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Analysis

  • max time kernel
    148s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 11:14

General

  • Target

    31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b.xls

  • Size

    96KB

  • MD5

    00142a44ffac759b5d3564e284b13325

  • SHA1

    da2f651e19088d64c4750f5a808e7f0a8e8c5bc2

  • SHA256

    31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b

  • SHA512

    20761f2bd11628da72c02b736961104c3ee86ffdf9e52fefc4555583b680ee2a4491693c3376a41cf48b04a8dc3a738ef0629ea5040dd7943a0d9b5bc3874a81

  • SSDEEP

    1536:ZQQQQcSxoPVy4tzw2pWVbrzQ7ITkoYlFA23k088ScJtXwPhfw:wDWVbrzQ7ITkRNjhJtXwJfw

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Views/modifies file attributes 1 TTPs 1 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\31f13bcedfd5e28b3fd679c47223c2d53f7aaf7c377e90d86e267cc1c3c8a66b.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1460
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:328
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:1552
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:748

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2036-54-0x000000002FDC1000-0x000000002FDC4000-memory.dmp

    Filesize

    12KB

  • memory/2036-55-0x00000000719A1000-0x00000000719A3000-memory.dmp

    Filesize

    8KB

  • memory/2036-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2036-57-0x000000007298D000-0x0000000072998000-memory.dmp

    Filesize

    44KB

  • memory/2036-58-0x0000000076941000-0x0000000076943000-memory.dmp

    Filesize

    8KB

  • memory/2036-383-0x000000007298D000-0x0000000072998000-memory.dmp

    Filesize

    44KB

  • memory/2036-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2036-385-0x000000007298D000-0x0000000072998000-memory.dmp

    Filesize

    44KB