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 More Info »
Tag Archives: javascript
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 More Info »
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 More Info »
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 More Info »
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 More Info »
Massive localstorage[.]tk Drupal Infection
After a series of critical Drupal vulnerabilities disclosed this spring, it’s not surprising to see a surge of massive Drupal infections like this one: Massive #Drupal infection that redirects to “Tech Support” scam via “js.localstorage[.]tk” https://t.co/30ZeLIyfza pic.twitter.com/ZCPMepM74k — Denis (@unmaskparasites) April 24, 2018 … with over a thousand compromised sites that redirect visitors to “Tech More Info »
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. More Info »
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 More Info »
Unwanted Pop-ups Caused by Injectbody/Injectscr Plugins
On February 8th, 2018, we noticed a new wave of WordPress infections involving two malicious plugins: injectbody and injectscr. These plugins inject obfuscated scripts, creating unwanted pop-up/pop-unders. Whenever a visitor clicks anywhere on an infected web page, they are served questionable ads. Plugin Location The malicious plugins possess a very similar file structure: Injectbody wp-content/plugins/injectbody/ More Info »
Cloudflare[.]solutions Keylogger Returns on New Domains
A few months ago, we covered two injections related to the “cloudflare.solutions” malware: a CoinHive cryptominer hidden within fake Google Analytics and jQuery, and the WordPress keylogger from Cloudflare[.]solutions. This malware was originally identified by one of our analysts in April 2017 and has since evolved and spread to new domains. Keylogger Spreads to New More Info »
