The Hacker News - Cybersecurity News and Analysis: system optimization tool

Like many others, do you also believe that the popular system-cleaning tool CCleaner was performing well before Avast acquired the software from Piriform last year? If yes, then pop-up advertisements in the previous CCleaner software version was not the last thing you have to deal with. Avast has released a new version of CCleaner 5.45 that not only always runs in the background, but also collects information about your system without giving you a way to turn the feature off. CCleaner is a popular application, available in both free and premium versions, with over 2 billion downloads that allow users to clean up their Windows, Mac, and mobile devices to optimize and enhance performance. Last year, CCleaner made headlines when it suffered a massive supply-chain malware attack of all times, wherein hackers compromised its servers for over a month and replaced the original version of the software with the malicious one, infecting over 2.3 million users worldwide. CCleaner

Last year, the popular system cleanup software CCleaner suffered a massive supply-chain malware attack of all times, wherein hackers compromised the company's servers for more than a month and replaced the original version of the software with the malicious one. The malware attack infected over 2.3 million users who downloaded or updated their CCleaner app between August and September last year from the official website with the backdoored version of the software. Now, it turns out that the hackers managed to infiltrate the company's network almost five months before they first replaced the official CCleaner build with the backdoored version, revealed Avast executive VP and CTO Ondrej Vlcek at the RSA security conference in San Francisco on Tuesday. 6-Months Timeline of CCleaner Supply Chain Attack Vlcek shared a brief timeline of the last year's incident that came out to be the worst nightmare for the company, detailing how and when unknown hackers breached Pi

The group of unknown hackers who hijacked CCleaner's download server to distribute a malicious version of the popular system optimization software targeted at least 20 major international technology companies with a second-stage payload. Earlier this week, when the CCleaner hack was reported , researchers assured users that there's no second stage malware used in the massive attack and affected users can simply update their version in order to get rid of the malicious software. However, during the analysis of the hackers' command-and-control (C2) server to which the malicious CCleaner versions connected, security researchers from Cisco's Talos Group found evidence of a second payload (GeeSetup_x86.dll, a lightweight backdoor module) that was delivered to a specific list of computers based on local domain names. Affected Technology Firms  According to a predefined list mentioned in the configuration of the C2 server, the attack was designed to find computer