Malware (short for Malicious Software) is a type of software designed to access a computer system without the owner's informed consent.

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Most downloads don't finish and can't open some anti-virus, pc cleaning software etc

Most of my downloads don't finish, especially if it's an exe file. It doesn't just stop halfway, it stops at the very end like something is blocking it from being written to disc. If the file is 5.1mb ...
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35 views

How do I access the internet with an infected computer that WILL NOT let me? [duplicate]

Im trying to fix my friends Toshiba laptop. She has Windows 7, no anti-virus and is infected with a virus. The computer shows no connection problems; but I cannot access the internet or download a ...
3
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1answer
31 views

Safely getting a file from a Mac computer with malware

A family member has a MacBook Pro with a file I need on it, but it’s pretty clear the Mac has some sort of malware on it. Regular Internet browsing—mostly via Google Chrome—opens up ad tabs on ...
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1answer
29 views

Malicious ads show on every site [duplicate]

Yesterday my brother's computer was showing ads on almost every site, the same ads in the bottom right corner with a black close button. Today, my computer started showing them. I use the same network ...
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21 views

CasperJS and “extensafree” virus

Today when i booted up my computer and when windows had loaded, Notepad++ opened which had the following file loaded into it: Set shell = WScript.CreateObject("WScript.Shell") ...
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1answer
49 views

Can't Get Rid of Mac/Linux Malware or Hardware Bug

My MacBook now has a permanent back door for some hacker that I can't seem to get rid of. I even tried booting from a Linux USB stick, wiping everything including the EFI partition, but every time I ...
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2answers
892 views

Is there any way to prevent a USB flash drive from being written to? [duplicate]

I see lots of articles about preventing a specific computer from writing to a USB flash drive or preventing malware from getting from a USB flash drive to a computer; what I can’t find anything for is ...
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26 views

Shadow copy recovered files contain lots of NULL blocks

A computer I am working on had most of the files on it encrypted by the TeslaCrypt ransomware program. I found that it did not delete the shadow copies and there may be a number of backups available. ...
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2answers
4k views

Found new malware not detected by antivirus. How to evaluate the threat?

On a Windows 7 workstation running an up to date antivirus suite (Kaspersky) I found several suspicious processes. To look at the process activity I used the excellent ProcessMonitor from ...
0
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1answer
76 views

Adult websites open on visiting any website in my chrome [duplicate]

Since, past few days, an adult website opens on visiting any website in Google Chrome. I have re-installed my chrome, and ever reset my chrome settings. Is their any option to prevent this virus? I ...
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1answer
24 views

unable to reboot after rescue mode by bitdefender

I am using windows 8 and bit defender total security. I recently went into rescue mode using bitdefender then I selected to reboot my computer. There is a black screen with text "reboot: Machine ...
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1answer
61 views

How do Malware like Coupon drop down land up in the Windows System without a trace in the Control Panel

I have the Windows Bit Defender updated and run Complete System scans biweekly. All the drivers and the operating System are up to date. In spite of this the Coupon drop down malware landed on my ...
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1answer
33 views

Were my DNS servers changed?

I recently stupidly clicked on a suspicious link and since then, Chrome stalls for a few seconds before reaching a web page. I suspect my DNS servers may have been changed (among other possible ...
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36 views

How to remove crypto-ransomware on my network domain [migrated]

Today some computer on my domain got infected with crypto-ransomware and have infected some folders on file server that only some computers on network have access to. So I presume one or more of five ...
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1answer
47 views

How do I stop chrome from redirecting me due to malicious software [duplicate]

When I click some links in chrome (trusted websites), I get redirected to 'spam' websites that say "your computer has viruses" or something stupid like that. How do I stop it from doing this? I have ...
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1answer
40 views

What is the executable /usr/bin/host on linux good for? Can I kill it?

So I had a compromised /usr/bin/host process running and trying to open HTTP requests out of my machine. I killed it. But now I am wondering. Do I need /usr/bin/host for anything? How do I re-install ...
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2answers
92 views

What is mac process “Wi-Fi”

I am running Mac OS X Yosemite. Today I ran across a process named "Wi-Fi" in Activity Monitor. The name catches my attention so I google around, but found little info about what the process ...
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1answer
33 views

Why does this program give a Windows 8 SmartScreen warning?

Why does this program http://creativeadept.com/download-spintax-editor/ give me a SmartScreen warning in Windows 8 when a Malwarebytes scan and Windows Defender scan found nothing? What is wrong ...
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1answer
52 views

Does marking files as readonly make them secure?

In Windows (or any OS, really), does marking a file as "Readonly" make it less susceptible to malware and unwanted manipulation? Additionally, should I still scan readonly files for viruses and other ...
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46 views

Is this malware?

I have a machine running Linux Mint (qiana). I noticed it was often slow and when I looked at top I found PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND ...
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1answer
45 views

Automatic password reset prompt on Windows 7?

My wife just told me that earlier today she received a prompt on her laptop to change her password, and complied with the request. Her laptop is running a vanilla install of Windows 7, 64-bit. All ...
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2answers
313 views

How to remove Buzzdock ads from Google search results?

Everytime I search for something on Google, I get this block of Buzzdock ads, as you can see on the screenshot. I am trying to get rid of this. I've already unistalled a program called "Buzzdock 2" ...
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32 views

Computer malware injects scripts causing full of javascript errors

I have a local browser application (written in php, running on usbwebserver) which runs fine on all of my users' computers except for one. When i checked the app, it seems that there have been ...
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167 views

csrss.exe anomalies, is this a rootkit?

I'm seeing a strange anomaly in some systems I support. GMER flags the cdd.dll thread in csrss.exe, and when I run Process Explorer with Elevated Admin rights, I am: unable to view any loaded DLLs ...
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1answer
145 views

How do I permanently get rid of “bigdeal” malware? [duplicate]

I'm very conservative in how I use my computer (no illegal software, no strange downloads) yet still managed to get infected by a very annoying piece of malware. I presents itself mostly in Internet ...
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39 views

Single machine on my network can't load a specific website

One windows 7 machine on my local home network is having trouble loading www.reddit.com I'm on a hardline into a linksys e1200 router. Other devices (laptop, phone, etc) have had no issues (wireless ...
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31 views

Recommended to Update Flash Player Virus [duplicate]

I keep getting this popup on my Internet Browser that tells me "It is recommended that you update Flash Player to view this site..." And it will redirect me to some very suspicious-looking website ...
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2answers
114 views

Reinstall Windows 7 after using DBAN?

I'm preparing to sell a computer. It came with Windows 7 (no install disks). I want to wipe all my data in the most secure way possible, (not just remove links, but overwrite the drive). My goal is ...
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1answer
35 views

random filenames on external hdd drive

i am in big troubble. My friend gaves me his external usb hdd drive and told me, his files are deleted and renamed. I just want to restore the data with the program "recuva" but it dosn't work. I ...
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2answers
386 views

How to remove BUYUNLOCKCODE Ransomware

A ransomware appears to have been circulating for the past few weeks. the data files will be encrypted and a BUYUNLOCKCODE.txt ransom note will be created in all directories where a file was ...
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1answer
35 views

How can I restrict access to a backup drive to only one program in Windows 7?

I got an old computer from some friends, so I decided to wipe it and set it up as a home NAS running Windows 7. My plan is to have two external drives: one as a network-accessible, read/write device ...
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40 views

how can i found the source of a malware that is trying to force-open a website

For the last 3 days i've been seeing this warning from Avast every 2-3 hours : I have no idea how to track this and make it stop, i scanned my computer and avast didn't find anything suspicious, the ...
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2answers
29 views

How do I delete files that are locked when no other app can delete them?

So I found out that I had a Trojan on my external hard drive. My anti-virus app killed it, but it has created a bunch of random files on my computer which cannot be deleted. These are image files. ...
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71 views

Possible malware modification of Windows registry entry

I found a strange entry in Windows registry on two of my PCs, and posted it as a question on Stack Overflow, here: ...
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106 views

Suspicious NetBios Name Service traffic

A friend of mine recently complained about the very bad performance of the Internet connection over her family's LAN. Apparently the Internet connection worked normal most of the time but certain ...
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1answer
297 views

Malicious pop-up in Chrome: “WARNING! Please Install Update To Continue.”

Does anyone know how to get rid of this pop-up: The page at new1getallfilesnow.maynemyltf.netdna-cdn.com says: WARNING! Please Install Update To Continue. OK
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1answer
88 views

Botnet/Virus Removal? [duplicate]

I am not sure what type of virus I have on my computer, and I am not sure if this is the right site to ask this type of question on, but here it goes: About a month ago I downloaded something i ...
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1answer
43 views

who is the administrators? extra admin user thats hidden

Some of my files on win7 64bit I have found have a user called administrators not administrator. This is a second hand laptop so Id like to know how to correct this if its a back door or something ...
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2answers
47 views

How to find which program is reading a file?

I tried delete some file but windows 8.1 reported that access is denied, which other program might read that file, but I don't run any. So it is maybe a harmful program. How can I find out which ...
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3answers
2k views

Removing invisible extension “happysale” in google chrome

The extension "happysale" is showing ads by "gifton" in Google Chrome and Mozilla Firefox, and I seem to be unable to remove it. When I go to extensions in Chrome I can't see it, but when i go to ...
4
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1answer
254 views

Cleaning a compromised Router?

At the office I noticed malware symptoms on one of the computers. I tried cleaning it and found nothing. Then I noticed I got the same behavior on my phone and the other computer: occasional links ...
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78 views

Manipulating firmware of USB flash drives

As far as you may know, about four month ago, a new malware-like program found that was infected USB device's firmwares. (Take a look here) I want to know, how it is possible to read and modify ...
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2answers
1k views

Stubborn Startup Page - MyStartSearch - mystartsearch.com

Just earlier I opened IE to go check my emails, etc... but my startup page is not google anymore as it previously was. The startup page was instead some "mystartsearches" thing which I had not ...
4
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1answer
107 views

Can an infected Android or iOS phone infect a PC running Windows?

I realize that any .apk may not run on Windows via anything other than an emulator, but my instructor insists that it can. Here are my objections: Can I infect the computers at school with my ...
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1answer
22 views

What are these files that defy file permissions to be inaccessible?

Every once in a while in our environment the AV comes across a malicious file, usually in a users temporary internet files, that no matter what I try, I can't edit, move, copy, or in any way access ...
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0answers
28 views

Windows 7 common search engines hosts don't work or responde to icmp

I have a windows 7 computer every site works... EXCEPT google.com, yahoo.com duckduckgo.com The websites IP also does not answer, the webpage keeps trying to load but the HTTP/ICMP request leaves the ...
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2answers
3k views

What is Best-Deals-Products and is it malware?

I have found something that I suspects to be malware/addware. Script is added in every website I visit, even once I made myself. This is added in the : http://puu.sh/dgIF0/0c452eb390.png and iFrames ...
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1answer
214 views

laptop shuts off out of sudden when the fan suddenly stops spinning

My laptop recently got an issue. it will shuts down during loading when I turn it off repeatedly. it got worse during time, previously, if it happens, next try the laptop would work fine, but now, I ...
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1answer
33 views

How to remove pice0chop extensions from Google Chrome?

How do you remove Priceochop 3.9 and proiCechOpe 3.9 from Chrome? Both show up in chrome://extensions and once plagued my browsing experience with advertisements. Now they effectively do nothing as ...
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1answer
2k views

How to remove osx kernel extension

I am trying to remove a kernel extension but every time i restart it keeps coming back how to permanently remove it? i believe this com.ab.kl.engine is some sort of spyware output of: kextstat | ...