IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [trojan]

In computing, Trojan horse, or Trojan, is any malicious computer program which is used to hack into a computer by misleading users of its true intent.

141 questions
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Does malware persist after wiping hard drive and reinstalling OS from manufacturer disc?

This question is related to a computer where users other than the owner have had access for periods of several hours at a time. The following steps have been taken to clean the computer: Used partition assistant to erase both the main partition and…
MM1926
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Why is my debugger detected as a Trojan by anti-virus software?

I'm trying to use a deugger (namely OllyDbg) to analyze some exe files. However, all the versions I downloaded from the Internet are considered as Trojans by some anti-virus software. (I use www.virustotal.com to scan the binary I downloaded) Are…
lyenliang
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AVG detects Kaspersky update files as infected (trojan, infected, malware)

(Note: update at end of Q) On a Mac, I am using AVG as the primary AV. In addition to this, I have a few scanners (Bitdefender and Malwarebytes) that I update and use periodically. Recently I decided to add Kaspersky's free scanner (from the App…
dakini
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Is there malware on my mac?

So, a funny thing just happened. I have my (personal) mac connected to the wired enterprise network and have for several months. Today, a couple of guys from IT came busting through the door saying that they were seeing a malware threat from a…
Ryan
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What infection vectors is Trojan.Linux.BillGates usually delivered with?

I just discovered that my server is infected with Trojan.Linux.BillGates.G and is being used to launch DOS attacks. It surprises me as the server is kept up-to-date (CentOS/Tomcat/CouchDB) as much as possible. My SSH server is only accessible via…
Nicolas Raoul
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Can any dangerous file(Virus, Trojan, Malware, etc) cause harm inside a zip or rar?

I am using Windows 8.1 pro with Mozilla Thunderbird for my email requirements. I have my Thunderbird set to auto download all email attachments, however upon runnning a Virus scan I am seeing many .exe, .zip and .rar files flag up as Viruses - Which…
DavidWrighten
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Windows Defender catches Trojan right after clean install

I recently upgraded some desktop PC components (GPU, SSD). I decided to perform a clean install of Windows 10 onto the SSD. I used a USB created using the Installation Media tool provided by Microsoft, which I created on my personal laptop. During…
Ishki
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Why Antivirus Detects Simple Java Program as Trojan?

Just now I was testing a very simple code in Java when I noticed a strange thing. On compiling the program my antivirus detected it as trojan and deleted the jar file. Further it is not allowing me to compile the program. The above characteristic is…
A. Sinha
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Can a virus persist across Windows version upgrades?

It is possible for a trojan which allows a remote user to secretly control a computer, to re-install itself after upgrading to a newer version of Windows?
Steve
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How safe is md5sum in regards to verifying executable files?

is it possible to trick someone into running a malicious executable file instead of a real one provided by a website; assuming they will md5sum the file
Tino Uchiha
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Kali.download website blocked by Kaspersky because of Trojan, is it safe?

So when I tried to dist upgrade my Kali, at the end my Antivirus blocked it from downloading from this website Do all Kali Linux operating systems try to download from this webpage (http://kali.download) or something malicious is going on? Is it…
Richard Jones
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Anatomy of a very creative .txt virus/trojan. How does it work?

So I downloaded a PDF which is password protected. Inside the same folder there are the following apparently harmless files: As you can see, they are both .txt files, right? Pretty harmless.. Actually, not: if you look closely you can see that the…
sigmaxf
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Finding a trojan on an android device

An acquaintance of mine recently came to me with strong suspicions that their non-rooted 6.0 Android device had been infected by a third party who has regular physical access to it. While I have a background in information security, conducting…
executifs
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Antivirus constantly detecting tmp files as threats

Recently my antivirus has been constantly detecting threats and it's always tmp files. I delete maybe 50 of these files each day. A few days ago it detected a trojan. Last week it detected many '.json' files from AppData/Local/Google/Chrome/User…
Calisto
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Weird DNS queries to messager.xicp.net

A DNS query for this domain (messager.xicp.net) was classified and detected as "Trojan.Generic.DNS" by the FireEye NX in our network. So, I used both VirusTotal and abuseibdb sites to check this domain. It seems it's mapped to 127.0.0.1…
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