Analysis

  • max time kernel
    101s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28-05-2022 02:43

General

  • Target

    originalfile/PlugX_RTF_dropper_42fba80f105aa53dfbf50aeba2d73cae.rtf

  • Size

    507KB

  • MD5

    42fba80f105aa53dfbf50aeba2d73cae

  • SHA1

    a49b135a66afba5713936d4758ca5d40f19b9e71

  • SHA256

    ac7d02465d0b1992809e16aaae2cd779470a99e0860c4d8a2785d97ce988667b

  • SHA512

    b42b529585da21bae4d36fb1e9b5f2471e77d87505db91f8859068816d355fdd8b4aaaa922512a8a39259b247b9aeaeba92cfb0ab5140122f83dd163b8ed00cf

Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 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\originalfile\PlugX_RTF_dropper_42fba80f105aa53dfbf50aeba2d73cae.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1732

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1660-54-0x0000000072C81000-0x0000000072C84000-memory.dmp
      Filesize

      12KB

    • memory/1660-55-0x0000000070701000-0x0000000070703000-memory.dmp
      Filesize

      8KB

    • memory/1660-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1660-57-0x0000000076781000-0x0000000076783000-memory.dmp
      Filesize

      8KB

    • memory/1660-60-0x00000000716ED000-0x00000000716F8000-memory.dmp
      Filesize

      44KB

    • memory/1660-61-0x00000000716ED000-0x00000000716F8000-memory.dmp
      Filesize

      44KB

    • memory/1660-62-0x00000000003E1000-0x00000000003E5000-memory.dmp
      Filesize

      16KB

    • memory/1660-63-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1660-64-0x00000000716ED000-0x00000000716F8000-memory.dmp
      Filesize

      44KB

    • memory/1732-58-0x0000000000000000-mapping.dmp
    • memory/1732-59-0x000007FEFC331000-0x000007FEFC333000-memory.dmp
      Filesize

      8KB