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Analysis

  • max time kernel
    119s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2022, 20:11

General

  • Target

    789b2f6dbebc98f7aa77a996e9e751b8454315c68d75c599801e009f6417c706.xls

  • Size

    140KB

  • MD5

    560ec02b7d6f2973c821d706ae4737d0

  • SHA1

    9121e4ee50280f86ffa573594c618170f9b6d4b2

  • SHA256

    789b2f6dbebc98f7aa77a996e9e751b8454315c68d75c599801e009f6417c706

  • SHA512

    7b0a4f0b52d14ebb8c396d8698bd39eb7e0f70e19863b4a31542832366197819f87b220b25dbfd236410ce93aa317c96905b75428ea6d2a790c0578bcb1503ff

  • SSDEEP

    1536:KffffrKy2mu3flLsxkfeIffWVbrzQ7IhQKbUkiD2zmO/WwF1uJSyVzBmpUp0O9yd:9sxqWVbrzQ7IhbUkDSMZyVop

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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 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\789b2f6dbebc98f7aa77a996e9e751b8454315c68d75c599801e009f6417c706.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 FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1424
    • 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:1604
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1784
    • 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:948
    • 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:2012

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1424-57-0x000000007259D000-0x00000000725A8000-memory.dmp

    Filesize

    44KB

  • memory/1424-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1424-54-0x000000002FDF1000-0x000000002FDF4000-memory.dmp

    Filesize

    12KB

  • memory/1424-58-0x0000000076151000-0x0000000076153000-memory.dmp

    Filesize

    8KB

  • memory/1424-59-0x000000006CD01000-0x000000006CD03000-memory.dmp

    Filesize

    8KB

  • memory/1424-60-0x000000007259D000-0x00000000725A8000-memory.dmp

    Filesize

    44KB

  • memory/1424-61-0x000000006C811000-0x000000006C813000-memory.dmp

    Filesize

    8KB

  • memory/1424-55-0x00000000715B1000-0x00000000715B3000-memory.dmp

    Filesize

    8KB

  • memory/1424-386-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1424-387-0x000000007259D000-0x00000000725A8000-memory.dmp

    Filesize

    44KB