The Remote Code Execution vulnerability – PHP on Windows hosts (CVE-2024-4577) is used in ransomware attacks. I already had a post about this vulnerability earlier. Now Imperva Threat Research reports that this vulnerability is being used by attackers to deliver malware identified as a component of the TellYouThePass ransomware.

⏳ The attacks were noticed on June 8, less than 48 hours after the PHP developers released a patch. The attacks used an exploit that by that time was already publicly available.

TellYouThePass attacks have been reported since 2019. They target enterprises and individuals. Attackers encrypt both Windows and Linux infrastructure.

What conclusions can be drawn? If you see a vulnerability with a public exploit and a more or less clear vector of exploitation, don’t be lazy to patch it as quickly as possible. Because attackers will definitely not be too lazy to add this exploit to their malware. 😉

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