Analysis

  • max time kernel
    121s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    21-05-2024 14:16

General

  • Target

    f11f41db3d8a991d2d8eac064e6bf8218d27f64a33d46e6622df4b7cee72bcb0.rtf

  • Size

    37KB

  • MD5

    cb52daef850ff031df121cb8228ed757

  • SHA1

    6f6286e9033efbf12ba88fd1ad043ea5f6efb52e

  • SHA256

    f11f41db3d8a991d2d8eac064e6bf8218d27f64a33d46e6622df4b7cee72bcb0

  • SHA512

    a34eb07c61c83e86f3873f2c0a4b43a235344c0a6dfed1b357b0b3c222e3c604add5881e0e268d0e8b1215b7bb82c8ad738aa9ac286cc7a33bcc17ef3d8bf892

  • SSDEEP

    384:lvIk67f9DL6zro/D63wT067+bht1CAS2T+//7Jd7SsqM:VIk67fIzrnS7YDS2T+/zJos1

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\f11f41db3d8a991d2d8eac064e6bf8218d27f64a33d46e6622df4b7cee72bcb0.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:2264
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:3044
    • 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:2492

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      20KB

      MD5

      40aa7d25b107c1a3387a2f2612f77cec

      SHA1

      851d05dd90384fb0f1e275be1bcbec17cab3536b

      SHA256

      161f7e11e053772547ba8681da24c51dee205aca454c9050fab58351f3770e2e

      SHA512

      95cf6c79b2da45f4b9cb56057750ee4feebedd2e16a53d8a1b1fc902fa58de552e83e3adbb6d92617d9883834057e63f2ad9aa729de9f9296616fb84590ad03b

    • memory/2264-0-0x000000002FE31000-0x000000002FE32000-memory.dmp

      Filesize

      4KB

    • memory/2264-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2264-2-0x0000000070FDD000-0x0000000070FE8000-memory.dmp

      Filesize

      44KB

    • memory/2264-11-0x0000000070FDD000-0x0000000070FE8000-memory.dmp

      Filesize

      44KB

    • memory/2264-29-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB