Showing posts with label command and control. Show all posts
Showing posts with label command and control. Show all posts

Sunday, June 12, 2016

2016-023- DNS_Sinkholing,


Picture yourself in the middle of a security incident... A malware infection, or you have hosts on your network are part of a botnet.  You figured out where how the malware is communicating with the command and control servers, but if you just kill the connection, the malware stop functioning.  What do you do?
In some cases, you might be able to employ a DNS #sinkhole to route traffic harmlessly to  or through a honey network that can be used to further analyze things like #infection vectors, #protocols, commands, and #network movement. You can also use #DNS sinkholing to disable the malware if certain conditions are met.
Like most tools, sinkholing can be used for good, but there are legal issues if it's used incorrectly.  We discuss some of the legalities. It won't disable all malware or exploit kits, but for some infections, this is another tool in your toolbox you can employ.
In a continuation from last week's show with Earl Carter about the #Angler #Exploit Kit, we discuss how Angler is able to bypass #EMET and #ASLR protections... https://www.fireeye.com/blog/threat-research/2016/06/angler_exploit_kite.html
Direct Link: http://traffic.libsyn.com/brakeingsecurity/2016-023-DNS_Sinkholes2.mp3
iTunes:

Links we used to discuss sinkholing:
Basic sinkhole app using BIND: https://isc.sans.edu/forums/diary/DNS+Sinkhole+ISO+Available+for+Download/9037/
http://resources.infosecinstitute.com/dns-sinkhole

https://www.paloaltonetworks.com/documentation/60/pan-os/newfeaturesguide/content-inspection-features/dns-sinkholing

https://www.sans.org/reading-room/whitepapers/dns/dns-sinkhole-33523

http://www.darkreading.com/partner-perspectives/general-dynamics-fidelis/principles-of-malware-sinkholing/a/d-id/1319769

Blackhole DNS servers -- http://www.malware-domains.com/   or http://www.malwaredomains.com/
http://handlers.dshield.org/gbruneau/sinkhole.htm
Malware blackhole DNS campaign (2013) - http://www.bleepingcomputer.com/forums/t/511780/dns-sinkhole-campaign-underway-for-cryptolocker/

http://www.darkreading.com/risk/microsoft-hands-off-nitol-botnet-sinkhole-operation-to-chinese-cert/d/d-id/1138455

http://someonewhocares.org/hosts//  -massive dns sinkholing list

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Wednesday, December 9, 2015

2015-051-MITRE's ATT&CK Matrix


#MITRE has a Matrix that classifies the various ways that your network can be compromised. It shows all the post-exploitation categories from 'Persistence' to 'Privilege Escalation'. It's a nice way to organize all the information.
This week, Mr. Boettcher and I go over "#Persistence" and "#Command and #Control" sections of the Matrix.
Every person who attacks you has a specific method that they use to get and keep access to your systems, it's as unique as a fingerprint. Threat intelligence companies call it TTP (#Tactics, #Techniques, and #Procedures), we also discuss the Cyber #KillChain, and where it came from.
#ATT&CK Matrix: https://attack.mitre.org/wiki/Main_Page
Tactics, Techniques, and Procedures (shows patterns of behavior) https://en.wikipedia.org/wiki/Terrorist_Tactics,_Techniques,_and_Procedures
http://www.lockheedmartin.com/content/dam/lockheed/data/corporate/documents/LM-White-Paper-Intel-Driven-Defense.pdf -- Cyber Kill Chain paper that inspired the ATT&CK Matrix
Direct Link:
iTunes:

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