Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 03:38

General

  • Target

    d1d4dc51512de49ee88db46829c704787de82eed40cda2824b15c86ba08c716c.rtf

  • Size

    70KB

  • MD5

    e15b884edd4e9993a04c5b4460fee2c6

  • SHA1

    033679d4d6affa6d35d3ea9b3ca9e2a0fc77efff

  • SHA256

    d1d4dc51512de49ee88db46829c704787de82eed40cda2824b15c86ba08c716c

  • SHA512

    f53ca9597a0a1c776c8266f68a44c5379608cd7592ca944b461f6c74e90f71ddd08de47975a540581dc889b8cb2b111415e72cdda8b26a5c1ceeca54c14fe6b2

  • SSDEEP

    1536:A35sB0NnfWSCltkTkfW/uiLzxU8aaqcO4x93OnEgsNAc:D0N5AtkTkfWFLzK633OnJs5

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 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\d1d4dc51512de49ee88db46829c704787de82eed40cda2824b15c86ba08c716c.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:1992
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2440
    • 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:2596

    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

            5585522051d192110ac94d4ac3eaa4ba

            SHA1

            3e8240529bc360a62204c849bca415f981270999

            SHA256

            576204555bd648a59083ce8636b977a8c5637f690f71cbcfc54ff6e502e41c04

            SHA512

            daf39105765517dc11dca8504c6fb7c67931cc7b0485e02c73468147aa10abda0930298c415a54bf84ac1e141cb3d896783bcb3ab70ba28f6780255544493dc1

          • memory/1992-0-0x000000002F801000-0x000000002F802000-memory.dmp

            Filesize

            4KB

          • memory/1992-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1992-2-0x0000000070C3D000-0x0000000070C48000-memory.dmp

            Filesize

            44KB

          • memory/1992-11-0x0000000070C3D000-0x0000000070C48000-memory.dmp

            Filesize

            44KB

          • memory/1992-32-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB