Javascript

Obfuscated JavaScript Cryptominer

During an incident response investigation, we detected an interesting piece of heavily obfuscated JavaScript malware. Once decoded, we found out that cryptominers were running on visitor’s computers when they accessed our customer’s website. We have previously discussed how cryptomining can happen in many covert ways. In this post, we will show you how a malicious code

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Unsuccessfully Defaced Websites

Defaced websites are a type of hack that is easy to notice and a pain for website owners. Recently, we came across some defacement pages with a peculiar JavaScript injection included in the source code. What is a Defacement? Website defacement is a hack that often involves adding malicious images to the website homepage and

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Cookie Consent Script Used to Distribute Malware

Most websites today use cookies. Since May 25th, 2018, all websites that do business in the European Union (EU) had to make some changes to be compliant with the EU General Data Protection Regulation (GDPR). Even though cookie usage is mentioned only once in GDPR, any organization utilizing them to track users’ browsing activity have

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How to Improve Website Resilience for DDoS Attacks – Part I

Denial of Service (Dos) and Distributed Denial of Service (DDoS) attacks are unforgiving. They test the limits of your web server and application resources by sending spikes of fake traffic to your website. It is also notoriously difficult to conduct forensics on a DDoS attack, making the source of the attack a mystery. DDoS attacks

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An Old Trick with a New Twist: Cryptomining Through Disguised URL Shorteners

As we have previously discussed on this blog, surreptitious cryptomining continues to be a problem as new methods emerge to both evade and hasten the ease of mining at the expense of system administrators, website owners, and their visitors. Another Way Hackers are Tricking Website Visitors into Stealth Cryptomining The latest of these new techniques

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Unwanted Ads via Baidu Links

The malware attack that began as an installation of malicious Injectbody/Injectscr WordPress plugins back in February has evolved since then. Some of the changes were documented asUpdates at the bottom of the original blog post, however, every week we see minor modifications in the way they obfuscate the scripts or the files they inject them into.

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GitHub Hosts Infostealers Part 2: Cryptominers and Credit Card Stealers

A few days ago, we reported that hacked Magento sites had been pushing infostealing malware under the disguise of Flash player updates. In this post, we’ll reveal how this recent attack is related to an extremely hot topic – cryptocurrencies and cryptomining. Infostealer Analysis The malware binary files we found were packed with Themida, so

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