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Event ID's on Domain Controllers


nd2no
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HI All

I am running 6 DC in windows 2003 evnironment. Lately I have begun to audit event ID 675 for bad passwords. My query here is that when a user enters a bad password while logging it it generates the event ID 675 with service name krbtgt\domain. 4 of these will lock out accounts. What gets me is I am noticing that there are further entries for Event ID 675 from all thru the nite (i.e when a user is out of office) where the service name is krbtgt\domain.net.local. Does anyknow why there is a difference in service name and why this events are being created???

regards

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From the information you have given I would put my money on Malware. (Trojan/Virus)

Something or someone trying to log in in the middle of the night ? Highly suspicious.

Any disgruntled ex-employees left the workplace in the recent past who may have dropped something nasty in the works ?

Do a close down, scan it, update it, defrag it, and generally clean it up.

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