Win32/Sirefef.DV

Win32/Sirefef.DV Description

Type: Trojan

Win32/Sirefef.DV is a Trojan that establishes a hole in the infected computer's security. This kind of hole is often referred to as a 'backdoor'. A backdoor Trojan is the equivalent of leaving a back door open so that a thief may enter a building undetected. Likewise, Win32/Sirefef.DV leaves a hole in the victim's security which a hacker can then utilize to take control of the infected PC system without being detected. Through this backdoor, a criminal can install other malware onto the victim's computer, take over the computer and use it for illegal purposes or steal the victim's information. Because of this, malware infections such as Win32/Sirefef.DV are extremely dangerous and are widely considered being severe threats to computer users' privacy. According to ESG security researchers, any sign of a Win32/Sirefef.DV Trojan infection should be treated as a potential intrusion into your privacy and the open backdoor should be closed as soon as possible. Because of this, manual removal of Win32/Sirefef.DV is not recommended. It is not enough to remove this malware infection, it is also important to identify any unauthorized open ports or other potential security holes put into effect by Win32/Sirefef.DV and then close them.

Protecting Yourself from Win32/Sirefef.DV

Unlike viruses or worms, Win32/Sirefef.DV cannot spread by itself. It is a dangerous invader that requires the user himself to allow it to enter. Typically, Win32/Sirefef.DV will make use of another malware infection to enter your computer or will be included in phishing email scams as a deceptive file attachment. Because of this, the best protection against Win32/Sirefef.DV is learning to recognize risky situations and the potential for an infection before the infection occurs. ESG security researchers recommend using a reliable anti-malware program and to keeping it fully updated and running at all times. ESG security researchers also recommend following basic computer security guidelines such as staying away from unsafe websites, never downloading unknown files or clicking on unknown links and never opening file attachments contained in unsolicited email messages. Once your computer is infected with Win32/Sirefef.DV, it can remain on your system indefinitely without your knowledge. Because of this, prevention is the key to making sure that a backdoor is not opened into your computer system.

Technical Information

File System Details

Win32/Sirefef.DV creates the following file(s):
# File Name Detection Count
1 %Temp%\[RANDOM CHARACTERS].exe N/A
2 %UserProfile%\Start Menu\Programs\Win32/sirefef.dv\Uninstall Win32/sirefef.dv.lnk N/A
3 %UserProfile%\Start Menu\Programs\Win32/sirefef.dv\ N/A
4 %UserProfile%\Desktop\Win32/sirefef.dv.lnk N/A
5 %UserProfile%\Start Menu\Programs\Win32/sirefef.dv\Win32/sirefef.dv.lnk N/A

Registry Details

Win32/Sirefef.DV creates the following registry entry or registry entries:
Registry key
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "WarnonBadCertRecving" = '0'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments "SaveZoneInformation" = '1'
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download "CheckExeSignatures" = 'no'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced "ShowSuperHidden" = 0'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "CertificateRevocation" = '0'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations "LowRiskFileTypes" = '/{hq:/s`s:/ogn:/uyu:/dyd:/c`u:/bnl:/ble:/sdf:/lrh:/iul:/iulm:/fhg:/clq:/kqf:/`wh:/lqf:/lqdf:/lnw:/lq2:/l2t:/v`w:/rbs:'
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system "DisableTaskMgr" = '1'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced "Hidden" = '0'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"Windows" = "%Temp%\[ RANDOM CHARACTERS].exe"
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop "NoChangingWallPaper" = '1'
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System "DisableTaskMgr" = '1'
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main "Use FormSuggest" = 'yes'

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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 computer. Spyware changes regularly; therefore, it is difficult to fully clean an infected machine through manual means.