Analysis

  • max time kernel
    120s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 20:37

General

  • Target

    certificate.010.21.doc

  • Size

    34KB

  • MD5

    f58cbc77264954ce63205bdbaee93f25

  • SHA1

    3b61d17939067fa6086c09260edd5951cc797e81

  • SHA256

    2588782842cfb9bfe76b4516ad66aee020b5f5d90f74a91106840c4491c78cf8

  • SHA512

    9e2a98e3418715b37ba02953c75828b85b818a9c140de97f4cc7164ae3a4f00a8537342d38c09051d94dfad0a60b8d7dd3d069a897100d4f1781c8fe012425a4

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 8 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\certificate.010.21.doc"
    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:612
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\redCaroline.hta"
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      PID:1204
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1428

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\users\public\redCaroline.hta
      MD5

      57425688ce24cb6a11e916c881c6b98a

      SHA1

      6c9ee880af48620a12f5a6e289bceb799121d79a

      SHA256

      ada29317ab1852485d22e6dd89b4623f10625c78937d4b360e9bdef3d1d099f5

      SHA512

      17e64381274361bd421b4f7e700d69b8cf07fb0bc8e877aa9621661eb562f1e8f6aef1d2d6d0fb1ae494a23dddb24d561dc76065cf88ce3a8eda05d630193847

    • memory/612-54-0x0000000072A31000-0x0000000072A34000-memory.dmp
      Filesize

      12KB

    • memory/612-55-0x00000000704B1000-0x00000000704B3000-memory.dmp
      Filesize

      8KB

    • memory/612-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/612-57-0x0000000075821000-0x0000000075823000-memory.dmp
      Filesize

      8KB

    • memory/612-59-0x0000000000602000-0x0000000000606000-memory.dmp
      Filesize

      16KB

    • memory/612-58-0x0000000000602000-0x0000000000606000-memory.dmp
      Filesize

      16KB

    • memory/612-60-0x0000000000602000-0x0000000000606000-memory.dmp
      Filesize

      16KB

    • memory/612-62-0x0000000000602000-0x0000000000606000-memory.dmp
      Filesize

      16KB

    • memory/1204-64-0x0000000000000000-mapping.dmp
    • memory/1428-66-0x0000000000000000-mapping.dmp
    • memory/1428-67-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp
      Filesize

      8KB