![ccleaner malware 5.35 ccleaner malware 5.35](https://www.redeszone.net/app/uploads-redeszone.net/2017/09/Ccleaner-5.35-655x504.png)
Within the registry is a lightweight backdoor module which is run by the trojanized files. This may complicate detection on some systems since the executable files are never stored directly on the file system. This PE performs queries to additional C2 servers and executes in-memory PE files.
Ccleaner malware 5.35 update#
Now, a new statement posted on the Piriform website, says that 'CCleaner version 5.35 has been released with a new digital signature', in order to update their systems.
![ccleaner malware 5.35 ccleaner malware 5.35](https://www.bleepstatic.com/content/posts/2017/09/18/CCleaner-Logo.jpg)
The purpose of the trojanized binary is to decode and execute this PE in registry. Well, as you may have read our previous article, a hacked version of CCleaner 5.33 was being distibuted from its official servers, which collected data from PCs it was installed on. HKLM\Software\Microsoft\Windows NT\CurrentVersion\WbemPerf\004 HKLM\Software\Microsoft\Windows NT\CurrentVersion\WbemPerf\003 HKLM\Software\Microsoft\Windows NT\CurrentVersion\WbemPerf\002 HKLM\Software\Microsoft\Windows NT\CurrentVersion\WbemPerf\001 Additionally, the setup put an encoded PE in the registry :
Ccleaner malware 5.35 Patch#
None of the files that are dropped are signed or legitimate.Įffectively, they patch a legitimate binary to package their malware. Although version 5.34 is malware free, we wanted to go the extra step and issue a new certificate and hence the version bump to 5.35. Affected versions: CCleaner version and CCleaner Cloud version. The latest version is available for download here. 'The attack affected a total of 2.27 million computers between August 15, 2017, and September 15, 2017, and used the popular PC cleaning software CCleaner version as a distribution. The 圆4 version drops a trojanized EFACli64.dll file named SymEFA which is the filename taken from a legitimate executable that is part of "Symantec Endpoint". CCleaner users that are running older versions or that do not trust the one they are using now are encouraged to update their CCleaner software to version 5.34 or higher. Hi to everyone I used Avast for many years and never have any problem.Yesterday i have my first one.I noticed that all the folders in my external H.D.D appears as shortcut.I checked if the files had been erased but the capacity of my HDD remained the same before had been infected by this malware. The x86 version is using a trojanized TSMSISrv.dll, which drops VirtCDRDrv (which matches the filename of a legitimate executable that is part of Corel) using a similar method to the backdoored CCleaner tool. This installer checks the OS version and then drops either a 32-bit or 64-bit version of a trojanized tool. The stage 2 installer is GeeSetup_x86.dll.