![]() 19, Avast says that 730,000 users are still using the affected version. The Android version for phones doesn't seem to be affected. The versions that were affected are CCleaner v or CCleaner Cloud v for 32-bit Windows PCs. How do I know if I have the corrupted version? The company believes that they were able to disarm the malware before any harm was done. Specifically, computers running 32-bit Windows 10 ( $149 at Amazon). 15.Īround 3 percent - roughly 2.27 million computers - used the infected software. The compromised version of CCleaner software was then released to customers on Aug. Who was infected?Īccording to information provided by Avast CEO Vince Steckler and Consumer Business CTO and EVP Ondrej Vlcek, the compromise to the system may have started as early as July 3, prior to Avast buying the company. "Working with US law enforcement, we caused this server to be shut down on the 15th of September before any known harm was done," said the company in the announcement. Your credit card numbers, social security number and the like seem to be safe. It gathers information like your IP address, computer name, a list of installed software on your computer, a list of active software and a list of network adapters and sends it to a third-party computer server. If you use CCleaner, here's what you need to know. Monday, the company that makes CCleaner, Avast's Piriform, announced that its free software was infected with malware. Computer-optimization software is supposed to keep your computer running smoothly. CCleaner does not have an auto-update system, so users must download and install CCleaner 5.34 manually.Īvast said it already pushed an update to CCleaner Cloud users, and they should be fine. Updating CCleaner to v5.34 removes the old executable and the malware. The malware was embedded in the CCleaner executable itself. How do I remove the Floxif or CCleaner Malware? The malware could also download and execute other malware, but Avast said it did not find evidence that attackers ever used this function. The malware - named Floxif - collects data from infected computers, such as computer name, a list of installed software, a list of running processes, MAC addresses for the first three network interfaces, and unique IDs to identify each computer in part. It will only replace the malicious executables with legitimate ones so that the malware is no longer present. as seen below, upgrading to version 5.34 will not remove the Agomo key from the Windows registry. If it does, then you are infected with this malware. You can use Registry Editor to navigate to the Agomo key and see if it exists. ![]() Under this key will be two data values named MUID and TCID, which are used by the installed Floxif infection. When an infected version of CCleaner was installed it would have created a Windows Registry key located at HKEY_LOCAL_MACHINE\SOFTWARE\Piriform\Agomo. The files were available for download between August 15 and September 12.Įverybody who downloaded and installed the affected versions in that timespan.Īvast estimates the number of affected machines at 2.27 million. The attacker added malware to the CCleaner and CCleaner Cloud installers, but the malware only executed on 32-bit systems and when run by a user with admin rights. For a full recap of what happened, you can read our complete CCleaner coverage.Īn unknown threat group compromised the CCleaner infrastructure. This is a small guide and FAQ on the malware installed alongside CCleaner.
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