Recently one of the most dangerous ransomware, WastedLocker, owes its success to a unique bypass mechanism for security solutions and tools that block ransomware.
Initially, WastedLocker appeared this year in May, and it’s a part of the arsenal of the famous cybercriminal group Evil Corp, which is also known as Dridex.
Apart from this, the security researchers at Sophos briefly analyzed WastedLocker and discovered that it uses supplementary tools to evade detection.
The creators of WastedLocker have conceived a sequence of tactics to agitate behavior-based anti-ransomware solutions. Many ransomware families use code obfuscation to evade detection, but the creators of the WastedLocker have added another layer of protection to it.
This method allows the ransomware to transparently encrypt cached documents in memory without causing additional disk I/O. When the security tool detects the infection, it gets too late to do anything or take any further actions to defuse it.
The first signs of an attack are the already encrypted files and a ransom note. If attackers manage to gain administrator credentials, then they can easily connect to the VPN or disable the security tools installed on the affected systems.
Moreover, in the absence of two-factor authentication, the threat actors can easily log into RDP, VPN, and admin panels. So, to avoid these types of cyber threats, you should always keep your system OS up to date, use a VPN, a reliable security solution, and a reliable data backup solution.
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