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7.6

Internet Security : ET Drop Known Bot C&C : malware trojan firewall

Asked by sunhux in Internet Security, Miscellaneous Security, Network Security

Tags: Internet Security : ET Drop Known Bot C&C : malware trojan firewall

Hi,

203.120.96.204 is our HA firewall's address & it can't be
virus/malware scanned (it's an appliance firewall).

We received the following security alert.  Kindly advise
what's the action to take as scanning is not feasible.

What's the destination address 205.178.145.65 ??
Can I put a firewall rule to block this site?

===============================================

INCIDENT DESCRIPTION
Incident                 : ET DROP Known Bot C&C Server Traffic (group 4)
Duration         : From 2009-09-28 2:38:02 PM to 2009-09-28 2:38:02 PM
DeviceID         : SP01CYC0039 (10.51.226.39)
Source IP(s)         : 203.120.96.204
Source Port        : 37589
Target IP(s)         : 205.178.145.65 (Network Solutions LLC - United States of America)
Target Port        : 80
Occurrences         : 1
Severity                  : Alert
Event Classification: Possible Malware Infection

THREAT ANALYSIS
We have noticed traffic from source to the target, 205.178.145.65, which is associated to a Botnet Command & Control Server and is also known to be serving exploits.

Botnet refer to a collection of infected computers running software, usually installed via Trojan, worms or backdoors, under a common command and control infrastructure.
The botnet server can control the group remotely commonly through IRC as the command and control takes place via IRC server or a specific channel on a public IRC network.
Bot are spread by exploiting known vulnerabilities.

IMPACT ANALYSIS
The infected machine can be used to send spam email, perform DDoS and spreading of Trojan.
Keylogger program may also be installed which can leads to identity theft or disclosure of sensitive information within its network.

RECOMMENDATION
Kindly scan the above mentioned machines for any malware infections.
Update your anti-virus software with the latest definitions as most of these bots can be captured by anti-virus software. Tags:
Internet Security ET Drop Known Bot C&C malware
[+][-]10/01/09 10:54 AM, ID: 25471310Accepted Solution

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About this solution

Zones: Internet Security, Miscellaneous Security, Network Security
Tags: Internet Security : ET Drop Known Bot C&C : malware trojan firewall
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Solution Provided By: PowerIT
Participating Experts: 1
Solution Grade: B
 
[+][-]09/28/09 11:32 PM, ID: 25446472Expert Comment

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[+][-]09/29/09 08:56 AM, ID: 25450410Author Comment

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[+][-]09/29/09 12:23 PM, ID: 25452404Assisted Solution

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[+][-]10/01/09 05:46 AM, ID: 25468052Author Comment

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