Ever since we exposed and profiled the evasive, multi-hop, mass iframe campaign that affected thousands of Web sites in November, we continued to monitor it, believing that the cybercriminal(s) behind it, would continue operating it, basically switching to new infrastructure once the one exposed in the post got logically blacklisted, thereby undermining the impact of the campaign internationally. Not surprisingly, we were right. The campaign is not only still proliferating, but the adversaries behind it have also (logically) switched the actual hosting infrastructure. Let’s dissect the currently active malicious iframe campaign that continues to serving a cocktail of (patched) client-side […]
Posts Tagged: Client-Side Exploits
Sharing is caring. In this post, I’ll put the spotlight on a currently circulating, massive — thousands of sites affected — malicious iframe campaign, that attempts to drop malicious software on the hosts of unaware Web site visitors through a cocktail of client-side exploits. The campaign, featuring a variety of evasive tactics making it harder to analyze, continues to efficiently pop up on thousands of legitimate Web sites. Ultimately hijacking the legitimate traffic hitting them and successfully undermining the confidentiality and integrity of the affected users’ hosts.
We’ve intercepted an ongoing malicious campaign, relying on injected/embedded iFrames at Web sites acting as intermediaries for a successful client-side exploits to take place. Let’s dissect the campaign, expose the malicious domains portfolio/infrastructure it relies on, as well as directly connect it with historical malicious activity, in this particular case, a social engineering campaign pushing fake browser updates.
Throughout the last couple of years, the persistent demand for geolocated traffic coming from both legitimate traffic exchanges or purely malicious ones — think traffic acquisition through illegally embedded iFrames — has been contributing to the growing market segment where traffic is bought, sold and re-sold, for the sole purpose of monetizing it through illegal means. The ultimately objective? Expose users visiting compromised, or blackhat SEO-friendly automatically generated sites with bogus content, to fraudulent or malicious content in the form of impersonations of legitimate Web sites seeking accounting data, or client-side exploits silently served in an attempt to have an […]
Apple Store users, beware! A currently ongoing malicious spam campaign is attempting to trick users into thinking that they’ve successfully received a legitimate ‘Gift Card’ worth $200. What’s particularly interesting about this campaign is that the cybercriminal(s) behind it are mixing the infection vectors by relying on both a malicious attachment and a link to the same malware found in the malicious emails. Users can become infected by either executing the attachment or by clicking on the client-side exploits serving link found in the emails. More details:
Bank of America (BofA) customers, watch what you click on! A currently ongoing malicious spam campaigns is attempting to entice BofA customers into clicking on the client-side exploit serving URLs found in legitimate looking ‘Statement of Expenses’ themed emails. Once users with outdated third-party applications and browser plugins click on the link, an infection is installed that automatically converts their PC’s into zombies under the control of the botnet operated by the cybercriminal/gang of cybercriminals behind the campaign. More details:
By Dancho Danchev Our sensors recently picked up a Web site infection, affecting the Web site of the Ministry of Micro And Medium Enterprises (MSME DI Jaipur). And although the Black Hole Exploit Kit serving URL is currently not accepting any connections, it’s known to have been used in previous client-side exploit serving campaigns. Let’s profile the campaign, list the malicious URLs, associate them with previously launched malicious campaigns, and provide actual MD5s for historical OSINT preservation/attribution purposes. More details:
By Dancho Danchev Kindle users, watch what you click on! Cybercriminals are currently mass mailing tens of thousands of fake Amazon “You Kindle E-Book Order” themed emails in an attempt to trick Kindle users into clicking on the malicious links found in these messages. Once they do so, they’ll be automatically exposed to the client-side exploits served by the Black Hole Exploit Kit, ultimately joining the botnet operated by the cybercriminal/cybercriminals that launched the campaign. More details:
Cybercriminals are currently mass mailing millions of emails, in an attempt to trick Bank of America customers into clicking on the exploit and malware-serving link found in the spamvertised email. Relying on bogus “Online Banking Passcode Changed” notifications and professionally looking email templates, the campaign is the latest indication of the systematic rotation of impersonated brands in an attempt to cover as many market segments as possible. More details:
Verizon Wireless customers, beware! For over a week now, cybercriminals have been persistently spamvertising millions of emails impersonating the company, in an attempt to trick current and prospective customers into clicking on the client-side exploits and malware serving links found in the malicious email. Upon clicking on any of the links, users are exposed to the client-side exploits served by the latest version of the Black Hole Exploit Kit. More details: