AWS EC2: How to determine whether my EC2/scalr AMI was hacked? What to do to secure it?

Posted by Niro on Server Fault See other posts from Server Fault or by Niro
Published on 2010-05-16T15:52:23Z Indexed on 2010/05/16 16:00 UTC
Read the original article Hit count: 317

Filed under:

security

|

aws

|

ec2

|

scalr

|

intrusion-detection

I received notification from Amazon that my instance tried to hack another server. there was no additional information besides log dump:

Original report:

Destination IPs:
Destination Ports:
Destination URLs:
Abuse Time: Sun May 16 10:13:00 UTC 2010
NTP: N
Log Extract:

External 184.xxx.yyy.zzz, 11.842.000 packets/300s (39.473 packets/s), 5 flows/300s (0 flows/s), 0,320 GByte/300s (8 MBit/s)

(184.xxx.yyy.zzz is my instance ip)

How can I tell whether someone has penetrated my instance? What are the steps I should take to make sure my instance is clean and safe to use? Is there some intrusion detection techinque or log that I can use?

Any information is highly appreciated.

© Server Fault or respective owner

Related posts about security

sudo apt-get update errors

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Here is what I get on my terminal when running sudo apt-get update errors. I dont know if the issue is from my sources.list or my proxy setup(have not made any changes to proxies). Thank you for any help in advanced. Ign http://security.ubuntu.com oneiric-security Release.gpg Ign http://security… >>> More
The Security-Developer Gap: Why IT Security Can't Fix Your Security Problems Alone

as seen on Devx - Search for 'Devx'
Two well-known white hats explain how hackers take advantage of security holes left by enterprise application developers. >>> More
The Security-Developer Gap: Why IT Security Can't Fix Your Security Problems Alone

as seen on Internet.com - Search for 'Internet.com'
Two well-known white hats explain how hackers take advantage of security holes left by enterprise application developers. >>> More
StackOverFlowError while creating Mac object on AS400/Java

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello all, I am a newbie to AS400-Java programming. I am trying to create my first program to test the implementation of Message Authentication Code (MAC). I am trying to use the HMACSHA1 hash function. My (Java 1.4) program runs fine on a dev box (V5R4).But fails terribly on the QA box (V5R3). My… >>> More
Google App Engine - Spring Security Issue (java.security.AccessControlException)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm currently getting the AccessControlException below when I deploy to app engine (I don't see it when I run in my local environment). I'm using GAE 1.3.1, Spring 3.0.1, and Spring Security 3.0.2. Any ideas how to get around this issue? It appears to be an issue with Spring Security trying to get… >>> More

Related posts about aws

How do you transfer AWS RDS snap shot to a different AWS account

as seen on Server Fault - Search for 'Server Fault'
Hi I have an RDS database that I need to transfer a snapshot of to another AWS account. I understand there are issues being able to do this between availability zones so I'm really unsure if this is possible. The RDS instance is mySql. If it's not possible to transfer the snapshot please could… >>> More
How do I use XML prefixes in C#?

as seen on Stack Overflow - Search for 'Stack Overflow'
EDIT: I have now published my app: http://pastebin.com/PYAxaTHU I was trying to make console-based application that returns my temperature. using System; using System.Xml; namespace GetTemp { class Program { static void Main(string[] args) { XmlDocument doc… >>> More
need help with automating a CMD java tool whcih qurries alexa AWS using batch

as seen on Server Fault - Search for 'Server Fault'
Hi everyone, I need to get all available info on 600 URLs from "Alexa Web Information Service", I downloaded the java tool and I'm able to run a single query each time with a single switch/Response Group. I would like to ask how to write a batch file that would automate the process ? the java tool… >>> More
need help with automating a CMD java tool which queries alexa AWS using batch

as seen on Server Fault - Search for 'Server Fault'
Hi everyone, I need to get all available info on 600 URLs from "Alexa Web Information Service", I downloaded the java tool and I'm able to run a single query each time with a single switch/Response Group. I would like to ask how to write a batch file that would automate the process? The java tool… >>> More
Amazon AWS EC2 + Puppet, get Puppet to know AWS instance tags

as seen on Server Fault - Search for 'Server Fault'
I am having a problem with my AWS deployment, fairly new to AWS and Puppet. So coming to my question - can you distinguish puppet nodes with AWS machine tags or CNAME domains? A little background about the plan: have multiple clusters of machines, one php cluster, one legacy php cluster, one… >>> More