#CCLEANER CLOUD USING TOO MUCH BANDWIDTH UPDATE#
#CCLEANER CLOUD USING TOO MUCH BANDWIDTH UPGRADE#
#CCLEANER CLOUD USING TOO MUCH BANDWIDTH SOFTWARE#
#CCLEANER CLOUD USING TOO MUCH BANDWIDTH CODE#
#CCLEANER CLOUD USING TOO MUCH BANDWIDTH PC#

With reports like these, it is becoming a challenge to predict what hackers will target next. We will be sure to keep you posted as soon as Piriform publishes the results of its ongoing investigation.

#CCLEANER CLOUD USING TOO MUCH BANDWIDTH UPDATE#

The rate at which these users update to newer versions of the program is highly variable and the malware could still lurk around even though the rogue server in question has been disbanded. However, the fact that nearly 2.3 million users were affected is still a serious concern.

#CCLEANER CLOUD USING TOO MUCH BANDWIDTH UPGRADE#

The company is urging all users to upgrade to version 5.34, which contains the correct clean code.

The action of the second-stage payload is not yet detected.Īt this stage, Piriform is cautious not to speculate too much into how its binaries were compromised and is apparently taking actions to prevent it from happening again.

All this information was encrypted and transmitted to a remote address (.x), which then sent a second-stage payload containing further encrypted information.

#CCLEANER CLOUD USING TOO MUCH BANDWIDTH SOFTWARE#

It collected a host of information about the infected system including its name, software installed, MAC addresses etc.

#CCLEANER CLOUD USING TOO MUCH BANDWIDTH CODE#

Piriform says that the suspicious code stored certain information in the registry key, HKLM_Software_Piriform_Agomo that also included the IP address of the Command and Control (CnC) server. The highly obfuscated illegal code created a 16KB DLL that executed in a separate thread and continued to run in the background while the actual program was being run. Of particular importance is the fact that the original binary had a valid digital certificate, which could imply that Piriform's certification process itself was compromised. Hackers inserted a two-stage backdoor that could remotely execute code and transmit back user info in an encrypted form. In a technical blog post, Paul Yung, VP, Products from Piriform, detailed about the illegal code modification that affected nearly 2.27 million users of the product. This led to the conclusion that the program's binary was illegally modified to transmit user info to the hacker. On September 12, certain 32-bit versions of CCleaner () and CCleaner Cloud () were found to transmit data to an unknown IP address, prompting Piriform to start an investigation in collaboration with Avast Threat Labs.

The malware is a backdoor that disguised itself within the app's runtime and therefore, went largely unnoticed until Piriform noticed something suspicious.

#CCLEANER CLOUD USING TOO MUCH BANDWIDTH PC#

In addition to being installed on more than 2 million systems, the CCleaner malware is dangerous because it can place a backdoor on infected systems that appears legitimate because it is signed with one of Piriform's own digital certificates.CCleaner, the popular PC cleaning app from Piriform (now part of Avast), has been found to be infected with malware that can potentially sniff out user data in the background without the user even knowing it. However, enterprises that didn't have the software auto-updated needed to manually remove it from the impacted systems. From the nearly 2.27 million systems that installed the impacted CCleaner, only 40 systems were infected, and most of the systems that installed the impacted CCleaner got an auto-update from Avast that removed the malicious version - showing one perk of auto-updates. Morphisec notified Avast of suspicious connections from CCleaner, prompting an investigation.Īny time an enterprise is notified of an attack that it didn't internally detect, it is a bit concerning, but not surprising. Given that CCleaner is used so widely, it's a target for a watering hole attack.Ī recent watering hole attack was disclosed in detail by Avast Software, Morphisec and Cisco, and it described how an attacker was able to gain access to Piriform Software Ltd.'s software development environment to add malware to the legitimate CCleaner software - Avast acquired Piriform last summer. CCleaner software is usually only installed on a few endpoints in an enterprise, but the organization could lose track of the software. Sometimes, the help desk will use tools to investigate an endpoint that may have been infected with malware, and one of those tools is CCleaner. Some software may be managed by the enterprise, some may be used by the help desk to fix systems, and some may be used by employees without the knowledge or approval of the enterprise IT department. One common security recommendation is to know what software or systems your enterprise is using so that you know what needs to be secured. Software and supply chain security are critical parts of an enterprise's information security program.

Ccleaner cloud using too much bandwidth