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Analysis

  • max time kernel
    123s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    05/12/2022, 14:22

General

  • Target

    c84c10614096a54afac834719606101d96904850c7411eec0c7449701f2644e2.xls

  • Size

    148KB

  • MD5

    5b6fad4e7fa43a2e71c6d6ed8c53b5df

  • SHA1

    953dec1f799f9c9b266a6c3b6f3056c61ddcab3d

  • SHA256

    c84c10614096a54afac834719606101d96904850c7411eec0c7449701f2644e2

  • SHA512

    d9182ca83888b6659512b0b75dc72cb88ee13175e7e093d762ba5b8bf69ea70c54072cd31a15a7607e77bb0017dbf964b6f13e896cd1f3129af95397611020a4

  • SSDEEP

    3072:l03X+T9d0jEejZp8uSX81eZVtnYB3Y92bd3QmfmCvbluVXA8MOqnwup2jcc0lbxn:IX+T9d0jEejZp8uSX81eZVtnYB3Y92pw

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\c84c10614096a54afac834719606101d96904850c7411eec0c7449701f2644e2.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:1520
    • 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:296
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:552
    • 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:540
    • 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:1832

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1520-57-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

    Filesize

    44KB

  • memory/1520-58-0x0000000075C81000-0x0000000075C83000-memory.dmp

    Filesize

    8KB

  • memory/1520-54-0x000000002FB21000-0x000000002FB24000-memory.dmp

    Filesize

    12KB

  • memory/1520-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1520-55-0x0000000071AB1000-0x0000000071AB3000-memory.dmp

    Filesize

    8KB

  • memory/1520-383-0x000000006CB91000-0x000000006CB93000-memory.dmp

    Filesize

    8KB

  • memory/1520-384-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

    Filesize

    44KB

  • memory/1520-385-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1520-386-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

    Filesize

    44KB