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- #CCLEANER CLOUD MALWARE INSTALL#
- #CCLEANER CLOUD MALWARE SOFTWARE#
- #CCLEANER CLOUD MALWARE DOWNLOAD#
Users of CCleaner Cloud version have received an automatic update. Before delving into the technical details, let me say that the threat has now been resolved in the sense that the rogue server is down, other potential servers are out of the control of the attacker, and we’re moving all existing CCleaner v users to the latest version. We also immediately contacted law enforcement units and worked with them on resolving the issue. "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. Latest update: Avast blocked the server connected to malware.There's a lot of detail regarding this in an official post on Piriform's blog:
#CCLEANER CLOUD MALWARE SOFTWARE#
#CCLEANER CLOUD MALWARE DOWNLOAD#
In summary, download CCleaner 5.34 here and reinstall immediately if you are using the affected CCleaner 5.33 version. Users also do not notice anything unusual because every installation operation is done automatically like normal. Furthermore, the hacker used the Domain Generation Algorithm (DGA) so that if their server crashed, the DGA could create new domain names and send stolen information. Why does antivirus software not detect this malware?ĬCleaner binaries include malware signed by a valid digital certificate issued by Symantec to Piriform, so antivirus software does not notice the difference and therefore does not detect malware. However, updating to version 5.34 is necessary, If you are using a low-powered account and installing CCleaner 5.33, you are not affected much. Malware is only executed if the user is using the Administrator account.
#CCLEANER CLOUD MALWARE INSTALL#
CCleaner does not have an automatic update system, so users must download and install CCleaner 5.34 manually.Īvast said it has released an update for CCleaner Cloud users, and there is no problem with malware being detected. Updating CCleaner to version 5.34 will remove old executables and malware. Malware is embedded directly into CCleaner's executable file. The malware also downloads and executes another malware, but Avast said it found no evidence that hackers used it. The first interface and unique IDs to identify each computer. This malware is called Floxif, collecting data from infected computers, such as computer name, list of installed software on the computer, list of running processes on the computer, MAC address for 3 networks. Avast estimates the number of affected machines up to 2.27 million. Those who have downloaded and installed CCleaner and CCleaner Cloud during the above period. Users who have installed CCleaner during this time are likely to have become victims of the attack. These files are available for download from August 15 to September 12. An unknown hacker group attacked CCleaner's infrastructure and added malware to the 32bit versions of CCleaner and CCleaner Cloud.