Posts Categorized: Threat Research


Socks4/Socks5 enabled hosts as a service introduces affiliate network based revenue sharing scheme

by

Thanks to the commercial and public availability of DIY (do-it-yourself) modular malware/botnet generating tools, the diverse market segment for Web malware exploitating kits, as well as traffic acquiring/distributing cybercrime-friendly traffic exchanges, cybercriminals continue populating the cybercrime ecosystem with newly launched services offering API-enabled access to Socks4/Socks5 compromised/hacked hosts. Largely relying on the ubiquitous affiliate network revenue sharing/risk-forwarding scheme, vendors of these services, as well as products with built-in Socks4/Socks5 enabled features, continue acquiring new customers and gaining market share to further capitalize on their maliciously obtained assets. We’ve recently spotted a newly launched affiliate network for a long-run — since 2004 […]

Continue Reading »

5M+ harvested Russian mobile numbers service exposes fraudulent infrastructure

by

Cybercriminals continue adapting to the exponential penetration of mobile devices through the systematic release of DIY (do-it-yourself) mobile number harvesting tools, successfully setting up the foundations for commercial managed/on demand mobile phone number harvesting services, ultimately leading to an influx of mobile  malware/spam campaigns. In addition to boutique based DIY operations, sophisticated, ‘innovation’ and market development-oriented cybercriminals are actively working on the development of commercially available Android-based botnet generating tools, further fueling growth into the market segment. In a series of blog posts, we’ve been profiling multiple cybercrime-friendly services/malicious Android-based underground market releases, further highlighting the professionalization of the market […]

Continue Reading »

SXSW Apps Exposed Panel Re-cap (#MobileRisk)

by

Security and privacy were hot topics at this year’s SXSW Interactive festival, and deservingly so. While at the event in Austin, I had the pleasure of participating on a panel discussing malicious mobile apps, mobile device security and user privacy. With me on the panel was Alan Murray, Senior VP of Products at Apperian and Erich Stuntebeck, Director of Mobile Security at AirWatch. Fahmida Rashid, Analyst for PC Mag, moderated the event. Questions initially focused on malicious app behaviors such as accessing private user data, SMS history and GPS tracking as well as spyphone apps, rooting apps and the increased […]

Continue Reading »

Multiple spamvertised bogus online casino themed campaigns intercepted in the wild

by

Regular readers of Webroot’s Threat Blog are familiar with our series of posts detailing the proliferation of social engineering driven, privacy-violating campaigns serving W32/Casino variants. Relying on affiliate based revenue sharing schemes and spamvertised campaigns as the primary distribution vectors, the rogue operators behind them continue tricking tens of thousands of gullible users into installing the malicious applications. We’ve recently intercepted a series of spamvertised campaigns distributing W32/Casino variants. Let’s profile the campaigns, provide actionable intelligence on the rogue domains involved in the campaigns, as well as related MD5s known to have interacted with the same rogue infrastructure. More details:

Continue Reading »

Commercial Windows-based compromised Web shells management application spotted in the wild – part two

by

Sticking to good old fashioned TTPs (tactics, techniques and procedures), cybercriminals continue mixing purely malicious infrastructures with legitimate ones, for the purpose of abusing the clean IP reputations of networks, on their way to achieving positive ROI (return on investment) for their fraudulent activities. For years, this mix of infrastructures has lead to the emergence of the ‘malicious economies of scale’ concept, in terms of efficient abuse of legitimate Web properties, next to the intersection of cybercriminal online activity, and cyber warfare. In a series of blog posts, we’ve been emphasizing on the level of automation and QA (Quality Assurance) applied by […]

Continue Reading »

Managed Web-based 300 GB/s capable DNS amplification enabled malware bot spotted in the wild

by

Opportunistic cybercriminals continue ‘innovating’ through the systematic release of DIY (do-it-yourself), Web-based, botnet/malware generating tools, seeking to monetize their coding ‘know-how’ and overall understanding of abusive/fraudulent/malicious TTPs (tactics, techniques and procedures) - all for the purpose of achieving a positive ROI with each new release. We’ve recently spotted a newly released, Web-based DNS amplification enabled DDoS bot, and not only managed to connect it to what was once an active DDoS attack, but also, to the abuse of a publicly accessible open DNS resolver which has been set up for research purposes. Let’s discuss some of its features and take a peek at the […]

Continue Reading »

Solving the mystery of incidence response

by

The threat landscape today is very different from a few years ago. With an increasingly creative number of threat vectors through which to launch an attack, it has never been more challenging to secure our data and devices in all the ways we connect. In today’s hyper-dynamic landscape, well over 8 million malware variants are discovered each month. The majority are financially motivated, very low in volume and very sophisticated. On the mobile front, cybercriminals have shown a clear focus on compromising devices made evident by an explosion in the discovery of malicious mobile apps and websites. Also on the […]

Continue Reading »

Deceptive ads expose users to PUA.InstallBrain/PC Performer PUA (Potentially Unwanted Application)

by

Deceptive ads continue to represent the primary distribution vector for the vast majority of Potentially Unwanted Applications (PUAs) that we track. Primarily relying on ‘visual social engineering’ tactics, gullible end users fall victims to these privacy-violating applications, largely due to the fact that they instantaneously agree to the terms in the End User’s Agreement presented to them. We’ve recently spotted yet another variant of the InstallBrain family of Potentially Unwanted Applications (PUA’s), tricking users into installing a bogus PC performance boosting application. Let’s assess this campaign and provide actionable intelligence on the domains/IPs and related privacy-violating MD5s known to have shared the […]

Continue Reading »

Can Security Survive in an Increasingly Insecure World?

by

2013 was not a good year in terms of cyber security. Despite companies spending an increasingly significant percent of revenue on security technology – systems designed to thwart, detect and prevent hackers from gaining access to their networks and sensitive data – attacks continue to succeed. Recently, the trend has shifted to attacking point of sale (POS) systems. While Target is the largest example, similar attacks have occurred in industries ranging from department stores to hospitals to hotel chains. Basically anywhere large scale financial transactions take place. The focus on POS systems doesn’t come as a surprise. Cybercriminals have always […]

Continue Reading »

Spamvertised ‘You received a new message from Skype voicemail service’ themed emails lead to Angler exploit kit

by

We’ve just intercepted a currently circulating malicious spam campaign that’s attempting to trick potential botnet victims into thinking that they’ve received a legitimate Voice Message Notification from Skype. In reality though, once socially engineered users click on the malicious link found in the bogus emails, they’re automatically exposed to the client-side exploits served by the Angler exploit kit. More details:

Continue Reading »