“To the best of our knowledge, we were able to disarm the threat before it was able to do any harm,” Yung says. The company has no indication who was behind the attack, where it came from or how long it was being prepared for.
All CCleaner users are also being moved to the latest version. He says that the company has disabled the rogue server and other potential servers. Based on further analysis, we found that the version of CCleaner and the version of CCleaner Cloud was illegally modified before it was released to the public, and we started an investigation process,” comments Piriform's VP of Products, Paul Yung.
#Ccleaner malware source software
“A suspicious activity was identified on September 12th, 2017, where we saw an unknown IP address receiving data from software found in version of CCleaner, and CCleaner Cloud version, on 32-bit Windows systems. Piriform, the company behind CCleaner, posted a blog today which explains the technical details of the hack. The malware also used valid digital signatures to further mask its malicious intent. The hack was able to collect information such as the name of the computer, list of installed software and windows updates, list of running processes, MAC addresses of the first three network adapters, as well as whether the process was running with administrative privileges and whether it is a 64-bit system. On September 12, the official 5.34 version was release.
#Ccleaner malware source update
In this case, the software's update servers were compromised to deliver malware to victims and Piriform was hosting the malicious software itself.Īnyone who updated to CCleaner 5.3.3 between August 15 and September 11 is at risk of the hack. The hack called a ‘supply chain attack', banks on the trust relationship between supplier and customer. Popular ‘junk' wiper and maintenance software CCleaner has been subject to a hack that could potentially affect billions of users worldwide, according to security firm Talos.
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