Analysis

  • max time kernel
    154s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11/02/2023, 02:21

General

  • Target
    5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls
  • Size 92KB
  • Sample230211-cs9tzadd2v
  • SHA256 5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Language
  • xlm4.0

Source
URLs
  • xlm40.dropper

    http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/

  • xlm40.dropper

    http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/

  • xlm40.dropper

    https://wijsneusmedia.nl/cgi-bin/kFB/

  • xlm40.dropper

    http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/

Signatures

  • Process spawned unexpected child process 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls
    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:1404
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:1880
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:1864
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:2016
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:2036

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1404-54-0x000000002FD61000-0x000000002FD64000-memory.dmp

        memory/1404-55-0x00000000711B1000-0x00000000711B3000-memory.dmp

        memory/1404-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1404-57-0x000000007219D000-0x00000000721A8000-memory.dmp

        memory/1404-58-0x0000000075451000-0x0000000075453000-memory.dmp

        memory/1404-60-0x000000007219D000-0x00000000721A8000-memory.dmp