The majority of users on the Internet tend to neglect updating their software and their operating systems. It may be a tedious task to keep all your applications up to date, but it is necessary if you want to keep malware away from your system. Since there are so many people who fail to do this, cyber crooks have tailored special malware targeting systems running outdated software or outdated operating systems.
Exploits Almost Decade-Old Vulnerabilities
This is the case with the Asruex backdoor Trojan. The Asruex Trojan has been pestering users for years. If this threat manages to infiltrate your system, it has the full capabilities to gain complete control over your PC. What is even worse is that cybercriminals appear to have developed a new, updated variant of the Asruex backdoor Trojan. This strain of the Asruex Trojan takes advantage of vulnerabilities in outdated versions of common applications like Microsoft Office, Adobe Reader, and Adobe Acrobat. These known vulnerabilities are sometimes about ten years old, but there is still a large swab of people who are running this outdated software.
The propagation method employed by the authors of the Asruex Trojan is spam email campaigns. The emails would contain a macro-laced Microsoft Word file or a PDF. Once the user opens the attachment, they are asked to approve the use of macro scripts. If they fall for this trick and give the permission requested they will trigger the downloading and subsequent execution of the Asruex backdoor Trojan.
Self-Preservation and Persistence
As a self-preservation technique, the Asruex Trojan is capable of distinguishing normal computers and sandbox environments. It is capable of doing this by scanning Registry entries and configurations, which can indicate the presence of software used for malware debugging. When the Asruex backdoor Trojan confirms that it has infiltrated a regular system, it will gain persistence by tampering with the Windows Registry. Next, the Asruex Trojan will establish a connection with the attackers' C&C (Command & Control) server.
Once these steps are completed, the Asruex backdoor Trojan will be able to:
- Collect information.
- List services and processes that are running.
- Download files.
- Upload files.
- Execute files.
- Browse files.
- List files.
- Modify files.
- Plant additional threats.
Users need to understand how crucial it is to keep their software up-to-date because otherwise, they just serve their systems and their data on a silver platter to whoever wishes to take advantage. Also, they should make sure to download and install a legitimate anti-virus software tool to keep their systems secure.
Do You Suspect Your PC May Be Infected with Asruex & Other Threats? Scan Your PC with SpyHunterSpyHunter is a powerful malware remediation and protection tool designed to help provide PC users with in-depth system security analysis, detection and removal of a wide range of threats like Asruex as well as a one-on-one tech support service. Download SpyHunter's FREE Malware Remover
Security Doesn't Let You Download SpyHunter or Access the Internet?Solutions: Your computer may have malware hiding in memory that prevents any program, including SpyHunter, from executing on your computer. Follow to download SpyHunter and gain access to the Internet:
- Use an alternative browser. Malware may disable your browser. If you're using IE, for example, and having problems downloading SpyHunter, you should open Firefox, Chrome or Safari browser instead.
- Use a removable media. Download SpyHunter on another clean computer, burn it to a USB flash drive, DVD/CD, or any preferred removable media, then install it on your infected computer and run SpyHunter's malware scanner.
- Start Windows in Safe Mode. If you can not access your Window's desktop, reboot your computer in "Safe Mode with Networking" and install SpyHunter in Safe Mode.
- IE Users: Disable proxy server for Internet Explorer to browse the web with Internet Explorer or update your anti-spyware program. Malware modifies your Windows settings to use a proxy server to prevent you from browsing the web with IE.
This article is provided "as is" and to be used for educational information purposes only. By following any instructions on this article, you agree to be bound by the disclaimer. We make no guarantees that this article will help you completely remove the malware threats on your PC. Spyware changes regularly; therefore, it is difficult to fully clean an infected machine through manual means.