However, it has come a long way since then and is probably at its strongest point in 2022. CCleaner, a malware, started featuring headlines for negative reasons as it could gather sensitive data and forward the same to a third-party US-based server.Īll this resulted in the tool getting tagged as a potentially unwanted application. Even Microsoft flagged several registry cleaning utilities that included the CCleaner Registry Cleaner as well.Īllegations around CCleaner weren’t over there. When Avast acquired the company back in 2017, the tool got hacked twice. If you don’t know, CCleaner has faced unpleasant scenarios several times. Well, make sure you stick till the end so you don’t miss out on any point that might help you make a decision about CCleaner. However, back in 2017, the platform faced negative consequences throughout the year.
#Ccleaner Pc#
We also remove the malicious installer.Looking for a cleaner for your PC/Mac? Are you not sure if CCleaner is the way to go? I’ll help you figure that out in the next couple of minutes.ĬCleaner is a PC cleaner tool that has been around for more than 15 years now.
Malwarebytes blocks the IP and domains related to this malware.
#Ccleaner download#
The latest version is available for download here.Īffected versions: CCleaner version and CCleaner Cloud version
#Ccleaner update#
If you suspect you may have downloaded CCleaner version or CCleaner Cloud version, scan your system for malware.ĬCleaner users that are running older versions or that do not trust the one they are using now are encouraged to update their CCleaner software to version 5.34 or higher. What to do if you think you are affected?įirst of all, check the version of CCleaner on your system. The malware uses a hardcoded C2 server and a domain generating algorithm (DGA) as a backup, to send information about the affected system and fetch the final payload. Other system information that is relevant for the malware like admin privileges, whether it is a 64-bit system, etc.The MAC addresses of the first three network adapters.A list of the currently running processes.A list of installed software, including Windows updates.The malware collects the following information about the infected system: In a press statement the company estimates that 2.27 million people used the affected software. The modified version, 5.33, is made available from August 15 until September 12 when version 5.34 was released. From the statistics brought out by Piriform, CCleaner has been downloaded 2 billion times in total, 5 million times every week. It is difficult to say at this moment how many users might have been affected, but the numbers could be huge. They are also investigating how the files coming from their servers were modified before being released to the public. Piriform is aware of the situation and is acting to prevent further damage. The incident was discovered and reported by Talos. In case you are wondering why they were on those servers, Avast acquired Piriform, the original publishers of CCleaner, a few months ago. Threat actors have managed to change the files that were being delivered by Avast servers hosting CCleaner updates. In a supply chain attack that may be unprecedented in the number of downloads, servers hosting CCleaner, a popular tool for cleaning up the PC, has been delivering a version of the said software with malware.
#Ccleaner 64 Bit#
The trojan itself reportedly only ran on Windows 32 bit systems, but the values above were created on 64 bit systems as well. Malwarebytes will detect the presence of those values and flag them as These values are not created by any clean versions of CCleaner, just by the infected ones.
Users that are unsure whether they were affected by this and whether their data may have been sent to the C2 server can check for the presence of the following values under the registry key: One point we should take note of is that the breach preceded the take-over of Piriform by Avast. Avast posted a clarification explaining what happened and giving a timeline of the events.
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