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Fake “Corona Antivirus” distributes BlackNET remote administration tool

Scammers and malware authors are taking advantage of the coronavirus crisis in full swing. We have seen a number of spam campaigns using COVID-19 as a lure to trick people into installing a variety of malware, but especially data stealers. As more of us work from home, the need to secure your computer, especially if you are connecting to your company’s network, becomes more important. … [Read more...]

APT36 jumps on the coronavirus bandwagon, delivers Crimson RAT

Since the coronavirus became a worldwide health issue, the desire for more information and guidance from government and health authorities has reached a fever pitch. This is a golden opportunity for threat actors to capitalize on fear, spread misinformation, and generate mass hysteria—all while compromising victims with scams or malware campaigns. Profiting from global health concerns, natural … [Read more...]

Rocket Loader skimmer impersonates CloudFlare library in clever scheme

Fraudsters are known for using social engineering tricks to dupe their victims, often times by impersonating authority figures to instill trust. In a recent blog post, we noted how criminals behind Magecart skimmers mimicked content delivery networks in order to hide their payload. This time, we are looking at a far more clever scheme. This latest skimmer is disguised as a JavaScript file … [Read more...]

Domen toolkit gets back to work with new malvertising campaign

Last year, we documented a new social engineering toolkit we called “Domen” being used in the wild. Threat actors were using this kit to trick visitors into visiting compromised websites and installing malware under the guise of a browser update or missing font. Despite being a robust toolkit, we only saw Domen in sporadic campaigns last year, often reusing the same infrastructure … [Read more...]

Fraudsters cloak credit card skimmer with fake content delivery network, ngrok server

Threat actors love to abuse legitimate brands and infrastructure—this, we know. Last year we exposed how web skimmers had found their way onto Amazon’s Cloudfront content delivery network (CDN) via insecure S3 buckets. Now, we discovered scammers pretending to be CDNs while exfiltrating data and hiding their tracks—another reason to keep watchful eye on third-party content. Sometimes, … [Read more...]

WOOF locker: Unmasking the browser locker behind a stealthy tech support scam operation

In the early days, practically all tech support scammers would get their own leads by doing some amateur SEO poisoning and keyword stuffing on YouTube and other social media sites. They’d then leverage their boiler room to answer incoming calls from victims. Today, these practices continue, but we are seeing more advanced operations with a clear separation between lead generation and … [Read more...]

New evasion techniques found in web skimmers

For a number of years, criminals have been able to steal credit card details from unaware online shoppers without attracting too much attention. Few people in the security industry were talking about these credit card web skimmers, both server-side and client-side, before the latter became largely known as Magecart. It took some major incidents, notably the Ticketmaster and British Airways … [Read more...]

Spelevo exploit kit debuts new social engineering trick

2019 has been a busy year for exploit kits, despite the fact that they haven’t been considered a potent threat vector for years, especially on the consumer side. This time, we discovered the Spelevo exploit kit with its virtual pants down, attempting to capitalize on the popularity of adult websites to compromise more devices. The current Chromium-dominated browser market share favors … [Read more...]

Hundreds of counterfeit online shoe stores injected with credit card skimmer

There’s a well-worn saying in security: “If it’s too good to be true, then it probably isn’t.” This can easily be applied to the myriad of online stores that sell counterfeit goods—and now attract secondary fraud in the form of a credit card skimmer. Allured by great deals on brand names, many people end up buying products on dubious websites only to find out that … [Read more...]

New version of IcedID Trojan uses steganographic payloads

This blog post was authored by @hasherezade, with contributions from @siri_urz and Jérôme Segura. Security firm Proofpoint recently published a report about a series of malspam campaigns they attribute to a threat actor called TA2101. Originally targeting German and Italian users with Cobalt Strike and Maze ransomware, the later wave of malicious emails were aimed at the US and pushing the … [Read more...]