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Cybersecurity researchers today disclosed a new kind of modular backdoor that targets point-of-sale (POS) restaurant management software from Oracle in an attempt to pilfer sensitive payment information stored in the devices.

The backdoor — dubbed “ModPipe” — impacts Oracle MICROS Restaurant Enterprise Series (RES) 3700 POS systems, a widely used software suite in restaurants and hospitality establishments to efficiently handle POS, inventory, and labour management. A majority of the identified targets are primarily located in the US.

“What makes the backdoor distinctive are its downloadable modules and their capabilities, as it contains a custom algorithm designed to gather RES 3700 POS database passwords by decrypting them from Windows registry values,” ESET researchers said in an analysis.

“Exfiltrated credentials allow ModPipe’s operators access to database contents, including various definitions and configuration, status tables and information about POS transactions.”

It’s worth noting that details such as credit card numbers and expiration dates are protected behind encryption barriers in RES 3700, thus limiting the amount of valuable information viable for further misuse, although the researchers posit that the actor behind the attacks could be in possession of a second downloadable module to decrypt the contents of the database.

images from Hacker News