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Raiu also pointed out that while the code overlaps with APT17, the command-and-control infrastructure used matches that of a newer attack group.

"The code in question is a unique implementation of base64 only previously seen in APT17 and not in any public repository, which makes a strong case about attribution to the same threat actor," Rosenberg wrote in a blog post. Intezer's technology is specifically designed to find code similarities in malware. Jay Rosenberg, a researcher with security firm Intezer also confirmed that the CCleaner backdoor has code that's identical to that used in APT17's past malware tools. Cisco Systems' Talos group confirmed in a new report Wednesday that at least 20 victim machines belonging to high-profile technology companies were served such secondary payloads.

#Ccleaner malware ip address http post requests download#

The backdoor program included with CCleaner also attempted to download and execute additional malware from the command-and-control server. If the server was unreachable, the malware would generate random-looking domain names based on a special algorithm and attempt to contact those.Īn earlier version of CCleaner. The backdoor included in the 32-bit versions of CCleaner v and CCleaner Cloud v was designed to gather identifying information about the infected computers and send it to a hard-coded IP address.

The group was also behind Operation Aurora, a high-profile attack in 2009 that affected Google and over 30 other companies. Over the years, the group has hacked into government entities, non-government organizations, law firms and companies from various industries, including defense, information technology and mining. Piriform was acquired in July by antivirus maker Avast.Īs far as the malicious code found in CCleaner is concerned, there is overlap with APT17/Aurora, Costin Raiu, director of the Global Research and Analysis Team at antivirus vendor Kaspersky Lab, who analyzed the malware, told me.ĪPT17, also known as DeputyDog, is a cyberespionage group that has been operating for over a decade.

The fact that the malicious code was added to CCleaner before it was compiled suggests that hackers gained access to the development infrastructure of Piriform, the company that makes the tool. These malware-laden programs were distributed between August 15 and September 12. If you have questions or want to learn more, please contact Secure Sense by calling 86.On Monday, it was revealed that the official and digitally signed installers for two versions of CCleaner-a utility for removing temporary files and invalid registry entries on Windows computers-contained a backdoor program capable of installing additional malware. Connect with Secure Sense to protect data, improve your posture and systems 24/7, 365 days a year.

#Ccleaner malware ip address http post requests update#

Should you happen to be one of the millions of users that downloaded the infected version 5.33, your best bet is to head to Piriform’s website here and update to the latest iteration of CCleaner.

#Ccleaner malware ip address http post requests software#

“We estimate that 2.27 million users had the affected software installed on 32-bit Windows machines,” she further added. It would have been an impediment to the law enforcement agency’s investigation to have gone public with this before the server was disabled and we completed our initial assessment,” it added.Ī spokeswoman for security giant Avast, which acquired the UK-based company back in July, told us: “We believe that these users are safe now as our investigation indicates we were able to disarm the threat before it was able to do any harm.” “Working with US law enforcement, we caused this server to be shut down on the 15th of September before any known harm was done. “We have no indications that any other data has been sent to the server,” it writes. The malware was supposedly capable of harvesting various types of data from infected machines - specifically, Piriform says: the computer name, IP address, list of installed software, list of active software and list of network adapters (data it describes as “non-sensitive”) - transmitting it to a third party computer server located in the US.

#Ccleaner malware ip address http post requests android#

Users of a free software tool designed to optimize system performance on Windows PCs and Android mobile devices got a nasty shock this morning when Piriform, the company which makes the CCleaner tool, revealed in a blog post that certain versions of the software had been compromised by hackers - and that malicious, data-harvesting software had piggybacked on its installer program. By Secure Sense The popular and free software, CCleaner has been reported to have infected 2.27 million users with malware.