electroniclooki.blogg.se - Blackhole exploit kit

#Blackhole exploit kit registration
#Blackhole exploit kit software
#Blackhole exploit kit license
#Blackhole exploit kit free

The exploit works by infecting a user when they visit a Blackhole-infected site, and their browser runs the JavaScript code, usually via a hidden iframe.

All future domains using this DGA are included in our inbound malware protection for OpenDNS Enterprise Insights and Enterprise customers.Wiredmikey writes "The popular Blackhole exploit kit, assumed to be created and maintained by an individual going by the online moniker of 'Paunch,' who continuously updates the browser exploit software, looks like it has just received another upgrade.

#Blackhole exploit kit software

OpenDNS found conclusive evidence that the domain names discovered were generated by software with malicious intent. We also searched the public portion of the malware domain list () using these ASNs and found that ASNs 1623 were flagged multiple times for hosting malicious domains or IPs in the past.Kazakhstan) and suspend active use.īlackhole DGA DNS resolution changes from May 5 thru September 23.

#Blackhole exploit kit registration

There has been significant press coverage regarding this new DGA technique over the last week, which may have prompted the hackers to change the name servers which is more lax in their registration requirements (e.g.

We propose that the findings indicate that the operation is being brought online gradually for technical reasons or to avoid detection.

The new name servers are not resolving A records for generated domains today or into the future.

The previously used name servers are no longer resolving A records for generated domains corresponding to dates before July 3rd.

On July 9, one domain () was hosted from a ccTLD (country-code top-level domain).

#Blackhole exploit kit free

On July 5, three domains (,, compress.to) were hosted from a free dynamic DNS provider ( via.

The authoritative name servers used to resolve the A records for the generated domains have changed twice.

Sampled a range of domain names generated for May 5 – Sept 23 at two times (July 5 & July 9).

Trending query counts for six consecutive generated domains.

More than a half million connections were attempted to these malicious domains within one week (June 29-July 5, 2012).

The few DNS queries outside this time window may be due machines with an incorrect date set or security research activity.

We saw abnormally high levels of activity at the time of domain generation, which quickly faded to near zero within a day or two.

These domain names were observed to have concentrated DNS queries with short life spans, and exhibited a temporal progression every 12 hours.

The top 1 million accessed domains’ complexity is graphed in green below.

Human-readable domain strings have a low lexical complexity.

Blackhole DGA domain complexity is graphed in red below.

These are often software generated with potential malicious origin.

Very random domain name strings have a high lexical complexity.

Domain name analysis can detect strings in domain labels that have entropy or a lack of order that is a strong indicator that an algorithm was used to create the domain versus a human.

Snapshot taken on July 6 shows domains generated in the past week and two future days. OpenDNS blocks all such domains for users of our service.Domain names using this algorithm are registered in advance of dates about 2 months from now.The algorithm produces 16-character domain labels with a.The machine’s timestamp seeds a fixed cryptographic algorithm.This new “Blackhole” variation generates one unique second-level domain every 12 hours.This technique has been used since 2004 for botnet controllers, but appears by many in the security community, to now be an emerging trend for malware sites.Multiple, frequently generated domains are used to host the exploit kit to prevent the security community from easily blocking the site or the site’s DNS record.What is a (DGA) Domain Generation Algorithm? Redirect to malware host site within invisible iframe. OpenDNS’s enforcement is device-, application-, protocol- and port-agnostic so all our users with OpenDNS malware protection are protected.If the victim has one of the targeted client vulnerabilities, their device is infected.Potential victims visit a compromised Web page and are redirected to the hosted exploit.Cyber criminals compromise Web pages and embed an invisible iFrame.

#Blackhole exploit kit license

Hackers license the kit (or rent an already exploited site) to cyber criminals.A very popular and customizable kit to exploit a range of client vulnerabilities via the Web.