Analysis

  • max time kernel
    103s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    3c493ae2296ec62de774a5a24574a0116c43c46c36ec45c0d832e921bea5cf41.xls

  • Size

    347KB

  • MD5

    40467ec357ede70005fc85a5121b8a90

  • SHA1

    506ed0c882274d73915c6294f30d5883281a7663

  • SHA256

    3c493ae2296ec62de774a5a24574a0116c43c46c36ec45c0d832e921bea5cf41

  • SHA512

    950e04f250cc67e63ee89c4ac9dd9715c56ef185fbbfcd0429cbe0e37afd6b62b95415f560629bc7c7782ad3131fb37a99168d38c5dcf3439ebcd558cfc35878

  • SSDEEP

    6144:4MNtZNu96ks5Z6hlCWCPfD4gRy5XsRVwNMqX6xUO7s5p2y3+o:4eTNFPqHCnD4QyN1Ss55

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 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\3c493ae2296ec62de774a5a24574a0116c43c46c36ec45c0d832e921bea5cf41.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:1144
    • 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:524
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1632
    • 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:580
    • 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:780

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/524-219-0x0000000000000000-mapping.dmp

  • memory/580-220-0x0000000000000000-mapping.dmp

  • memory/780-221-0x0000000000000000-mapping.dmp

  • memory/1144-54-0x000000002FFC1000-0x000000002FFC4000-memory.dmp

    Filesize

    12KB

  • memory/1144-55-0x00000000711B1000-0x00000000711B3000-memory.dmp

    Filesize

    8KB

  • memory/1144-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1144-57-0x000000007219D000-0x00000000721A8000-memory.dmp

    Filesize

    44KB

  • memory/1144-58-0x0000000075091000-0x0000000075093000-memory.dmp

    Filesize

    8KB

  • memory/1144-408-0x000000007219D000-0x00000000721A8000-memory.dmp

    Filesize

    44KB

  • memory/1144-409-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1144-410-0x000000007219D000-0x00000000721A8000-memory.dmp

    Filesize

    44KB

  • memory/1632-222-0x0000000000000000-mapping.dmp