Trojan:win64/Sirefef.E

Trojan:win64/Sirefef.E Description

Trojan:win64/Sirefef.E is a dropper Trojan and a backdoor Trojan that’s structurally very similar to TrojanDropper:Win32/Sirefef.B. Unlike its relative, however, Trojan:win64/Sirefef.E specializes in attacking 64-bit Windows computers and may not be a serious threat to computers that use 32-bit operating systems. SpywareRemove.com malware researchers have found that Trojan:win64/Sirefef.E infections are often found along with rootkits and scamware programs as well; these secondary infections can cause the symptoms of a Trojan:win64/Sirefef.E attack to vary greatly in scope and type. However, all Trojan:win64/Sirefef.E infections should be considered serious threats, since they’re capable of attacking your security settings and may even disable unrelated types of software, until you take steps to remove Trojan:win64/Sirefef.E via appropriate anti-malware programs.

The Unpleasant Goodies That Trojan:win64/Sirefef.E Wants to Share with Your Computer

Trojan:win64/Sirefef.E can be considered a backdoor Trojan as well as a dropper Trojan, since Trojan:win64/Sirefef.E takes actions to reduce your computer’s security, in addition to installing other types of hostile software. Standard attacks by Trojan:win64/Sirefef.E that SpywareRemove.com malware researchers warn to watch out for include:

Changed network or firewall settings that allow Trojan:win64/Sirefef.E and other types of unauthorized programs to transfer files from and to external servers without your consent.
Blocked security and anti-malware programs, including anti-virus scanners or Windows maintenance tools like Task Manager and the Registry Editor. These programs may even display a fake error message if you attempt to access them while Trojan:win64/Sirefef.E is active, or they may crash while they’re in use.
The installation of rootkits. Rootkits launch themselves without permission and may not even show an independent memory process, preferring to infect normal system processes so that they can conduct their attacks in a clandestine manner.

Rootkits that are installed by Trojan:win64/Sirefef.E can be capable of stealing private information or causing extreme damage to your PC.
The installation of rogue software. This can include fake defraggers, AV scanners, anti-spyware tools and file-cleaners. Scamware like these have a tendency to create fake system warnings and request you to spend money at a fraudulent website.

How to Put Trojan:win64/Sirefef.E to Sleep and Get Your PC Back in Top Shape

Deleting Trojan:win64/Sirefef.E improperly may fail to remove all of Trojan:win64/Sirefef.E’s components, miss its payload or even leave your PC full of security holes that can be exploited in future attacks. SpywareRemove.com malware analysts encourage you to use only the best anti-malware programs that are available to remove Trojan:win64/Sirefef.E, since the possible presence of rootkits may complicate manual removal to the point of making it totally unfeasible.

Failure to remove Trojan:win64/Sirefef.E in the right way and as quickly as possible can result in a wide range of possible damage, as noted earlier with Trojan:win64/Sirefef.E’s possible payload types. Since Trojan:win64/Sirefef.E may be configured to cause many types of harm to your PC, you should be certain to scan your entire computer before assuming that all aspects of a Trojan:win64/Sirefef.E infection have been expelled.

Trojan:win64/Sirefef.E Automatic Detection Tool (Recommended)

Is your PC infected with Trojan:win64/Sirefef.E? To safely & quickly detect Trojan:win64/Sirefef.E, we highly recommend you run the malware scanner listed below.

Download SpyHunter's* Malware Scanner to detect Trojan:win64/Sirefef.E What happens if Trojan:win64/Sirefef.E does not let you open SpyHunter or blocks the Internet?

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:

#	File Name	Detection Count
1	file.dll	293
2	file.dll	286
3	%AllUsersProfile%\Application Data\.dll	N/A
4	%AllUsersProfile%\Application Data\.exe(looks like Trojan:win64/sirefef.E)	N/A

Registry Modifications

Tutorial: To edit and delete registry entries manually, read the tutorial on how to remove malicious registry entries.

Tip & Warning: Editing and removing the wrong registry keys can severely damage your PC, so remember to backup your Windows Registry! To optimize your Windows Registry and speed up your PC, download RegHunter's registry cleaner.

The following newly produced Registry Values are:
HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ".exe"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Trojan:win64/sirefef.E"HKEY_CURRENT_USER\Software\Wow6432NodeHKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run "Trojan:win64/sirefef.E"

Posted: November 7, 2011 | By SpywareRemove