Threat Database Viruses W32.Sality.PE

W32.Sality.PE

By GoldSparrow in Viruses

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 2
First Seen: January 23, 2012
Last Seen: February 18, 2022
OS(es) Affected: Windows

The W32.Sality.PE virus was first discovered in the summer of 2003. However, as of 2011 W32.Sality.PE was still among the most widespread virus infection online. The criminals behind W32.Sality.PE have updated W32.Sality.PE continually since its creation. W32.Sality.PE has the ability to infect files corrupting executable files (with the EXE extension) on all detected drives. W32.Sality.PE also integrates the victim's computer into a peer-to-peer botnet, connects to remote servers and has the ability to download files and set them up on the victim's computer. According to ESG security researchers, W32.Sality.PE also has the ability to detect the presence of the most popular anti-virus software and to disable it.

A General Description of W32.Sality.PE' Functionality

Present versions of W32.Sality.PE are not the same as those that originated in the Russian Federation in 2003. The original version of W32.Sality.PE was a basic file infector with keylogging capabilities. Present versions of W32.Sality.PE have sophisticated spreading mechanisms and the creation of a vast network that is made up of computer systems infected with W32.Sality.PE. In order to infect a file, W32.Sality.PE overwrites the infected file with a complex set of instructions in an obfuscated code. This makes it difficult for PC security researchers to understand exactly how the virus works. The virus itself is added to the last section of the infected file.

The W32.Sality.PE Botnet and Self-Protective Measures

The main goal of W32.Sality.PE is to download another kind of malware from a remote server, receiving the URLs for these malicious file downloads through its peer-to-peer botnet. These malicious URLs form a convoluted network of links, usually points to additional URLs with several steps between W32.Sality.PE and the malicious files it downloads. This is designed to counter some of the protective measures enacted by PC security analysts. As a way to protect itself, W32.Sality.PE changes security configurations in the infected computer's Windows Registry as well as detects the presence of anti-virus software, which W32.Sality.PE can then disable. One of the most dangerous aspects of W32.Sality.PE is its ability to alter Windows' Safe Mode, ensuring that W32.Sality.PE stays on the victim's computer. This virus is also highly invasive, attempting to inject itself into nearly all running processes on the infected system.

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