For questions on how to remove viruses and other malware from a computer—be sure to read http://superuser.com/questions/100360 before asking

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199
votes
1answer
24k views

I am a victim of the Petya ransomware. Is there a solution to decrypt my disk?

My computer got encrypted by the Petya ransomware. After a long search I could not find a solution other than using file recovery software. This helps a bit, but I am wondering if there is a way to ...
117
votes
5answers
18k views

Why does anti-virus software not delete the viruses, malware, etc., but instead quarantine them?

Why does anti-virus software not completely delete the viruses, malware, etc., but instead quarantine them? Is it not better to completely get rid of them? Why? And how can I manually remove them?
15
votes
4answers
11k views

How to be certain you don't have a virus when anti-virus scanners find nothing malicious? (Windows 7)

I recently spent many hours troubleshooting a laptop that could not connect to the internet. The laptop exhibited no other unnatural behavior, and so my first thoughts were to try connecting to other ...
9
votes
6answers
3k views

Safely opening a suspect USB Drive

If you have a USB Drive that may or may not be contaminated, what is the best way to retrieve data from it without reinfecting yourself?
8
votes
7answers
3k views

Cleaning windows viruses from linux

In a dual-boot system, does anyone have experience dealing with viruses that hit windows from linux? (disambiguation note: dealing with them from linux .. ) The C:\ in windows is mounted to /media/...
7
votes
1answer
37k views

Files names in pen drive turned into gibberish text

Recently my uncle gave me his memory card from his phone telling me something is wrong with it.When i tried to check the contents of memory card this is what i found(take a look at screenshot). I ...
6
votes
6answers
4k views

Clean up infected computer from viruses [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? I have a computer which had AVG Free installed from day one. After several months of operation, it starts ...
6
votes
3answers
8k views

Windows 10 'Reset this PC' effective for removing malware?

I've long fallen back on reformatting my hard drive whenever I've got a virus/malware/spyware, but now that I've upgraded to Windows 10 can I put those days behind me because of the 'Reset my PC' ...
6
votes
2answers
100 views

What can I do about a virus that's affecting my relatives even though they're in different places?

In the last week, I have had two family members contact me about possible viruses on their machines. The cases involve different machines in different geographic locations. The only similarities are ...
5
votes
3answers
8k views

How can I perform a virus scan of my Windows install from Linux?

Earlier today, I noticed that Windows Defender was acting up. It was disabled and, once re-enabled and tasked with a quick scan, it would error out with some Windows License Expired error code or ...
5
votes
4answers
2k views

How do “Powerusers” manually find and remove malware from Windows [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? I'd like to know what tools and methods are used by the pros to remove malware in Windows. Is HijackThis ...
5
votes
1answer
243 views

Can my Linux-mint become vulnerable after updating?

According to Linux Mint's blog post: The website of linux-mint is hacked and some ISOs are replaced with backdoored operating system. I am installing my operating system from a few weeks ago. ...
4
votes
1answer
14k views

007guard: What is it, is it dangerous, and can it be removed?

Since some time, I've been running Spybot S&D and AVG AntiVirus, both completely updated to the latest versions. During a regular check of my system, I found a huge amount of connection attempts ...
4
votes
3answers
4k views

How can I restore Notepad after having it infected by a virus?

My computer got attacked by a Notepad.exe virus on Windows 7. I've gotten rid of it, but now the standard Notepad program is missing. I can't run any of my .txt files. What should I do to repair ...
4
votes
1answer
231 views

What is the command for removing windows shortcut virus?

We have to insert our pendrive (flash drive) at cyber cafes or other public places. So, it is almost impossible for us to ensure that systems we plug into are malware-free. As a result, we experience ...
4
votes
2answers
4k views

All the files on my external drive have been replaced by a single shortcut which can no longer be opened

Here is what happened after I used Malwarebytes Anti-Malware: Before I used Malwarebytes Anti-Malware I could still open that shortcut. I know that a virus made that shortcut and so I tried to ...
4
votes
2answers
1k views

What Is Microsoft “Boot Time Removal Tool”?

I'm working on a Windows 7 computer. The owner reports that they believe the computer has been infected by malware and that they had an overseas company attempt to fix the problem but that something ...
3
votes
4answers
413 views

help … virus ? compromised ? (aarama.net)

Help me please identify whether my computer is compromised or not. I'm not yet sure what this is.. I'm still browsing through some JavaScript (my level = beginner) files I found during my 'research'.....
3
votes
3answers
2k views

vista antivirus virus starts even in safe mode

My sister got one of those fake antivirus trojans on her Vista laptop. It didn't change her background, but pops up "Vista Security Center" BS stuff all over the place and has killed her internet - ...
3
votes
3answers
6k views

Is spywarehelpcenter.com a reliable resource for malware removal?

I am looking for a good resource for removing a spyware program Security Shield. I know that many resources claiming to offer help are actually just proponents of additional spyware. The article I ...
3
votes
1answer
2k views

How can I regain administrative privileges after a virus infection?

Is there software that allows you to bypass administrator restrictions? The problem is a virus has restricted me from doing anything; I can't install anything because I don't have the administrator ...
2
votes
2answers
8k views

two csrss.exe files,how to remove one of them

From my search in the internet i found out that there should be one csrss.exe in that article it says i should have only one file named csrss.exe in the task manager ,if there is more then one,one ...
2
votes
1answer
1k views

Why does MSE take a long time to remove a virus?

Microsoft Security Essentials is fairly fast at scanning for viruses, but it takes a long time to remove a virus. It would be much worse if the virus duplicated itself in many files. I guess maybe ...
2
votes
3answers
297 views

Can't get rid of malware [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? I am using Avira on my old XP-PRO laptop and today without a scan a message popped up indicating malware had ...
2
votes
1answer
77 views

Malware is causing Google Chrome to forget user data [duplicate]

I have a laptop with Windows 8.1 and every time I restart the computer it's like Google Chrome reinstalls itself from scratch. My browsing history, download history, extensions, themes, etc... all ...
2
votes
3answers
7k views

IP Helper Virus?

Lately I've been having trouble browsing the internet on my computer, where it seems to take a really long time to connect to websites, or it just seems that the internet is just not responding at all....
2
votes
1answer
2k views

How to remove google ads virus from IE?

I have picked up adware in that shows extra irrelevant google ads. This only happens in Internet Explorer 10, not Firefox or Iron. I have tried some removals for similar viruses with no luck. I have ...
2
votes
4answers
300 views

Suggestions for cleaning up the mess after removing the “system tool” virus? [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? Hi! Last night I got infected with the "System Tool" virus. For those who don't know it disallows the user ...
1
vote
2answers
130 views

MSE Virus removal

I downloaded MSE and finally detected all the problems none of the antivirus programs would ... turns out I had 29 exploit viruses and 5 trojans thanks to a program I downloaded a while back ... most ...
1
vote
4answers
2k views

How to get rid of Win32/Cryptor virus (for free)

My sister's computer is infected with the Win32/Cryptor virus, and I'm helping her get rid of it. She's on Windows XP SP3. AVG 8.5 continually detects it, but can't get rid of it. Are there any free ...
1
vote
2answers
3k views

Osx.Trojan.Genieo, what to do?

I ran ClamXav on my Mac today. What do I do now, in particular with regards to the Osx.Trojan.Genieo? I deleted both .dmg files (InstallGenieo.dmg and InstallGenieo-2.dmg, both dated 13 Nov 2013 ...
1
vote
2answers
327 views

Getting rid of the Antivirus 2009 virus/adware?

I have known a few computers that have gotten this pesky virus/adware combination (my parents and girlfriend most notably). For my parents computer I resorted to reformatting it. I still don't know if ...
1
vote
1answer
6k views

How to remove shortcut virus from usb-flash-drive

My usb-falsh-drive have shortcuts of every folder and even if I deleted They are remaining same. Have any one experienced it? How to remove or prevent it? Thanks in advance, Vicky
1
vote
3answers
309 views

Remove virus- Vista Security 2011 [duplicate]

Possible Duplicate: Computer is infected by a virus or a malware, what do I do now? This seems to be a virus that has infected my computer. Are there any free, trustworthy programs that I can ...
1
vote
2answers
53 views

Should quarantined files be deleted?

Windows Defender detected a virus on my computer and quarantined it. Is it better to leave it as it is or to delete it? In general, what are the circumstances under which one must not delete ...
1
vote
1answer
60 views

What kind of virus is this? Avast does not recognize it. [duplicate]

From time to time, a popup like this popups up and installs some random app. I scanned my PC with Avast, but it did not recognize any threat. And how to remove it?
1
vote
1answer
4k views

Will upgrading to windows 10 from 8.1 remove the existing virus and malware..? [duplicate]

I am using Windows 8.1 and I believe that it's been infected. I wanted to format it but I haven't backed up the files . will upgrading to windows 10 remove the virus ? Or is there any other way I can ...
1
vote
2answers
176 views

Files disappeared from memory stick

I worked on some documents on my memory stick and then most of the files on it disappeared. The system shows these stats for the stick: capacity 59.6GB, used 51GB, free 8.58GB That seems ...
1
vote
2answers
3k views

Problem: Restrictions in effect on computer. Asking me to contact my system administrator

This started happening when I had to restart my computer for an exam so I can get it working faster. When I rebooted it, it stopped giving me the option to do alt-F4 to be able to shut down, hibernate,...
1
vote
1answer
1k views

Chromebook with linkbucks virus

I just bought a new Samsung Series 3 Chromebook with the Google Chrome OS operating system. one of the main advantages of this system is that they are supposed to be impervious to viruses. While ...
1
vote
1answer
325 views

How do you detect the Indestructible TDSS botnet?

I see a lot of articals like Indestructible TDSS botnet is spotted in the tech press at the moment, but I have seen nothing about how to detect it. Any one know of any simple tool or test?
1
vote
2answers
133 views

Cleaning up an infected computer? [duplicate]

I need to clean up my folks’ Windows Vista laptop, and I haven’t done it in years. Normally, I would install AVG antivirus, look through msconfig and remove non-essential start-up programs, and then ...
1
vote
1answer
856 views

How do I scan a USB 3G modem for malware without reinfecting the PC?

My mother's Windows XP system recently got infected with the SHeur trojan (SHeur4.ese). I was able to download and install Malwarebytes Anti-Malware in line with the advice here, but the modem was ...
1
vote
2answers
4k views

Removing a rootkit from the MBR.. without formatting?

I have run hitman pro and found 'traces of the TDL3 Alureon' rootkit on the computer. However, running TDSSKiller would of solved this issue - but - apparently the symptoms keep coming back so I ...
1
vote
1answer
1k views

HTML/Shellcode.Gen HTML Script Virus

My computer has been infected with the HTML/Shellcode.Gen HTML Script Virus. How could this be affecting Firefox, and how should I remove it completely? I currently have Avira AntiVir installed, and ...
1
vote
0answers
102 views

Noad steep tv ads running on PC

I have ads playing in the background of my PC. In the task manager there is a process named noad steep tv. If I try to end it, it just reappears after a few minutes. My antivirus doesn’t find anything....
1
vote
1answer
158 views

Handle a virus infection by Trojan-Spy.Win32.ZBot.a [duplicate]

Since a couple of days I have a prompt from my KIS 2016 saying that he found this Trojan in MEM. I try to clean and restart the PC, all goes well, but in a while this message appears again. I have ...
1
vote
1answer
802 views

I uninstall DNSUnlocker, but its adware still terrorizes my PC [duplicate]

These DNSUnlocker things are everywhere on every page on my PC. I don't even know how it even got on my system. After finding it in control panel and uninstalling it, it seems to still terrorize my pc,...
1
vote
2answers
356 views

Cryptolocker virus removal

I am facing cryptolocker virus problem, I have tried decryptcryptolocker website but it did not work. In the below link you will find an example encrypted file in my pc. https://docs.google.com/...
1
vote
0answers
817 views

Corrupt Excel files have smile-faces and unusually large workbooks

I have several files which are massive in size, but should not be. The files are 20+MB and should be only around 1 MB. When opening with 7-Zip as an archive the file which is unusually large is: '...