A malware scan to check if the system has been compromised is also highly recommended.
The incident is still undergoing investigation, where both Piriform and Avast are still working to clarify how and why the hack that affected millions of their users took place in the first place.Īll affected users are urged to download CCleaner v5.34 as soon as possible. All the collected information was encrypted and sent to a remote server in the US. Not surprisingly, the backdoor could collect sensitive information about the breached systems, consisting of name of the computer, its IP address, list of installed software, running processes and such.
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In fact, it was a “ a two-stage backdoor capable of running code received from a remote IP address on affected systems,” as depicted by Paul Yung, Piriform’s VP of Products. The executable that was flagged was signed with a valid digital certificate issued to Piriform, researchers explain, but it had an additional payload. Cisco researchers were beta testing a new exploit detection technology when they came across the bothersome finding. Related Story: Latentbot – the Advanced Backdoor with Stealthy Capabilities How Was the Hack Discovered?Ĭisco was the first company to acknowledge that there was something wrong with the program. It’s also not a secret that the program’s weekly installations are more than 5 million. 2016 numbers show that the total number of downloads is approximately 2 billion. The popularity of the program among users worldwide is still a widely known fact, which means millions of users were affected. However, no actual numbers were revealed. How and Why Was CCleaner Backdoored? How Many Users Are Affected?Īccording to Piriform’s internal statistics, up to 3% of their users use the two versions of the software. Piriform also encourages all users of the 32-bit version of CCleaner v to download v5.34 immediately.
No other Piriform or CCleaner products were affected. This compromise only affected customers with the 32-bit version of the v of CCleaner and the v of CCleaner Cloud. We resolved this quickly and believe no harm was done to any of our users. We recently determined that older versions of our Piriform CCleaner v and CCleaner Cloud v had been compromised. Here is what Piriform has stated on the matter:
#Ccleaner cloud v1.07.3191 update
CCleaner Cloud users should have gotten an update already, but if you use CCleaner and don.
Apparently, the 32-bit version of v of CCleaner and the v of CCleaner Cloud were breached. The infected payload affects two CCleaner products CCleaner v and CCleaner Cloud v. Nonetheless, the hack has been confirmed by Piriform, the developer company that was recently acquired by Avast. September 12 - Morphisec notifies Avast and Cisco of the suspicious CCleaner activity. September 11 - Morphisec customers share detection logs detailing CCleaner-related malicious activity with the company's engineers. Unfortunately, researchers still haven’t figured out the details surrounding the event, and it’s still unknown how it happened. August 24 - Piriform releases CCleaner Cloud v that also includes the Floxif trojan.
#Ccleaner cloud v1.07.3191 Pc
CCleaner, ‘the world’s most popular PC cleaner’ has been backdoored, researchers confirmed.
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