Analysis

  • max time kernel
    117s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 05:53

General

  • Target

    a3eca35d14b0e020444186a5faaba5997994a47af08580521f808b1bb83d6063.docx

  • Size

    197KB

  • MD5

    183ad96b931733ad37bb627a958837db

  • SHA1

    7f8455524bd987f5a0ef887d73092c72bdcd1aea

  • SHA256

    a3eca35d14b0e020444186a5faaba5997994a47af08580521f808b1bb83d6063

  • SHA512

    aabfcd13aa2ac75be4f4d1cab631ed80fc796855b0fe0ece6e4e1200d7e9daaf75036b8d3b5d899a1f3a90372ae221d75b82c6a0dd9b7a2773b37f7692fba8a7

Score
7/10

Malware Config

Signatures

  • Abuses OpenXML format to download file from external location 2 IoCs
  • 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 AdjustPrivilegeToken 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\a3eca35d14b0e020444186a5faaba5997994a47af08580521f808b1bb83d6063.docx"
    1⤵
    • Abuses OpenXML format to download file from external location
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:764
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1836

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/764-54-0x0000000072061000-0x0000000072064000-memory.dmp
      Filesize

      12KB

    • memory/764-55-0x000000006FAE1000-0x000000006FAE3000-memory.dmp
      Filesize

      8KB

    • memory/764-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/764-57-0x0000000075D61000-0x0000000075D63000-memory.dmp
      Filesize

      8KB

    • memory/764-59-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1836-58-0x000007FEFB711000-0x000007FEFB713000-memory.dmp
      Filesize

      8KB