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Two Windows questions

Subject: Two Windows questions
Date: 15 Sep 2005 13:37:22 -0000
All,

I've got a couple of questions, primarily for clarification.  After researching 
these both for a while, I'd like to try to get some more definitive 
information...

First...the UserAssist\{GUID}\Count keys:
http://personal-computer-tutor.com/abc3/v29/vic29.htm

Does anyone have any specific information (ie, definitive source) available on 
what kinds of activities result in entries in these keys?  

My second question refers to the FILE_BASIC_INFORMATION structure:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/kmarch/hh/kmarch/k112_3de98e8c-d842-45e9-a9bd-948276ef1b87.xml.asp

The structure is described as:
typedef struct FILE_BASIC_INFORMATION {
  LARGE_INTEGER  CreationTime;
  LARGE_INTEGER  LastAccessTime;
  LARGE_INTEGER  LastWriteTime;
  LARGE_INTEGER  ChangeTime;
  ULONG  FileAttributes;
} FILE_BASIC_INFORMATION, *PFILE_BASIC_INFORMATION;

Does anyone have a definitive resource that specifies the difference between 
the LastWriteTime and the ChangeTime?  I've looked at MSDN, in Brian Carrier's 
book, and via Google...input would be greatly appreciated.

Thanks,

H. Carvey
"Windows Forensics and Incident Recovery"
http://www.windows-ir.com
http://windowsir.blogspot.com

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