MpKsl--------.sys

Name:	MpKsl--------.sys
Info:	May be dynamic update driver for Microsoft Security Essentials MpKsl followed by 8 characters (either numbers or lowercase letters)
Source:	Unknown drivers from this post: http://www.sevenforums.com/crashes-debugging/141593-bsod-hibernation-sleep-mode.html#post1215803 or Windows Update