I have an odd message from the Windows Security in XP sp2

From: Bill Fruge (Fruge_at_discussions.microsoft.com)
Date: 01/06/05 

Date: Thu, 6 Jan 2005 13:07:04 -0800

I received the message that "requester.10.exe" was being blocked.
"requester.10.exe" and "requester.9.exe" two relatively new files in my
"Windows\System32" directory. Anyone have any idea what these programs are? I
suspect its either a backdoor/trojan or whomever the anonymous programmer(s)
left some unusual text in "requester.10.exe". In "requester.10.exe" at line
D0 there is this word "4D 55 48 41 48 41 48 41 48 41 48 41" or
"MUHAHAHAHAHA". Ideas anyone?