Questions tagged [malware]

Questions relating to malicious software

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52 views

Chrome Consuming a lot of CPU Resources (Possible bg Crypto Miner)

community, It's been a month and I feel there is some fishy things going on in my chrome ubuntu 20.04. I think there is a possibility of a miner script running in the background. With hardly 10 open ...
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1answer
28 views

Is downloading a pdf from google drive resource intensive? (firefox)

I tried downloading three pdfs via google drive through firefox. All of a sudden, my laptop - lenovo ideapad 330s heated up while the pdfs havent finished downloading at all. I downloaded htop to see ...
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1answer
42 views

I possibly installed malware, help please

I was looking for a Twitter app on Ubuntu Software Centre and I downloaded a fake Twitter app from snapcraft. Didn't notice and didn't read the comments before I hit install, like an idiot. The name ...
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ClamAV MD5 sum based whitelists (*.fp) don’t work in Ubuntu MATE 20.04.2

Trying to make ClamAV ignore several files. These are almost cryptocoin miners which I do use. Cryptocoin miners get flagged by most antivirus programs for they can be distributed as malware (using ...
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53 views

What are people using currently for virus and malware checks? [duplicate]

What are people using currently for virus and malware checks? I realize there is far less need for this with Linux than with Windows, but I still prefer wearing a seat belt just moving my car out of ...
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Possible Spectre V2 on my computer

So when i was fiddeling with my computer i ran the command dmesg | grep Spectre and i get the result [ 0.141500] Spectre V2 : Mitigation: Full generic retpoline [ 0.141501] Spectre V2 : Spectre ...
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1answer
91 views

Disk Full, Can't login

I'm running Kubuntu 20.10. I had at least some 5 GB free earlier today. Then apps started acting up. I checked in dolphin, and found I had 0 GB free. I cleared space, at least 2 GB, but it filled up ...
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40 views

Unknown display font detected on ubuntu

I just suddenly started seeing what is in the screenshot below and I don't know how it came to be. I don't even know if it is a virus or so. Surfed the internet for solutions but found none. How can ...
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113 views

Ubuntu / Linux / Windows Virus wrote to my “read only” 20.04.1 Live USB (Twice!) and infected two separate live USB's! How is this possible?

Ok. Hang on to your hats! This is going to sound crazy but I have been attacked by some crazy hacker malware. I believe it started out as a file-less attack on my Widoze 10 Home partition and spread ...
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1answer
63 views

Is rkhunter still required and appropriate? Nothing seems to have been written on it since 2015. Thanks

I want to use my Ubuntu 20.10 Groovy Gorilla desktop for internet banking and making purchases. Good digital hygiene is of course the first defence but i'd like to make sure that rootkits are ...
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1answer
386 views

kinsing miner fix - help needed

Ineed some help removing this kinsing virus (bitcoin miner). Currently I have this script running every 5 minnutes via a cronjob sudo kill $(pidof kdevtmpfsi) || True sudo kill $(pidof kinsing) || ...
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1answer
68 views

What does the Clamtk network setting do?

As mentioned in the question, what does the network setting for clamtk do? It seems that it is not clearly documented in the clamav/clamtk documentations. I have basic knowledge of what is a IP ...
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28 views

List of trusted binaries for chkrootkit?

Chkrootkit has the ability to use trusted binaries for system scanning. How do I best go about creating such a list, or at least ensuring that when I run chkrootkit, it's not using compromised files? ...
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1answer
61 views

Strange file appeared by itself and wouldn't let me delete. Then later disappeared

Hopefully what happened is normal and it's just my general ignorance regarding these things. I know linux doesn't often get viruses but other strange things have been happening on my system recently, ...
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100 views

Best log parser for Ubuntu that can parse all the possible information found in a ubuntu system for forensics?

I'm looking for a forensic tool that can help me with parsing all the available information on a system, so any activity that a certain user has done which can be collected needs to be fetched and ...
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133 views

Malware in www-data crontab

Every so often I see this in my crontab of the www-data user I know it's malware but i would like to know how this was changed, to prevent this from happening again. I have already run several tools ...
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1answer
372 views

Weird blow fish icon on my taskbar tray

I have this weird icon on my taskbar tray. I worry that it is some malware or something. I cannot execute it or run it. I tried clicking it but it doesn't do anything.
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419 views

Ubuntu server 18.04 has been infected by a kdevtmpfsi

My Ubuntu server version 18.04 has been infected by a kdevtmpfsi But it is still coming again and again . I stop docker service and kill kdevtmpfsi process but starting again image one show detail ...
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1answer
64 views

Launch Nautilus from command line: warnings and errors

I am trying to understand why this suddenly gives me error messages. I have always launched nautilus from the command line and it has always worked. Suddenly I started getting an error message. I ...
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28 views

Nautilus launches from command, but gives error not seen yesterday

In terminal I launched nautilus and got this error: Nautilus-Share-Message: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory) Why ...
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977 views

bash: cannot set terminal process group (-1): Inappropriate ioctl for device

Just received this error >> bash: cannot set terminal process group (-1): Inappropriate ioctl for device then the disk partition went into READ-Only mode ; also noticed gnome-software was ...
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76 views

Do any Linux malware detectors find cryptocurrency malware?

Lately I've seen more talk about the dangers of crypto mining malware, especially a new one called Lemon_Duck. I would like to protect my systems from these intrusions, but cannot find any application ...
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1answer
62 views

Why it is hard for virus to crack Linux file system although it is so open? [closed]

I've just started my journey in Linux by installing Ubuntu 20.04 LTS, trying to learn about it's file system and working method and faced a question that why a normal user doesn't face any virus issue ...
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33 views

Keep getting the following message

I am running Ubuntu 20.04. Since reinstalling the operating system (I could not connect to the internet as my ISP kept blocking it). I get the following message Message reads: potential malware alert....
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1answer
36 views

Null/blank processes on Ubuntu

I am using Ubuntu 20.04 LTS with Mate. Recently I am observing blank processes in System Monitor as shown in the image. Usually, there is only one but sometimes there are a lot as in the image below. ...
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76 views

Possible malware? - Installed wrong package - Ubuntu 18.04 [duplicate]

Accidentally installed wrong package sudo apt install netplan instead of sudo apt install netplan.io from official Ubuntu repository. I run Ubuntu 18.04, I wanted to edit DNS servers, but instead I've ...
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Crypto-mining maleware that disable input and output devices

I recently find my computer monitor sometimes shuts down itself and cannot be wake up by tying on my keyboard or my mouse. I turned off and on the monitor, but it shows 'no input signal'. I changed ...
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77 views

Does “forked into the background, PID xxxx” means that i executed a malware?

I am a complete newbie in Linux and I was given 2 executable malware files. I used the sudo ./filename command and a message popped up saying "Forked into background, PID XXXX". Does that ...
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48 views

Found a folder named '~' in my home dir. Should I be worried?

I just found a folder named: ~ in my home directory. It had a little red cross on its bottom right corner,like root folder have. It was empty. When I deleted it, I was prompted to enter my login ...
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135 views

Kill this clamd process running from another user which I never know about

From HTOP Hi, there is a clamd process running from a user called "tcpdump" I google and found that it's not quite a real user, so I remove that user. However, this process still running and ...
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1answer
59 views

Need to check the files that are being uploaded from my system in the background

I've noticed in the System app that sometimes high upload speed, even when there's no application running. I suspect this could be the work of some malware, and so I'd like to check which IP is being ...
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1answer
100 views

New unknown users appearing on ubuntu, virus?

there are these two users periodically appearing in my ubuntu system ('jicofo','jvb') I have deleted them twice (in 19.10) but they reappeared again, so I thought I'd look into it and turns out they ...
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1answer
124 views

ClamTk found Trojan.Generic-6888382 in Javascript directory

TROJAN IN Ubuntu 20.04 LTS - JAVA SCRIPT I run ClamTK and it finds Trojan.Generic-6888382 in usr/share/javascript/jquery-ui.min I delete it, but then it's there again. I quarantine it, but it's there ...
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1answer
45 views

Ubuntu asked me to update but is not connected to the internet and hasn't been used for weeks

I'm sorry if this sounds dumb. I'm new to linux and ubuntu. I like to play around with it sometimes. Just now i booted up ubuntu from an usb stick. I use a wired connection and ubuntu has airplane ...
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2answers
106 views

Is snap verified by Ubuntu SnapCraft Team?

Is snap verified by Ubuntu SnapCraft Team similar like Apple in Appstore? Verification about: It contains malware / spyware / virus / stealing information / unnecessary permission usage or not.
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2answers
443 views

Can a windows file or virus in any way affect bios or Ubuntu?

first of all, this is my first question on this site or anywhere for that mater, so excuse any mistakes or the lack of info I might provide, I'll try my best:). I have recently installed a program on ...
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106 views

AndroiBox of AndroPytool did not work

When I ran andropytool on Ubuntu 18.04, an error occurred that Androibox could not work ''' (droidbox_env) root@d8e5070d137a:/# cd AndroPyTool/ (droidbox_env) root@d8e5070d137a:/AndroPyTool# python ...
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1answer
73 views

Mystic activity when idle

When my computer is running idle with no programs running i can see unusual spikes in the processor and network activity in the system monitor. I has been like this for quite a while. It happens even ...
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58 views

Is there any way to check/verify if a ppa repository is safe, or has been flagged by someone for some reason somewhere on the internet? [duplicate]

You ve got a lot of ppa repos out there, and everyone seems to link add and download from these without checking (i assume). Is there a way to verify safety of a ppa somewhere on the internet ?
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107 views

is there a chance that malware will affect my windows partitions? [duplicate]

My question is : Same I dismount? affect my windows partitions? Sorry my english grammar
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46 views

Malware lab without virtual machines (Lubuntu as server/gateway)

I would like to set up a malware lab without virtual machines. On one laptop I have Windows 10, on the other Lubuntu, which will be used as a gateway/server. On the latter, I want an ethernet ...
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1answer
78 views

Spam in Notifications

I'm seeing the following message in my notifications: HA BAШE ИMЯ ПPИШEЛ ФИHAHCOBЬIЙ ПEPEBOД... Google translate gives this as HA YOUR NAME WAS FISHED... I can't clear the notification for some ...
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1answer
654 views

Clamav False Positive and Linux Viruses statistics

I use Ubuntu Studio 19.10. After to use Clamav (with Clamtk GUI) to scan my PC, I found a lot of LibreOffice files, macros mostly, which Clamav shows as "Possible dangerous threats". But, I guess it ...
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2answers
217 views

How to stay safe on Ubuntu [duplicate]

I am a complete noob to linux. And I have installed ubuntu on my laptop. My concern is Security. A lot of sources online say I don't need any anivirus software, can someone explain why this is? I ...
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1answer
45 views

Unidentified JS file on desktop

I noticed just then an unidentified file with a .js extension on my desktop. I double-clicked it before thinking about it and it opened as text with Pluma (my default text editor). Should I be ...
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2answers
155 views

Nervous about this application. Could it be Malware? Can i find out?

I don't know what is, I won't click it and you can't right-click the link. How can I figure out what it is, and if it is malware how can I identify it as such?
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1answer
10k views

Windows Defender reports Win64/Longage Trojan malware in Ubuntu 18.04.3 live server

Windows Defender 8 Dec 2019 reports Win64/Longage severe Trojan malware in Ubuntu 18.04.3 live server, file: ubuntu-18.04.3-live-server-amd64.iso-> pool\main\l\linux\linux-modules-4.15.0-55-...
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0answers
93 views

Ubuntu Hacked - Attempted to Kill Init

I recently got hacked via Omegle. I realised that the person was able to control my cursor and my keyboard as well. So, I shut off my machine as soon as I realised it. I turned it on later, to ...
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3answers
133 views

chrome popups / malware

I've got a school lab with Ubuntu 18. On some computers, when Chrome is open I'm getting popups saying things like "local weather" or "Sandra transferred $99,999.00 PayPal" and the like. chrome://...
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3answers
261 views

How can I track down what is giving my desktop spam notifications?

I'm getting desktop notifications when I log in. They look simply like news headlines. I thought they were some new part of Ubuntu. Clicking on these leads me to websites like investing-review.com ...

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