Hidden Backdoors, Trojan Horses and Rootkit Tools in a Windows Environment. Not every case of a successful intrusion is crowned with a replaced Web site on the server, data theft or damage. Often electronic intruders do not wish to create a spectacle but prefer to avoid fame by hiding their presence on compromised systems, sometimes leaving certain unexpected things. They use sophisticated techniques to install specific malware backdoors to let them in again later with full control and in secret. What is malevolent software intended for Obviously, hackers have a variety of motives for installing malevolent software malware. These types of software tend to yield instant access to the system to continuously steal various types of information from it for example, strategic companys designs or numbers of credit cards. How To Download Netbus Trojan' title='How To Download Netbus Trojan' />In some cases, they use compromised machines as launch points for massive Denial of Service attacks. Perhaps the most common reason hackers tend to settle on another system is the possibility of creating launch pads that attack other computers while disguised as innocent computer addresses. This is a certain kind of spoofing where the intrusion logs fool the target system into believing that it is communicating with another, legitimate computer rather than that of an intruder. Under normal conditions, it is hardly to compromise LAN security from the Internet, because in most cases LANs are tied to the Internet via reserved addresses such as type 1. RFC 1. 91. 8 document available at http www. Thus, a hacker cannot have direct access from the Internet, which presents a certain problem for him. Types+of+Cyber+Attacks+%28cont.%29.jpg' alt='How To Download Netbus Trojan' title='How To Download Netbus Trojan' />Installing shell programs e. Telnet on any Internet accessible computer will allow the intruder to gain access to the LAN and spread his control over the infrastructure. Such types of attacks are prevalent on Unix computers, because they use more common remote access shell services SSH, or more rarely, Telnet and no additional installation is required. This article will, however, focus on Microsoft Windows based systems. Who will become a victim An intelligent hacker will not try to put his program on a server that is monitored and checked regularly. He will secretly, without the knowledge of any legitimate user. Therefore, his attempts to get in will certainly not be through the main domain controller which has its log frequently examined, network traffic monitored and will detect any alterations immediately. Of course, everything depends on the observance of the security policy and as is well known, network administrators are not always scrupulous in performing their work. Nevertheless, a host that plays no key role in the network makes a perfect target for a hacker. Before commencing the selection process, a successful hacker tends to transfer the zone and thereafter identify probable roles of individual hosts within a domain by deducing the knowledge from their names. A poorly secured workstation, isolated from the main network, may ideally be used for hacking purposes because there would be a little chance to detect signs of an installed backdoor. Backdoors. A backdoor is a program or a set of related programs that a hacker installs on the victim computer to allow access to the system at a later time. Symantec security research centers around the world provide unparalleled analysis of and protection from IT security threats that include malware, security risks. Spiare qualsiasi conversazione e rubare la password di Facebook e quella di qualunque account. Requisiti il tuo PC e la presenza della vittima. If you dont know, Brutus is one of the fastest, most flexible remote password crackers you can get your hands on its also free. It is available for Windows. NETSTAT n Displays addresses and port numbers in numerical form. Play Diablo 2 Online With Keygen Generator. This post defines what Remote Access Trojans are, talks about Remote Access Trojan detection, removal techniques available explains the common RATs. Complete list of types of malware along with all Cyber terminologies explained with examples and proper classification. What it is and How it attacksWelcome to worldwide anonymous hackers official website. If you want to learn hacking, and to know more about our network,contact news visit here. A backdoors goal is to remove the evidence of initial entry from the systems log. But a nice backdoor will allow a hacker to retain access to a machine it has penetrated even if the intrusion factor has in the meantime been detected by the system administrator. Resetting passwords, changing disk access permissions or fixing original security holes in the hope of remedying the problem may not help. A trivial example of a backdoor is default BIOS, router or switch passwords set either by careless manufacturers or security administrators. A hacker could simply add a new user account with administrator privileges and this would be a sort of backdoor, but far less sophisticated and easy detectable. Adding a new service is the most common technique to disguise backdoors in the Windows operating system. This requires involving tools such as Srvany. Srvinstw. exe that comes with the Resource Kit utility and also with Netcat. The principle of this operation is that the srvany. The latter, in turn, listens on an appropriate port for any connection. Once connected, it will have spawned a remote shell on the server using cmd. Just before commencing the installation of a backdoor, a hacker must investigate within the server to find activated services. He could simply add a new service and give it an inconspicuous name, but he would be better off choosing a service that never gets used and that is either activated manually or even completely disabled. It is sufficient to remove it using the Srvinstw. By doing so, the hacker considerably reduces possibility that the administrator will detect the backdoor during a later inspection. Whenever an event occurs, the system administrator will focus on looking for something odd in the system, leaving all existing services unchecked. From the hacker point of view, it is essential to hide files deeply in system directories to protect them from being detected by the system administrator. In time, a hacker will think of naming the tools to be planted on the server disk. Netcat. exe and Srvany. Hackers understand that backdoor utilities must have names that will not attract any undue attention. They use the same approach when choosing an appropriate port for a backdoor. For example, port 5. The technique presented above is very simple but efficient at the same time. It allows a hacker to get back into the machine with the least amount of visibility within the server logs we are obviously not speaking about situations where extra software is used to monitor traffic and there is an efficient event logging system installed. Moreover, the backdoored service allows the hacker to use higher privileges in most cases as a System account. This may cause some problems for an intruder because, notwithstanding the highest permissions, the System account has no power outside the machine. Under this account, disk mapping or adding user accounts is not possible. Instead, passwords can be changed and privileges may be assigned to existing accounts. With a backdoor that has captured the system administrator account, no such restrictions exist. The only problem that remains is related to the change of user password, because a password update is required to restart the related service. An administrator will undoubtedly start noticing log errors, once care for event logging and monitoring is provided. The example given above describes a backdoor that is the most dangerous one from the victim system point of view, because anyone can connect to it and obtain the highest permissions with no authentication required. It may be any scriptkiddie using a portscanning tool against computers randomly selected from the Internet. Hacker dedicated Web sites give examples of many tools that serve to install backdoors, with the difference that once a connection is established the intruder must login by entering a predefined password. CMD 2, Tini 3, Remote. NC 4 or Win. Shell 5 Fig. Telnet. Fig.   1 Win. Shell program may be used to install certain simple backdoors. I once saw a very interesting script named CGI backdoor 6. I considered this to be interesting because an attacker could execute remote commands on the server via WWW. It was a specifically created totally dynamic. What is Remote Access Trojan Prevention, Detection Removal. Remote Access Trojans RAT have always proved to be a big risk to this world when it comes to hijacking a computer or just playing a prank with a friend. A RAT is a malicious software that lets the operator attack a computer and gain unauthorized remote access to it. RATs have been here for years, and they persist as finding some RATs is a difficult task even for the modern Antivirus software out there. In this post, we will see what is Remote Access Trojan and talks about detection removal techniques available. It also explains, in short, some of the common RATs like Cyber. Gate, Dark. Comet, Optix, Shark, Havex, Com. Rat, Vorte. X Rat, Sakula and Kj. W0rm. Most of the Remote Access Trojan are downloaded in malicious emails, unauthorized programs and web links that take you nowhere. RATs are not simple like Keylogger programs they provide the attacker with a lot of capabilities such as Keylogging Your keystrokes could be monitored, and usernames, passwords, and other sensitive information could be recovered from it. Screen Capture Screenshots can be obtained to see what is going on your computer. Hardware Media Capture RATs can take access to your webcam and mic to record you and your surroundings completely violating privacy. Administration Rights The attacker may change any settings, modify registry values and do a lot more to your computer without your permission. RAT can provide an administrator level privileges to the attacker. Overclocking The attacker may increase processor speeds, overclocking the system can harm the hardware components and eventually burn them to ashes. Other system specific capabilities Attacker can have access to anything on your computer, your files, passwords, chats and just anything. How do Remote Access Trojans work. Remote Access Trojans come in a server client configuration where the server is covertly installed on the victim PC, and the client can be used to access the victim PC through a GUI or a command interface. A link between server and client is opened on a specific port, and encrypted or plain communication can happen between the server and the client. If the network and packets sentreceived are monitored properly, RATs can be identified and removed. RAT attack Prevention. RATs make their way to computers from spam emails, maliciously programmed software or they come packed as a part of some other software or application. You must always have a good antivirus program installed on your computer that can detect and eliminate RATs. Detecting RATs is quite a difficult task as they are installed under a random name that may seem like any other common application, and so you need to have a really good Antivirus program for that. Monitoring your network can also be a good way to detect any Trojan sending your personal data over the internet. If you dont use Remote Administration Tools, disable Remote Assistance connections to your computer. You will get the setting in System. Properties Remote tab Uncheck Allow Remote Assistance connections to this computer option. Keep your operating system, installed software and particularly security programs updated at all times. Also, try not to click on emails that you dont trust and are from an unknown source. Do not download any software from sources other than its official website or mirror. After the RAT attack. Once you know youve been attacked, the first step is to disconnect your system from the Internet and the Network if you are connected. Change all your passwords and other sensitive information and check if any of your accounts has been compromised using another clean computer. Check your bank accounts for any fraudulent transactions and immediately inform your bank about the Trojan in your computer. Then scan the computer for issues and seek professional help for removing the RAT. Consider closing Port 8. Use a Firewall Port Scanner to check all your Ports. You can even try to back track and know who was behind the attack, but youll need professional help for that. RATs can usually be removed once they are detected, or you can have a fresh installation of Windows to complete remove it off. Common Remote Access Trojans. Many Remote Access Trojans are currently active now and infecting millions of devices. The most notorious ones are discussed here in this article Sub. Sub. 7 derived by spelling Net. Bus an older RAT backward is a free remote administration tool that lets you have control over the host PC. The tool has been categorized into Trojans by security experts, and it can be potentially risky to have it on your computer. Back Orifice Back Orifice and its successor Back Orifice 2. Remote Access Trojan. There has been a controversy that this tool is a Trojan, but developers stand upon the fact that it is a legitimate tool that provides remote administration access. The program is now identified as malware by most of the antivirus programs. Dark. Comet It is a very extensible remote administration tool with a lot of features that could be potentially used for spying. The tool also has its links with the Syrian Civil War where it is reported that the Government used this tool to spy on civilians. The tool has already been misused a lot, and the developers have stopped its further development. K It is an advanced remote administration tool. Not meant for beginners and amateur hackers. It is said to be a tool for security professionals and advanced users. Havex This trojan that has been extensively used against the industrial sector. It collects information including the presence of any Industrial Control System and then passes on the same information to remote websites. Sakula A remote access Trojan that comes in an installer of your choice. It will depict that it is installing some tool on your computer but will install the malware along with it. Kj. W0rm This Trojan comes packed with a lot of capabilities but already marked as a threat by many Antivirus tools. These Remote Access Trojan have helped many hackers compromise millions of computers. Having protection against these tools is a must, and a good security program with an alert user is all it takes to prevent these Trojans from compromising your computer. This post was meant to be an informative article about RATs and does not in any way promote their usage. There may be some legal laws about the usage of such tools in your country, in any case. Read more about Remote Administration Tools here.