Microsoft Windows

SectopRAT, also known as 1xxbot or Asatafar, had been an unknown, in-development threat when we discovered it a year ago. Now it infects systems in Germany. What is the new version capable of?

IceRat keeps low detections rates for weeks by using an unusual language implementation: JPHP. But there are more reasons than the choice of the compiler. This article explores IceRat and explains a way to analyze JPHP malware.

Babax not only changes its name but also adds a Ring 3 rootkit and lateral spreading capabilities. Furthermore it has a ransomware component called OsnoLocker. Is this combination as dangerous as it sounds?

Malware sellers want to attract customers with convenience features. Now criminals can remote control malware during their bathroom routine by just using a smartphone and Telegram app.

A new ransomware uses an unusual symmetric encryption method named "Fernet". It is Python based and appends .CYRAT to encrypted files.

Try2Cry ransomware adopts USB flash drive spreading using LNK files. The last ransomware that did the same was the infamous Spora. The code of Try2Cry looks oddly familiar, though.

This Java based malware installs RDPWrap, steals credentials, logs keystrokes and remote controls Windows systems. It may soon be capable to infect without Java installed.

There is a generic and easy way to unpack Java malware that is not well-known yet. For demonstration I use a recent JAR malware sample that jumps on the COVID-19 bandwagon.

G DATA discovered an email spam campaign in Germany that delivers NetWire RAT via PowerShell in Excel documents. The emails mimick the German courier, parcel and express mail service DHL.

Public source code repository at Bitbucket.org was as abused to host CryptBot, Buer loader with NuclearBot and Cryptominer.