Backdoor.Win32.Hupigon.fixn

31 July 2009 Popup 2 Comments

Trojan Backdoor.Win32.Hupigon.fixn

Backdoor.Win32.Hupigon is a backdoor module of Trojan Win32.Hupigon. It opens a backdoor entry on compromised computer that serves as an opening for a remote attacker to fully access the system. Backdoor.Win32.Hupigon will hide its presence once on the system, probably to avoid antivirus detection.

Alias: DR_HUPIGON, Win32/Pigeon, Backdoor.Win32.Hupigon, W32/Hupigon, Troj/Feutel

Damage Level: Medium

Systems Affected: Windows 9x, 2000, XP, Windows Vista

Characteristics

• This Trojan registers its component as a legitimate service to conceal itself from antivirus programs.
• Backdoor.Win32.Hupigon can communicate to a remote server and confirms to author about the infection.
• Once on the computer, it can install other components that may steal sensitive information by recording key presses. Gathered data is sent on a scheduled basis either via email or file transfer protocol.

Distribution
Backdoor.Win32.Hupigon infects a computer by exploiting software and security vulnerabilities. It may also pretend as software updates to invite execution by innocent target.

Rogue Software and Backdoor.Win32.Hupigon.fixn

Backdoor.Win32.Hupigon.fixn is a threat identified on security alert issued by a fake program Windows Antivirus Pro to mislead computer users. A rogue security application employs this continuing process of confusing pop-up alerts in an attempt to further influence user’s decision in considering the endorse program as the necessary tool to remove threats and other sorts of infection.

Objective of this deceiving tactic is to convince user to obtain a paid copy of said rogue software. The full message reads:

Windows Antivirus Pro has denied Internet access of the program.
Internet Explorer is possible injected with worm Backdoor.Win32.Hupigon.fixn. This worm
attempts to send your personal information to remote host thought Internet Explorer.

Screenshot Image:

1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. Open your antivirus application and update the virus definition file. This method ensures that your antivirus program can detect even newer variants of Backdoor.Win32.Hupigon.fixn

3. Start Windows in Safe Mode with Networking.
- From a power-off state, turn on the computer and press F8 on your keyboard repeatedly.
- Your computer will display Windows Advanced Boot Options menu. Please select Safe Mode with Networking.
- The system will now boot Windows and loads only necessary drivers and files.

4. Open your antivirus program and run a full system scan. After the scan, delete all infected items. If unable, better place them in quarantine. Once the scan is complete, please proceed with the next step.

Online Virus Scanner:

Another way to remove Backdoor.Win32.Hupigon.fixn without the need to install additional antivirus application is to perform a thorough scan with free online virus scanner that can be found here or on websites of legitimate anti-virus and security provider.

5. Go to Online Virus Scanner list and run a virus scan. This may require plug-ins, add-on or Activex object, please install if you want to proceed with scan.
6. After completing the necessary download, your system is now ready for online virus scanning.
7. Select an option in which you can thoroughly scan the computer to make sure that it will find and delete entirely all infections not detected on previous scan.
8. Remove or delete all detected items.
9. When scanning is finished you may now restart the computer in normal mode.