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44

Yes. There are a number of ways: Directly patch Task Manager's process at runtime so that its enumeration code skips over your process. Run "processless", by loading a DLL into a process (e.g. via AppInit_DLLs) or injecting code into process memory and starting a thread (via VirtualAllocEx / WriteProcessMemory / CreateRemoteThread). Hook the Process32First ...


28

UPDATED I would check the following: Logs. If you have root access you should check things like history which will give you command history and log files in /var/logs. Baseline. If you have a baseline like file hashes to work with for application and system files this will help a lot. You can also use backups to compare a previous state. If using a backup ...


26

If a website does not use a custom built server to modify the HTTP headers, you can try by examining the order of arrangement in the HTTP response fields. From OWASP: Apache 1.3.23 server: HTTP/1.1 200 OK Date: ... Server: ... Last-Modified: ... ETag: ... Accept-Ranges: bytes Content-Length: ... Connection: ... Content-Type: text/HTML Microsoft IIS ...


15

I believe the term you're looking for is "honeypot".


13

If you can send packets to the target machine, use nmap -O, which provides OS fingerprinting. If you can eavesdrop/intercept network traffic with the target machine, use pof, a tool for passive OS fingerprinting. You didn't provide much information about what are your constraints or why the standard tools (like nmap or pof) didn't work for you. Therefore, ...


13

Yes. Stuxnet was being used to attack the Iranian nuclear facilities in 2007, but wasn't detected by AV or the public until June 2010. Part of its construction was designed to resist analysis by encrypting the payload against a value that could only be derived by a valid target system - it didn't appear to do anything particularly malicious outside of that ...


12

The SIM card must be plugged into a device for it to be functional in any way. It does not contain a power supply or an antenna. As such, it'd be impossible to track a SIM card on its own. However, once you plug it into a phone and power it on, the IMEI number of the phone and the SIM's serial number will be transmitted to the nearest cell tower(s).


11

In some circles, "crypter" and "packer" are synonymous to mean binaries or programs which are self-checking and/or self-modifying. Crypters may, more specifically, mean self-modification that includes encryption and/or code scrambling (see more below). I suggest that you read Chris Eagle's The IDA Pro Book for an introductory understanding of packers and ...


10

Yes, consistently. Viruses must be used and found before a definition is created. APT (Advanced Persistent Threats) are a huge deal in recent times where people will spend years developing viruses, called 0 day threats, for specific targets that will remain undetected for very long periods of time. Viruses like these are usually a product of nation states as ...


9

You could give some of the encoders in the metasploit framework a look. In particular the Polymorphic XOR Additive Feedback Encoder ( Shikata Ga Nai ) might be worth a look, as it is dicussed in the Metasploit Unleashed documentation in regards to bypassing antivirus detection.


9

Those DDOS attacks were performed using a botnet. A botnet is a network of consumer PCs infected with malware. Such botnets are routinely used for a lot of activities, most of them illegal or at least ethically questionable. For that reason the people who control a botnet do their best not to get found. They usually control their botnets using obscure ...


8

Your idea of fingerprinting is very similar to wireless signals intelligence in WWII. Both sides used to have whole departments whose role was to learn the code style, or "fist" of the opposing side's wireless operators. By tracking these profiles and using radio direction finding they gained a surprising amount of information about troop and vessel ...


7

The best thing you can do is have a known clean copy of your site that you can compare the server's files against. Most hacked webservers that serve virus infections come from changing the content of scripting files that server is offering to clients. Look for files with different checksums or new files. There are also cases with forums type sites where the ...


7

You would be surprised how common it is to detect an attack, send an attack report to the company whose IP address the attack comes from, and get a response back reporting that the compromised machine has been quarantined thanks to your report. Part of being a good network citizen is helping other administrators to detect and respond to compromised systems ...


7

It sounds like you want a tamper-evident security seal. There are many commercial offerings. You can look at tamper-evident tape, cable seals, padlock seals, and many other options. I recommend that you read background information from Argonne National Laboratory, which has done some of the best research on the security of these seals. Let me warn you of ...


7

Why do you assume the user would notice? Starting a program takes a bit of CPU, a bit of RAM, causes a few disk accesses, but that's pretty low-key. Even geeks who have a CPU meter or other common system monitor in their task bar will probably assume it's just some Javascript on a timer in an opened web page, or a garbage collector, or a scheduled task in ...


7

There are many known ways to identify packers. The 'most common' packer UPX and its variations are usually flagged as 'suspicious' by Anti-virus engines due to a signature detection in the EXe. There's a couple of handy tools called: RDG Packer Detector which detects specific packers based on signature checking (presumably the same way AV does it PEiD ...


7

You can try looking if you can get the server to display a native error page. Error pages can be customized by a web developer, but when they aren't, they often reveal a lot of information about the web server. For example, this is the 404 Not Found error page of Apache 2.2.4 running on Unix: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> ...


7

Finding out that a user is using a VPN service provider isn't that difficult. Most of them have static IP addresses for their exit gateways, so it could just be using a list of known IP addresses to identify VPNs. And even when they don't have a list, a simple reverse DNS lookup might tell them that the IP has a hostname which is obviously a VPN provider and ...


6

As @Dgarcia said, a quick method is to use something like Tripwire or other tool which monitors files or the hashes of files to check for changes. This works to identify servers compromised by many types of attack. It may not work for ones where a rootkit has been installed that counteracts this process. It will not work for servers which have fallen prey ...


6

This is a tough question to answer because it is so broad. There are two categories of "hacks" in my book - minor and serious. I would class a rootkit in the serious category and your average script injection attack as minor. While with minor attacks you can clean them up, you can't be 100% certain you've removed them or closed all access to repeat the ...


6

you can check the following links NMap OS Detection and Paper About Nmap Detection you will find on them different methods used for OS detection By Fyodor the Creator of Nmap and if you want to dig dive you can purchase his book from amazon. From NMap OS Detection: ...dozens of tests such as TCP ISN sampling, TCP options support and ordering, IP ID ...


6

Efficient malware will manipulate the kernel internal structure so as not to appear at all in the list of process (then again, a hide-and-seek game between malware and malware detectors; see for instance this page for some information). Thus, you will not see anything in the task manager. Even if the keylogger does appear as a task in the task manager, key ...


6

I can think of some ways: Malware connect to C&C server. if you monitor your traffic (as sensitive system should be monitored) - than you find unusual traffic that can be sign (and should be investigated) If the malware uses USB flash drives to spread itself, and you have different computer platforms in your environment (e,g: windows, mac, linux and ...


6

Knowing of an attacker and not disconnecting them will allow you gather evidence on the attacker such as determining the motive for the attack, determining the tools the attacker is using, determining the mode of operation of the attacker and maybe... just maybe, but not likely, being able to trace the connection back to the attacker. You could then try to ...


5

Disclaimer. IBM Site Protector is proprietary, so I cannot answer specific questions about it. But I'll share my impression of network-based IDS/IPS systems, in general. Effectiveness at detecting certain attacks. You asked about how effective IDSs are at detecting certain specific kinds of attacks: Port scans. I'd expect IDS systems to be pretty ...


5

IDSs will probably be about as effective at detecting targeted attacks as non-targeted attacks. I wonder if there might be some misunderstanding about what a "targeted attack" is. The difference between a targeted attack and a non-targeted attack is in whether the attacker tries hacking everyone or hacking just you. Targeted vs non-targeted is orthogonal ...


5

Go throughout this article about remote OS foot printing. http://nmap.org/book/osdetect.html



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