Malware

Malware actors very rarely stick to the same script for extended periods of time. They constantly modify and update their attack methods. Recently we have observed malware that uses server-side polymorphism to hide its payload, which consists of a backdoor fully written in PowerShell.

The third part of the StrangeBits series has the ultimate solution for ransomware, explains why some malware is bloated and looks into a supposedly new skulls and bones malware infection.

A malware called "SilentBruter", which is designed to guess login credentials for online accounts, has caught the attention of one of our analysts. In this blogpost we take a closer look at the Silentbruter-Malware and its rather interesting internal structures.

When facing a ransomware infection, it helps to be familiar with some tools as well as key points to identify ransomware correctly.

In the second part of our Strange Bits series we are taking a closer look at Sodinokibi Spam E-Mails, CinaRAT and a Malware that tries to imitate G DATA.

Sometimes we see odd stuff, like malware that employs a technique called "HTML Smuggling". Also, malware on GitHub seems to be a thing these days.

This is the final post in our graph database series, where we introduce a classification algorithm that operates on a graph. Within it, we give a high level description of the algorithm and we point out some general steps that can be carried to conceptually improve the overall performance.

A new ransomware variant discredits EnigmaSoft by pretending to be SpyHunter. The ransom message reads like mockery. Some of the encrypted files might be recoverable.

Threat actors regularly come up with new techniques for malware downloaders to hide and execute their code with the expectation that they can fool antivirus solutions for some time. Paliz is an archive that carries malicious code in an unusual location.

Using Microsoft Word to distribute malware is a common tactic used by criminals. Given the popularity of Word, criminals can often "live off the land" and use mechanisms that are already in place to do their dirty work.