I've got a new blog post up at the SANS Digital Forensics Blog titled Digital Forensics: Detecting time stamp manipulation. The post is my effort to demonstrate that time stamp manipulation on systems running NTFS can be spotted (for now) if examiners take the time to fully investigate all of the available evidence (i.e. compare $STANDARD_INFO and $FILE_NAME) time stamps.
This is another barrage in my quest to get Brian Carrier, a true giant in this field, to add the capability to fls to pull $FILE_NAME time stamps into the body file format so we can build time lines using mactime that include both $STANDARD_INFO time stamps and $FILE_NAME time stamps.
Fortunately, Mark McKinnon has written a tool called mft_parser that will do this. As soon as that tool is available for wider release, I'll post a link.
Oh and I said for now, because I'm confident that the right rootkit will be able to manipulate $FILE_NAME time stamps as well as $STANDARD_INFO time stamps. In such cases, we'll have to rely on time stamps in other artifacts.
Tuesday, November 2, 2010
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