Analysis

  • max time kernel
    146s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28/11/2022, 02:38

General

  • Target

    7cfcc3083dca81f5c651166e8b5edd7c8856b36408ddc957c64b7e78457b2b8f.xls

  • Size

    544KB

  • MD5

    1072b64bead4da7bab1176b47602af4a

  • SHA1

    8018cd1fae20ba05c6852038e59675bcd1bcda56

  • SHA256

    7cfcc3083dca81f5c651166e8b5edd7c8856b36408ddc957c64b7e78457b2b8f

  • SHA512

    73938d99c9171f8d9a5aafb335945a19a785256f9b1f9e52dee4d3dc60f356d3bc656502a57f2080bc2378f8f6c5bad7bffd3af4245685ce9323e1295e767e2f

  • SSDEEP

    6144:6ZmRlSGCefI+BE34YwB6U4RFvodDLMw+2GED07:omRlSzjUEI7g/oDLSeY

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 3 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\7cfcc3083dca81f5c651166e8b5edd7c8856b36408ddc957c64b7e78457b2b8f.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:1392
    • 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:1928
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:364
    • 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:832
    • 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:1144

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1392-58-0x00000000766F1000-0x00000000766F3000-memory.dmp

          Filesize

          8KB

        • memory/1392-224-0x0000000005270000-0x0000000005370000-memory.dmp

          Filesize

          1024KB

        • memory/1392-59-0x0000000072CBD000-0x0000000072CC8000-memory.dmp

          Filesize

          44KB

        • memory/1392-385-0x0000000072CBD000-0x0000000072CC8000-memory.dmp

          Filesize

          44KB

        • memory/1392-57-0x0000000072CBD000-0x0000000072CC8000-memory.dmp

          Filesize

          44KB

        • memory/1392-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

          Filesize

          64KB

        • memory/1392-55-0x0000000071CD1000-0x0000000071CD3000-memory.dmp

          Filesize

          8KB

        • memory/1392-54-0x000000002FF71000-0x000000002FF74000-memory.dmp

          Filesize

          12KB

        • memory/1392-246-0x0000000005270000-0x0000000005370000-memory.dmp

          Filesize

          1024KB

        • memory/1392-268-0x0000000005270000-0x0000000005370000-memory.dmp

          Filesize

          1024KB

        • memory/1392-270-0x0000000005270000-0x0000000005370000-memory.dmp

          Filesize

          1024KB

        • memory/1392-269-0x0000000005270000-0x0000000005370000-memory.dmp

          Filesize

          1024KB

        • memory/1392-271-0x0000000005270000-0x0000000005370000-memory.dmp

          Filesize

          1024KB