Smominru Malware Affecting 4,700 Computers Every Day, Researchers Claim

Smominru Malware Affecting 4,700 Computers Every Day, Researchers Claim

Security researchers have discovered that the Smominru malware infected 90,000 machines worldwide during the month of August, with an infection rate of up to 4,700 computers per day. In its post-infection phase, it steals victim credentials, installs a Trojan module and a cryptominer and propagates inside the network, according to researchers from Guardicore, a data centre and cloud security company.

The botnet uses several methods to propagate, but primarily it infects a system in one of two ways — either by brute-forcing weak credentials for different Windows services, or more commonly by relying on the infamous EternalBlue exploit, cyber-security firm Kaspersky said in a blog post last week.

Even though Microsoft patched the vulnerability EternalBlue exploits, which made the WannaCry and NotPetya outbreaks possible, many companies are simply ignoring updates, Kaspersky said.

China, Taiwan, Russia, Brazil, and the US have seen the most attacks, but that doesn’t mean other countries are out of its scope. For example, the largest network Smominru targeted was in Italy, with 65 hosts infected.

The criminals involved are not too particular about their targets, which range from universities to healthcare providers.

However, one detail is very consistent. About 85 percent of infections occur on Windows 7 and Windows Server 2008 systems. The rest include Windows Server 2012, Windows XP and Windows Server 2003.