The versions that were affected are CCleaner v or CCleaner Cloud v for 32-bit Windows PCs. How do I know if I have the corrupted version? The company believes that they were able to disarm the malware before any harm was done. Specifically, computers running 32-bit Windows 10 ( $62 at Walmart).
15.Īround 3 percent - roughly 2.27 million computers - used the infected software.
The compromised version of CCleaner software was then released to customers on Aug. Who was infected?Īccording to information provided by Avast CEO Vince Steckler and Consumer Business CTO and EVP Ondrej Vlcek, the compromise to the system may have started as early as July 3, prior to Avast buying the company. "Working with US law enforcement, we caused this server to be shut down on the 15th of September before any known harm was done," said the company in the announcement. Your credit card numbers, social security number and the like seem to be safe. It gathers information like your IP address, computer name, a list of installed software on your computer, a list of active software and a list of network adapters and sends it to a third-party computer server. If you use CCleaner, here's what you need to know. Monday, the company that makes CCleaner, Avast's Piriform, announced that its free software was infected with malware. Meanwhile, Avast’s own figures show roughly 2.27 million users ran the infected software – a small but significant percentage of the app’s 2 billion downloads.Computer-optimization software is supposed to keep your computer running smoothly.
Piriform acknowledged that the compromise could cause the transmission of information, such as computer name, IP address, list of installed software, list of active software, list of network adapters, to a third-party computer server in the US. “An unauthorized modification of the CCleaner.exe binary resulted in an insertion of a two-stage backdoor capable of running code received from a remote IP address on affected systems,” Paul Young, VP of Products at Piriform, explained in a blog post. However, on September 13, Cisco Talos researchers detected a multi-stage malware payload in the 32-bit versions of CCleaner v and CCleaner Cloud v. Researchers have discovered that certain versions of the popular CCleaner app were modified by hackers to deliver malware to millions of unsuspecting users.Ĭreated by Piriform and recently acquired by security firm Avast, the application allows users to perform routine maintenance on their systems, including the cleaning of temporary files and analyzing the system for performance optimization.
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