REDDIT CCLEANER MALWARE SOFTWARE
REDDIT CCLEANER MALWARE CODE
REDDIT CCLEANER MALWARE DOWNLOAD
REDDIT CCLEANER MALWARE WINDOWS

The PE loader first begins by resolving the addresses of imports commonly used by loaders and calling them. Data is read from the PE header, from a module created by the malware author. A PE file loader basically emulates the process of what happens when you load an executable file on Windows.

REDDIT CCLEANER MALWARE CODE

The flow-graph of the malicious CCleaner is as follows (taken from the Talos report):Īfter the embedded code is decrypted and executed, the next step is a PE (portable executable) file loader. The infected CCleaner file that begins the analysis is from 6f7840c77f99049d788155c1351e1560b62b8ad18ad0e9adda8218b9f432f0a9Ī technical analysis was posted by Talos here ( ). The previous attacks are attributed to a Chinese group called PLA Unit 61398. Operation Aurora started in 2009 and to see the same threat actor still active in 2017 could possibly mean there are many other supply chain attacks by the same group that we are not aware of. In this case, they probably were able to hack CCleaner’s build server in order to plant this malware. APT17, also known as Operation Aurora, is one of the most sophisticated cyber attacks ever conducted and they specialize in supply chain attacks. 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.

REDDIT CCLEANER MALWARE SOFTWARE

With our technology, we can compare code to a huge database of malicious and trusted software - that’s how we can prove that this code has never been seen before in any other software.Ī deeper analysis leads us to the functions shown below. The photo below is the result of uploading the CCBkdr module to Intezer Analyze™, where the results show there is an overlap in code. Using Intezer Analyze™, we were able to verify the shared code between the backdoor implanted in CCleaner and earlier APT17 samples. The malware injected into #CCleaner has shared code with several tools used by one of the APT groups from the #Axiom APT 'umbrella'. The official statement from Avast can be found here The Big Connection:Ĭostin Raiu, director of Global Research and Analysis Team at Kaspersky Lab, was the first to find a code connection between APT17 and the backdoor in the infected CCleaner: Through somewhere that had access to the source code of CCleaner, the main executable in v had been modified to include a backdoor. A backdoor, inserted into legitimate code by a third party with malicious intent, leads to millions of people being hacked and their information stolen.Īvast’s CCleaner software had a backdoor encoded into it by someone who had access to the supply chain. You may have the most up to date cyber security software, but when the software you are trusting to keep you protected gets infected there is a problem. Of the millions of infected PCs, only a few received the truly nasty second-stage payload that handed the computer over to miscreants.Recently, there have been a few attacks with a supply chain infection, such as Shadowpad being implanted in many of Netsarang’s products, affecting millions of people. The shutdown happened three days after Israeli security firm Morphisec alerted CCleaner owner Avast to the scandal. The compromised CCleaner builds, such as v5.33, were distributed from August 2, and CCleaner Cloud from August 11, until August 25, and connected to a command-and-control server, used to orchestrate the malware, until September 15 when the box was taken down. This was absolutely a highly targeted espionage caper, it appears.

REDDIT CCLEANER MALWARE DOWNLOAD

Nearly 2.3 million computers ended up installing the dodgy version of the tool, and 40 – within companies such as Intel, VMware, Samsung, NEC and Sony – were instructed to download malicious code to commandeer the boxes.

REDDIT CCLEANER MALWARE WINDOWS

The widely used utility, which removes unwanted temporary files and registry keys on Windows machines, was backdoored with malicious code in August, as in, miscreants tampered with the software's downloads to introduce a means to remotely control PCs running the code. VB2017 Avast staffers spoke at the Virus Bulletin International Conference in Madrid, Spain, on Thursday to shed more light on their postmortem of the CCleaner fiasco – and urge developers to protect their software's toolchain and distribution systems from hackers.

Reddit ccleaner malware