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Analysis

  • max time kernel
    122s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    13/10/2023, 04:14

General

  • Target

    eff8eec2de2f4fbe30c4583889530b6f2ce5c8f22ba0a607a7915f3e82c2547f.rtf

  • Size

    3KB

  • MD5

    76b1295f1ccade7b25d1f0b68b241719

  • SHA1

    999c34a033a53a5cf1fba7e1403dd095579efec2

  • SHA256

    eff8eec2de2f4fbe30c4583889530b6f2ce5c8f22ba0a607a7915f3e82c2547f

  • SHA512

    0d70b3e6aed7f629153f0c996cb83fc5155acdcab053a28ce6ed13f7f02d81ab75bfc13964633d80942fbe1425ebd2ff94cdbfdde9ad3b9b60383fc222070d06

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\eff8eec2de2f4fbe30c4583889530b6f2ce5c8f22ba0a607a7915f3e82c2547f.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:2700
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1628
    • 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:2632

    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

      87fa911e63e2c5b927acd2117b848c35

      SHA1

      4646f4bfcbe8b873589669b30c3af71c8050c28f

      SHA256

      1d01d98c094faeef1b8ca4b6cd26bb31b5cf2bd685f605751946cc7c5a29d386

      SHA512

      0caaa415f3648cfc680322337a9fba606840287059fff2fdcdf9c9e0b7e41dbcd85e3fe2c6c8bc9e63297bc60232c179bc28fb623ad2aea594d462433dad31be

    • memory/2700-0-0x000000002F441000-0x000000002F442000-memory.dmp

      Filesize

      4KB

    • memory/2700-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2700-2-0x00000000716DD000-0x00000000716E8000-memory.dmp

      Filesize

      44KB

    • memory/2700-4-0x00000000716DD000-0x00000000716E8000-memory.dmp

      Filesize

      44KB

    • memory/2700-29-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2700-30-0x00000000716DD000-0x00000000716E8000-memory.dmp

      Filesize

      44KB