b22831d6eeb662959e5a918

      SHA256

      cb27dbbcddff4267b74f88f7638231cd8104eb35a962065b1d97c424efc7bc81

      SHA512

      06f9dd1d8d6cf9c1ac69c8ba6f95ee0a20e6d9df3017b161c26cd0d4c55ead6abb574d1d1e6dd391eca48418800528698cc0ef969b5ea1be21b7f891f950767f

    • memory/1368-0-0x000000002FEB1000-0x000000002FEB2000-memory.dmp

      Filesize

      4KB

    • memory/1368-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1368-2-0x00000000719ED000-0x00000000719F8000-memory.dmp

      Filesize

      44KB

    • memory/1368-25-0x00000000719ED000-0x00000000719F8000-memory.dmp

      Filesize

      44KB

    • memory/1368-47-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB