Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Cybercrime

New Spelevo Exploit Kit Spreads via B2B Website

A newly discovered exploit kit is being disseminated via a compromised business-to-business website, Cisco Talos security researchers report.

A newly discovered exploit kit is being disseminated via a compromised business-to-business website, Cisco Talos security researchers report.

Although the activity surrounding exploit kits (EKs) has diminished significantly following the demise of Angler in 2016, they remained a constant threat and continue to thrive, mainly because they represent a web-based platform that does not require user interaction for infection. 

The recently spotted Spelevo is proof that EKs are still a threat and should be taken seriously. The threat, Cisco Talos says, illustrates many of the challenges associated with protecting against these crime kits. 

On the compromised website spreading Spelevo, the attackers added only four lines of code, enough to compromise all visitors that have poor security hygiene. Multiple pages on the site were infected, including the homepage, and all of them were redirecting to the gate used for the campaign. 

The infection gate is being hosted at ezylifebags[.]com[.]au, but the researchers also noticed a request for a JavaScript file being hosted at your-prizes-box[.]life, but it only results in additional requests for the same file, via 301 redirect. 

This “could be used as an additional tracker to ensure the victim is getting to the gate via the proper channels, a compromised website, and are not direct connects from researchers,” Talos notes

Spelevo’s activity begins with a request for the landing page, where an initial vetting and reconnaissance of the system occur. Information collected includes operating system, web browser, and applicable plugins. 

Should a vulnerable version of Adobe Flash be found, the EK attempts to exploit CVE-2018-15982. If not, a second infection path is followed, attempting to deliver an exploit for CVE-2018-8174, a use-after-free in the VBScript engine of Internet Explorer. 

Advertisement. Scroll to continue reading.

“It’s not surprising to find this exploit being added to multiple exploit kits, as most kits copy one another and once an exploit is available in one, the others typically are not far behind,” Talos points out. 

Following system compromise, Spelevo redirects the victim to Google. Basically, the user would see a browser tab opening to load the gate, followed by the landing page, an exploit page, and then Google, which could trick some into believing they haven’t been compromised. 

During the campaign, the EK was observed delivering the IcedID and Dridex Trojans, but the payloads could vary in other attacks. 

Although observed only a couple of months ago, Spelevo has already gone through some changes, including a modified URL structure and some obfuscation updates in the landing and exploit pages. The threat, however, makes use of many common techniques that EKs have been employing for years. 

Spelevo is being hosted on domains instead of hard coded IP addresses and its operators leverage domain shadowing for that. 

“In much the same way that we see old threats like MyDoom and Stuxnet circulating on the internet today, exploit kits will be a permanent part of the threat landscape. They are still incredibly effective at leveraging existing vulnerabilities to randomly compromise victims on the internet to deliver a malicious payload,” Talos notes. 

Related: Exploit for Recent Flash Zero-Day Added to Fallout Exploit Kit

Related: New Exploit Kit Targets SOHO Routers

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Trending

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join the session as we discuss the challenges and best practices for cybersecurity leaders managing cloud identities.

Register

SecurityWeek’s Ransomware Resilience and Recovery Summit helps businesses to plan, prepare, and recover from a ransomware incident.

Register

Expert Insights

Related Content

Cybercrime

The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.

Cybercrime

A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...

Cybercrime

As it evolves, web3 will contain and increase all the security issues of web2 – and perhaps add a few more.

Cybercrime

Luxury retailer Neiman Marcus Group informed some customers last week that their online accounts had been breached by hackers.

Cybercrime

Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.

Cybercrime

Patch Tuesday: Microsoft calls attention to a series of zero-day remote code execution attacks hitting its Office productivity suite.

Artificial Intelligence

The release of OpenAI’s ChatGPT in late 2022 has demonstrated the potential of AI for both good and bad.

Cybercrime

Satellite TV giant Dish Network confirmed that a recent outage was the result of a cyberattack and admitted that data was stolen.