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Theef

Aliases of Theef (AKA):

[Kaspersky] Backdoor.Theef.12, Backdoor.Theef.123, Backdoor.Theef.11, Backdoor.Theef.130, Backdoor.Theef.121, Backdoor.Theef.122, Backdoor.Theef.132, Backdoor.Theef.133, Backdoor.Theef.135, Backdoor.Theef.135.b, Backdoor.Theef.137, Backdoor.Theefle.10, Backdoor.Theefle.111
[Eset] Win32/Theef.12.Client trojan, Win32/Theef.12.Server trojan, Win32/Theef.123 trojan, Win32/Theef.11.Client trojan, Win32/Theef.11.Server trojan, Win32/Theef.130 trojan, Win32/Theef.121.Client trojan, Win32/Theef.121.Server trojan, Win32/Theef.122 trojan, Win32/Theef.122.Client trojan, Win32/Theef.122.Server trojan, Win32/Theef.133 trojan, Win32/Theef.135.B trojan, Win32/Delf.DY trojan, Win32/Theef.201 trojan
[McAfee] BackDoor-QW, BackDoor-AFG
[F-Prot] security risk or a "backdoor" program, security risk named W32/Theef.A
[Panda] Bck/Theef.12, Bck/Theef.123, Bck/Theef.11, Bck/Theef.130, Bck/Theef.21, Bck/Theef.22, Bck/Theef.13, Bck/Delf.AX, Bck/Theefle.137, Backdoor Program, Bck/Theefle.10, Bck/TheefLE.1.11, Bck/Delf.AM
[Computer Associates] Win32.Theef.B, Win32/Theef.12!Backdoor, Backdoor/Theef_Server_family, Win32.Theef.E, Win32.Theef.A, Win32/Theef.11!Backdoor!Server, Win32.Theef.F, Win32/Theef.1_30!Backdoor, Win32.Theef.C, Win32/Theef.121!Backdoor, Win32.Theef.D, Win32/Theef.122!Backdoor, Win32/Theef.122.B!Backdoor, Win32.Theef.H, Win32.Theef.M, Backdoor/Theefle.10!DLL, Win32.TheefLite.10, Win32.TheefLite.10.plugin, Win32/TheefLite.10!Trojan, Backdoor/Theefle.111, Backdoor/TheefLite.111, Win32.TheefLite.111, Win32.TheefLite.111.plugin, Win32.Theef.N, Win32/Theef.200!Backdoor!EditSer, Win32/Theef.200!Backdoor!Server

How to Remove Theef from Your Computer

To completely purge Theef from your computer, you need to delete the files and folders associated with Theef. These files and folders are respectively listed in the Files and Folders sections on this page.

For instructions on deleting the Theef files and folders, see the following section How to Delete Theef Files (.exe, .dll, etc.).

How to Delete Theef Files (.exe, .dll, etc.)

The files and folders associated with Theef are listed in the Files and Folders sections on this page.

To delete the Theef files and folders:

Using your file explorer, browse to each file and folder listed in the Folders and Files sections.
Note: The paths use certain conventions such as [%PROGRAM_FILES%]. These conventions are explained here.
Select the file or folder and press SHIFT+Delete on the keyboard.
Click Yes in the confirm deletion dialog box.

IMPORTANT: If a file is locked (in use by some application), its deletion will fail (the Windows will display a corresponding message).You can delete such locked files with the RemoveOnReboot utility. To delete a locked file, right-click on the file, select Send To->Remove on Next Reboot on the menu, and restart your computer. You can install the RemoveOnReboot utility from here.

Files:

[%PROFILE_TEMP%]\Temporary Directory 1 for theef.zip\theef\cgiparam.ini
[%PROFILE_TEMP%]\Temporary Directory 1 for theef.zip\theef\Server210.exe

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Scan your File System for Theef

Theef Categorized as:

Trojan

A trojan is a program that is disguised as legitimate software but is designed to carry out some harmful actions on the infected computer.

Unlike viruses and worms, trojans don’t replicate but they can be just as destructive.

These days trojans are very common. Trojans are divided into a number different categories based on their function or type of damage.

Backdoor

Of all trojans, backdoor trojans pose the greatest danger to users’ PCs because they give their authors remote control over infected computers. They are downloaded, installed, and run silently, without the user’s consent or knowledge. Upon installation, backdoor trojans can be instructed to send, receive, execute and delete files, gather and transfer confidential data from the computer, log all activity on the computer, and perform other harmful activities.

RAT

Remote Access Tool. A program that enables a hacker to remotely access and control other people’s computers. A RAT can serve a variety of malicious purposes, including hijacking and transferring private information, downloading files, running programs, and tampering with system settings.

How Did My PC Get Infected with Theef?

The following are the most likely reasons why your computer got infected with Theef:

Your operating system and Web browser's security settings are too lax.
You are not following safe Internet surfing and PC practices.

Downloading and Installing Freeware or Shareware

Small-charge or free software applications may come bundled with spyware, adware, or programs like Theef. Sometimes adware is attached to free software to enable the developers to cover the overhead involved in created the software. Spyware frequently piggybacks on free software into your computer to damage it and steal valuable private information.

Using Peer-to-Peer Software

The use of peer-to-peer (P2P) programs or other applications using a shared network exposes your system to the risk of unwittingly downloading infected files, including malicious programs like Theef.

Visiting Questionable Web Sites

When you visit sites with dubious or objectionable content, trojans-including Theef-, spyware, and adware, may well be automatically downloaded and installed onto your computer.

Detecting Theef

The following symptoms signal that your computer is very likely to be infected with Theef.

PC is working very slowly
Theef can seriously slow down your computer. If your PC takes a lot longer than normal to restart or your Internet connection is extremely slow, your computer may well be infected with Theef.

New desktop shortcuts have appeared or the home page has changed
Theef can tamper with your Internet settings or redirect your default home page to unwanted web sites. Theef may even add new shortcuts to your PC desktop.

Annoying popups keep appearing on your PC
Theef may swamp your computer with pestering popup ads, even when you're not connected to the Internet, while secretly tracking your browsing habits and gathering your personal information.

E-mails that you didn't write are being sent from your mailbox
Theef may gain complete control of your mailbox to generate and send e-mail with virus attachments, e-mail hoaxes, spam, and other types of unsolicited e-mail to other people.

Check now if your PC is infected with Theef

Also Be Aware of the Following Threats:

Backdoor

RAT

Trojan

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