Ccleaner piriform 5.33
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From the above post I can see that it is the 32-bit version of the CCleaner software that is affected. However, what about the "2nd payload" mentioned in the blog post? Was this actually downloaded or just potentially could have been downloaded if set to do so? If it is downloaded somewhere, is it in a separate location as the files affected or in the same location and will it too be removed? Clarification on this would be good.Ģ) The blog post mentions it is the 32-bit version of Windows that is affected. A few I can think of are:ġ) Will updating to the latest software version remove the infected files? I assume it will as it were those particular files that were affected. I think those who have/may have installed the version identified have many questions. I am not particularly knowledgeable on such situations. This is information that we both need to know! At best, the numbers match and the customer is at ease - at worst, the numbers don't match and a second attack vector was discovered. The single best thing they can do right now is confirm the integrity of their file. What they know is one product took a bullet and that makes it conceivable that others may have been lined with it. A customer doesn't have inside knowledge, they don't know if it was a funny prank by an employee or a serious breach. Anyhow, my point is this, we both know at least one dangerous file was hosted, as your customer, I cannot confirm if the file I got last week is clean. I'm certain you know what I mean, if the customer is installing one piece of software and loses concentration then they may click a button without unchecking a box - and end up with CCleaner on their system.
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I did not download CCleaner but I recognized the name immediately because it was "included" with one of your products last week.
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The blogpost also contains a full list of IOCs (Indicators of Compromise - in this case a list of files whose existence show that a system has at one time been compromised by this attack).įuture announcements will be made on the Piriform and Avast blogs. This third progress confirms how many and which companies were specifically targeted by the attack and present a hypothesis on the origin of the perpetrator(s).
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It also shares some clues as to the identity of the perpetrators.Īvast blog: Investigation Progress Update #3 by Avast Threat Labs team (Monday, 25 September 2017)
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This second progress update explains why only part of the command & control server logs were recovered and provides yet deeper technical understanding of the way the malicious code was put together. This blogpost reveals more information regarding the target of the attack and more technical details about how the compromise behaves.Īvast blog: Investigation Progress Update #2 by Avast Threat Labs team (Thursday, 21 September 2017) This blogpost confirms the timeline of events surrounding the detection, investigation and announcement of the compromise what precautions we are advising customers to take and what information we are basing this on and what precautions we are taking to ensure this does not happen again.Īvast blog: Investigation Progress Update #1 by Avast Threat Labs team (Thursday, 21 September 2017) Piriform blog: Security Notification with Technical Overview (Monday, 18 September 2017)Ī similar announcement to the above, aimed at a technical audience and revealing technical details about the nature of compromise.Īvast blog: Follow-Up Announcement by Avast CEO & CTO (Tuesday, 19 September 2017) Security Notification for a general audience. Piriform blog: Security Notification for CCleaner version (Monday, 18 September 2017) We apologize and are taking extra measures to ensure this does not happen again.įor further information, please read the official announcements linked below.ĬCleaner v5.33 and CCleaner Cloud v1.07 Security FAQ We encourage all CCleaner users to download the latest version of CCleaner: here. 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 recently determined that these versions of our software had been compromised. We resolved this quickly and believe no harm was done to any of our home users, but we do have evidence that this has targeted large technology and telecommunication companies in Japan, Taiwan, UK, Germany and the US. We would like to apologise for a security incident that we have recently found in CCleaner version and CCleaner Cloud version.