Solved

676 AUDIT FAILURE- error message with Supplied Realm Name

Posted on 2006-07-07
8
592 Views
Last Modified: 2008-02-01
Hello,

Recently an employee has left the company and I get these error messages either late at night or early morning.  This employee username and email has been removed from the system.  The server that the account is trying to access is the email server.  Here is the error message, I had change up the username and Supplied Realm Name which has the Domain info.  

Is there a service trying to access this employee's account?

676,AUDIT FAILURE,Security NT AUTHORITY\SYSTEM,Authentication Ticket Request Failed,    User Name:  John Doe  Supplied Realm Name: AB Domain

Thanks for your help.
0
Comment
Question by:g000se
  • 4
  • 4
8 Comments
 
LVL 11

Author Comment

by:g000se
ID: 17058302
**change on 3rd sentence:  The account is trying to access the email server.

Haven't finish getting caffine into my system.
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 17058533
676 audit failure usually indicates someone is trying to access. There should also be a failure code indicating why access was denied. Probably in this case #6 indicating an invalid username.
Other than the fact that his is at an odd time of day it might be quite innocent. Does the user have a remote PC or laptop on which the mail account might not have been disabled? If so the computer may just be attempting to do a routine mail download.
0
 
LVL 11

Author Comment

by:g000se
ID: 17058786
Thanks for your reply RobWill.

This person may have a laptop that was configured to connect to our email server.

Last Friday I had tried to access our webmail using the disabled account and was able to generate the same error message.

This person's username has been removed but their email address has been added to on the other folk's smtp.

It just seems odd for the error message to show up after this person has left.
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 17058858
>>"seems odd for the error message to show up after this person has left."
Definitely, but as mentioned may be due to the mail account still existing on the laptop. Can you contact them and just explain that the account should be removed as it is "cluttering" your log file.
Then again it could be an intentional attempt. Perhaps with no success they will stop. However, if they were trying to hack your system you would think they might try more than just the mail server.
0
Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

 
LVL 11

Author Comment

by:g000se
ID: 17059660
Very true, I just don't want to jump ahead of myself and think this person is hacking.
0
 
LVL 77

Accepted Solution

by:
Rob Williams earned 500 total points
ID: 17059724
See if it continues. If it is at a somewhat regular time each day indicating it is probably normal use of the laptop, you may want to give them a call.
Do you get frequent attempts in a short period of time? This might indicate hacking. If frequent but very regular intervals, such as every 15 minutes it might indicate auto-mail downloading.
Tough call.
0
 
LVL 11

Author Comment

by:g000se
ID: 17307811
thanks
0
 
LVL 77

Expert Comment

by:Rob Williams
ID: 17307849
Thanks g000se,
--Rob
0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

BIND is the most widely used Name Server. A Name Server is the one that translates a site name to it's IP address. There is a new bug in BIND (https://kb.isc.org/article/AA-01272), affecting all versions of BIND 9 from BIND 9.1.0 (inclusive) thro…
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

746 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now