#How to block attacks install
#How to block attacks update
#How to block attacks download

We have so many detections for Zeus variants, because there are many of them configured out there in cyber space to use different Command and Control servers. Any individual can utilize this kit to create his/her own botnet, and it is vastly popular.

Zeus: Zeus is sold as a crimeware kit, meaning that it is not just one large botnet but rather many individual botnets.

Its main business model is to infect many systems with these products, hope that the victims will purchase the Scareware/Ransomware product and then reap commission profits. Instead of spamming, Bredolab is focused on downloading 'Scareware,' fake anti-virus programs, and 'Ransomware' products.

Bredolab: Much like Pushdo, Bredolab is a Loader that is very prevalent - it has broken recent detection records for us because it is so successful in spreading.

Pushdo uses Cutwail to spam copies of itself, thus growing its botnet - and can also rent out a spamming service through Cutwail.

#How to block attacks download

Pushdo will typically always download Cutwail, an e-mail spamming engine and Webwail, a web-based spamming engine that we discovered in December 2009. Typically this is charged by the 1,000s of installs and the rates will vary depending on the geographic location the malware is installed.

#How to block attacks install

The business model here is that, Pushdo can be customized for clients to install specific malware - they can charge on a per-install basis. Pushdo/Cutwail: Pushdo itself is a 'Loader', meaning it just downloads other components to install on a system.That said, according to Derek Manky, Fortinet's cyber security and threat research project manager, the big, bad five of botnets are:

#How to block attacks update

Rustock should also be mentioned as its latest update provides the use of TLS (Transparent layer security) encryption for use in hiding its spam activities.' Beyond these three results vary greatly.ДЇinally, Armstrong said, 'We have such threats as TDSS, which is a rootkit and is updated very frequently, as well as Gumblar which steals FTP credentials, and is unique in how it self-propagates through layers of servers. Kaspersky estimates that there are around half a million Koobface clients active on any given day, though due to varied networking infrastructures, it is hard to pin down an exact number. Every cyber criminal using it configures it uniquely - thus creating many unique Zeus botnets.Д¬ertainly we must also mention Koobface, which began as a Facebook-specific botnet but has grown to include Twitter, MySpace and other social networks in its attack vectors.

Recent versions are sold for big bucks while older versions may be found for free. He added, 'There is not one particular botnet for Zeus. Zeus is currently a very large threat, as the malware is found in a large portion of malicious mail attachments.' Due to the work of the Conficker working group, this botnet has been all but abandoned.

It's also hard just to pin down a list of baddies as Timothy Armstrong, anti-virus researcher, for anti-virus firm Kaspersky Lab pointed out, 'It is hard to measure which five are currently the worst.'ДЄrmstrong continued, 'While we have a botnet like Conficker (also known as Kido by Kaspersky) that is very wide spread, it has a lot of potential to do damage but has not done anything significant yet, as compared to other botnets of smaller size. While they are undoubtedly serious, the chances are that if you are attacked it will be by some much smaller fry.' Concern about the top 5 botnets is like worrying only about crime caused by the FBI's most wanted. Instead it is a toolkit allowing individual criminals to set up similar but separate botnets of their own. While many report that Zeus is a significant threat, they fail to explain that it is not a single botnet. Wang continued, 'Take for example the Zeus (aka Zbot) botnets. However, we do not track individual botnets as such.' Richard Wang, the manager for anti-virus company SophosLabs US commented that, Sophos 'tracks botnet activity based on spam that we see, sites that malware calls back to for updates and instructions, and known malware repositories. You shouldn't get too wrapped up though in who's the baddest of the bad.