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New web skimmer found in Shopify, BigCommerce, Woocommerce and Zencart stores

Sansec experts have discovered a new multi-platform MageCart skimmer capable of stealing payment information from compromised stores. The web skimmer works in Shopify, BigCommerce, Zencart and Woocommerce stores (even if they don’t support custom scripts for checkout pages).

Let me remind you that initially the name MageCart was assigned to one hack group, which was for the first time used web skimmers (malicious JavaScript) on the pages of online stores to steal bank card data.

However, this approach was so successful that soon the group had numerous imitators, and the name MageCart became a common name, and currently denoting a whole class of such attacks.

Typically, web skimmers target one e-commerce platform, but the new researchers’ finding works differently.say Sansec experts.

Sansec analysts have identified the new malware in dozens of stores across different platforms. The malware steals payment information by displaying a fake checkout page (before customers see the actual payment form) and also uses a keylogger for card data and personal information.

web skimmer in Shopify stores
Fake form of payment

To avoid detection, the skimmer displays an error after customers click the Continue button to provide the store with their credit card information. After that, the victims will be redirected back to the real ordering and payment form.

web skimmer in Shopify stores

The method of data extraction used by the skimmer is also remarkable. Attackers use for this purpose automatically generated domains based on counter and base64 (for example, zg9tywlubmftzw5ldza[.]com and zg9tywlubmftzw5ldze[.]com). This feature helped researchers understand how long this campaign has been active: the first domain for data extraction was registered on August 31, 2020.

To summarize, this campaign shows that different platforms are not an obstacle to profitable online skimming fraud. Wherever customers enter their payment details, they are at risk.summarize the experts.

Let me also remind you that Hackers hide MageCart skimmers in social media buttons.

Vladimir Krasnogolovy

Vladimir is a technical specialist who loves giving qualified advices and tips on GridinSoft's products. He's available 24/7 to assist you in any question regarding internet security.

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