PaulDotCom mailing list archives
Any Advice Trojan.BHO
From: johnemiller at gmail.com (johnemiller at gmail.com)
Date: Fri, 24 Apr 2009 21:39:15 +0000
Egress filtering ICMP would be a first step to preventing successful exploitation with the particular situation you described. There is rarely a good reason to allow internal users (especially non-technical users) to send ICMP to external address ranges. Allowing ICMP as well as other unnecessary services to exit a network provides channels for attackers to get data or connectivity through a firewall. Additionally, depending on how the trojan gets installed, reducing user privs is a very important step in securing a Windows environment. I know that restricting users can be a major PITA, but allowing them to run with Administrative will ensure that the slightest vulnerability will leave them open to high-priv access to the domain. John Miller - john at ethackal.com On Apr 24, 2009 1:37pm, Shaun Curry <shauncurry1 at gmail.com> wrote:
Hello again everyone:
I have a client that recent was hacked. We learned of this when an email notification was sent from the bank stating that a "bill pay" had been sent, but the client didn't setup any bill pay. The money has been refunded and the bank is contacting the FBI to prosecute. I have learned that they were infected by trojan.bho which as I understand is a browser helper object that looks for SSL traffic and then keylogs user names and passwords. Once an SSL session is detected a ping is sent to the attacker alerting them that SSL is being used and the somehow it sends the keylogger info via ICMP. We have removed the BHO and they have reset all passwords.
I am curious if there is anything else I can do to prevent this attack from happening again? I installed and instructed the user to use Firefox and not IE and updated all windows updates along with the antivirus. They are using Symantec Corporate Edition v. 10. Is there a better antivirus to use? They have a PIX for a firewall.... and thats about all I can think of right now...
Any ideas?
thanx -Shaun
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Current thread:
- Any Advice Trojan.BHO Shaun Curry (Apr 24)
- Any Advice Trojan.BHO Kennith Asher (Apr 24)
- Any Advice Trojan.BHO Mad Marv (Apr 24)
- Any Advice Trojan.BHO Brian H (Apr 24)
- Any Advice Trojan.BHO Johan Peder Møller (Apr 24)
- Any Advice Trojan.BHO johnemiller at gmail.com (Apr 24)