Analysis

  • max time kernel
    121s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 01:08

General

  • Target

    1f48f725e1a5894937bb7ad89acbdfa4.rtf

  • Size

    3KB

  • MD5

    1f48f725e1a5894937bb7ad89acbdfa4

  • SHA1

    ad2ef4961481534651d4f9971b2e5f93ef58f5b6

  • SHA256

    a173b1ad98a853561bdfd1af7f41316c47c49672ba4df20ae824166a66f953fe

  • SHA512

    969dedc12f0310f85f414fdb09cd0fd554ed1025a1d3297d6f52f4ace76994048a063d88d76c0e0cfd29a16d0afc0484bc22063798711c7e0944e92c16ef5582

Score
4/10

Malware Config

Signatures

  • 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\1f48f725e1a5894937bb7ad89acbdfa4.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:2976
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2644
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Launches Equation Editor
      PID:2480

    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

            1d3432aed9b994002884127a68762d8c

            SHA1

            31ac76b014d9ae4d42d47557f141d8a9506ea2a4

            SHA256

            b8c285759982cafda25e59baa5dc183b2733290c32eeb64b8f58c121b8764f75

            SHA512

            5fb62386fd91551e8152ffda7bafd6656e2b2dc0bd15981c4bb51e3bb219fe82cf45bdb2088482335c6591c6cf30a02ca27256d7b14a74c6b809e9e2cfbda7d8

          • memory/2976-0-0x000000002FDE1000-0x000000002FDE2000-memory.dmp

            Filesize

            4KB

          • memory/2976-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/2976-2-0x000000007129D000-0x00000000712A8000-memory.dmp

            Filesize

            44KB

          • memory/2976-11-0x000000007129D000-0x00000000712A8000-memory.dmp

            Filesize

            44KB

          • memory/2976-29-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB