New version of the Zeus financial malware adds sophisticated new mechanisms to commit online fraud New version of the Zeus financial malware adds sophisticated new mechanisms to commit online fraud - RSS feed from Security Park
(21/10/2010)
The Zeus developers keep releasing new features - such as a highly granular browser injection facility - that allow them to stay one step ahead of the IT security community, as well as fixing bugs and other issues in previous versions. This level of commitment attracts the fraudsters' business and maintains interest in the Trojan amongst security vendors, banks and law enforcement officials. And this in turn re-enforces the security circle, with hacker coders constantly tweaking and improving the malware as time goes on.
Trusteer has captured and analyzed a new version (2.1) of the Zeus financial malware and found that it has added sophisticated new mechanisms to commit online fraud and remain the Trojan of choice for criminals. Zeus has not only improved its business logic but also its ability to avoid detection and automatic analysis by antivirus vendors. Zeus is under the spotlight of security vendors, banks, and law enforcement, which forces its developers to continually improve it to avoid losing business to competing malware like Bugat, Clampi, and SpyEye. Just like commercial application developers, the creators of Zeus run an R&D programme to ensure it can avoid detection and side-step the growing number of IT security mechanisms designed to detect, block and eliminate it.
New capabilities in Zeus 2.1 include:
· URL matching based on a full implementation of the Perl Compatible Regular Expressions (PCRE) library. This allows much more flexibility for Zeus's configuration to define targets. For example, Zeus can now target all URLs that start with “https” and then zero in on those that contain specific digits and keywords. Earlier Zeus versions had a primitive regular expression implementation which provided very little flexibility in specifying target URLs.
· The injection mechanism (Zeus’s main “work horse”) now uses sophisticated regular expressions based on PCRE as well, which helps avoid detection. It can target individual web pages with elaborate injections, while not injecting into other pages. This surgical injection method creates more convincing pages and can target more banks using a single attack.
· Zeus now has a fine-grained "grabbing" mechanism, again based on PCRE, which can extract very specific areas of the page (e.g. the account balance) and report them to the C&C host. The grab mechanism provides an efficient way of collecting user data (such as account balance), as opposed to the cumbersome and wasteful way (supported by earlier Zeus variants) of having to copy the full page.
· As other researchers have already pointed out Zeus 2.1 completely changed the way it communicated with its Command &Control (C&C) servers with a daily list of hundreds of C&C hostnames, through which it cycles trying to find a live one which is a considerable improvement over the previous scheme.
· Zeus has added a 1024-bit RSA public key, which will probably be used for one-way encryption of data and authenticating the C&C server to Zeus clients.
“Since the Trusteer Secure Browsing software is installed on the PCs of millions of bank customers, automatically classifying, blocking, analyzing, and removing financial malware such as Zeus, our researchers can see enhanced attack vectors in real time,” said Mickey Boodaei, CEO of Trusteer. “The improvements are similar to those seen in commercial software, but instead of enhancements being released on a monthly or annual basis, the timescales are now being compressed to just days and weeks, largely because of the immense fraudulent revenues involved. While commercial software needs to undergo extensive quality assurance processes before being released, Zeus has the luxury of pushing rapid updates without worrying too much about software quality.”
Previous malware has risen in popularity, then been tweaked and then faded away, the enhancements in Zeus - which is currently into version 2.1 - show no signs of abating, largely because of the modular coding structure of Zeus. The modular approach, for example means that exploit hacks can be used to enhance the ability of Zeus to stage a real-time bank access attack, and so greatly extend its useful lifetime to the cybercriminals. As with any commercial application, software product maintenance and support are two of the more important reasons why users buy and use products, and Zeus has proven over the last three years that it does both very well for the cybercriminals.
"The big question is how long can Zeus stay in pole position in the malware fraud charts? Our researchers suggest that, given its ability to be morphed and enhanced, it's going to be some while yet before other malware gets a look in at the top spot. And this means that hackers have a vested interest to keep Zeus ahead of the game as far as its ability to defraud, forcing them to improve and increase their effort all the time to avoid losing the cybercriminal's business," Boodaei said.
IT security teams trying to defend against Zeus should:
1. Recognize that antivirus technology is only partially effective against modern malware such as Zeus, Bugat, and SpyEye. Many of these fly under the radar of antivirus solutions while targeting employees and stealing sensitive corporate information. This version of Zeus is extremely elusive and is virtually undetectable by antivirus products.
2. Recognize that the browser has emerged as the weakest link in the enterprise security infrastructure and is being exploited by malware authors and criminals to infect computers and steal sensitive information.
3. Protect employees, contractors, and unmanaged computers with secure browsing services, which can detect, block, and remove browser-borne malware from computers.
4. Put in place technology and processes that enable effective, and instant investigation of malware-related fraud incidents.
Phreaking
Phreaking is a slang term coined to describe the activity of a subculture of people who study, experiment with, or explore telecommunication systems, like equipment and systems connected to public telephone networks. The term "phreak" is derived from the words "phone" and "freak". It may also refer to the use of various audio frequencies to manipulate a phone system. "Phreak", "phreaker", or "phone phreak" are names used for and by individuals who participate in phreaking. Additionally, it is often associated with computer hacking. This is sometimes called the H/P culture (with H standing for Hacking and P standing for Phreaking). information on this site is for educational purposes only! Wyretap Network ©2007 - 2010
Disclaimer: The information on this site is for educational and entertainment purposes only. It is not intended to encourage or teach you to break the law, that's what TV is for, albeit in a very flawed manner. The owner(s) of this website will not be held liable for anything you choose to do with the information contained on this site. If you want to learn how to rape, murder, loot, and commit acts of terror on a monumental scale, well, you won't find it here. Instead, tune-in to your nightly news and take a lesson from your 'elected' 'leaders'.
Disclaimer: The information on this site is for educational and entertainment purposes only. It is not intended to encourage or teach you to break the law, that's what TV is for, albeit in a very flawed manner. The owner(s) of this website will not be held liable for anything you choose to do with the information contained on this site. If you want to learn how to rape, murder, loot, and commit acts of terror on a monumental scale, well, you won't find it here. Instead, tune-in to your nightly news and take a lesson from your 'elected' 'leaders'.
Social engineering techniques and terms
All social engineering techniques are based on specific attributes of human decision-making known as cognitive biases.[1] These biases, sometimes called "bugs in the human hardware," are exploited in various combinations to create attack techniques, some of which are listed here:
Pretexting
Pretexting is the act of creating and using an invented scenario (the pretext) to persuade a targeted victim to release information or perform an action and is typically done over the telephone. It is more than a simple lie as it most often involves some prior research or set up and the use of pieces of known information (e.g. for impersonation: date of birth, Social Security Number, last bill amount) to establish legitimacy in the mind of the target. [2]
This technique is often used to trick a business into disclosing customer information, and is used by private investigators to obtain telephone records, utility records, banking records and other information directly from junior company service representatives. The information can then be used to establish even greater legitimacy under tougher questioning with a manager (e.g., to make account changes, get specific balances, etc).
As most U.S. companies still authenticate a client by asking only for a Social Security Number, date of birth, or mother's maiden name, the method is effective in many situations and will likely continue to be a security problem in the future.
Pretexting can also be used to impersonate co-workers, police, bank, tax authorities, or insurance investigators — or any other individual who could have perceived authority or right-to-know in the mind of the targeted victim. The pretexter must simply prepare answers to questions that might be asked by the victim. In some cases all that is needed is a voice that sounds authoritative, an earnest tone, and an ability to think on one's feet.
Phishing
Main article: Phishing
Phishing is a technique of fraudulently obtaining private information. Typically, the phisher sends an e-mail that appears to come from a legitimate business—a bank, or credit card company—requesting "verification" of information and warning of some dire consequence if it is not provided. The e-mail usually contains a link to a fraudulent web page that seems legitimate—with company logos and content—and has a form requesting everything from a home address to an ATM card's PIN.
For example, 2003 saw the proliferation of a phishing scam in which users received e-mails supposedly from eBay claiming that the user’s account was about to be suspended unless a link provided was clicked to update a credit card (information that the genuine eBay already had). Because it is relatively simple to make a Web site resemble a legitimate organization's site by mimicking the HTML code, the scam counted on people being tricked into thinking they were being contacted by eBay and subsequently, were going to eBay’s site to update their account information. By spamming large groups of people, the “phisher” counted on the e-mail being read by a percentage of people who already had listed credit card numbers with eBay legitimately, who might respond.
IVR or phone phishing
This technique uses a rogue Interactive voice response (IVR) system to recreate a legitimate sounding copy of a bank or other institution's IVR system. The victim is prompted (typically via a phishing e-mail) to call in to the "bank" via a (ideally toll free) number provided in order to "verify" information. A typical system will reject log-ins continually, ensuring the victim enters PINs or passwords multiple times, often disclosing several different passwords. More advanced systems transfer the victim to the attacker posing as a customer service agent for further questioning.
One could even record the typical commands ("Press one to change your password, press two to speak to customer service" ...) and play back the direction manually in real time, giving the appearance of being an IVR without the expense.
The technical name for phone phishing, is vishing.
Baiting
Baiting is like the real-world Trojan Horse that uses physical media and relies on the curiosity or greed of the victim.[3]
In this attack, the attacker leaves a malware infected floppy disk, CD ROM, or USB flash drive in a location sure to be found (bathroom, elevator, sidewalk, parking lot), gives it a legitimate looking and curiosity-piquing label, and simply waits for the victim to use the device.
For example, an attacker might create a disk featuring a corporate logo, readily available off the target's web site, and write "Executive Salary Summary Q2 2009" on the front. The attacker would then leave the disk on the floor of an elevator or somewhere in the lobby of the targeted company. An unknowing employee might find it and subsequently insert the disk into a computer to satisfy their curiosity, or a good samaritan might find it and turn it in to the company.
In either case as a consequence of merely inserting the disk into a computer to see the contents, the user would unknowingly install malware on it, likely giving an attacker unfettered access to the victim's PC and perhaps, the targeted company's internal computer network.
Unless computer controls block the infection, PCs set to "auto-run" inserted media may be compromised as soon as a rogue disk is inserted.
Quid pro quo
Quid pro quo means something for something:
An attacker calls random numbers at a company claiming to be calling back from technical support. Eventually they will hit someone with a legitimate problem, grateful that someone is calling back to help them. The attacker will "help" solve the problem and in the process have the user type commands that give the attacker access or launch malware.
In a 2003 information security survey, 90% of office workers gave researchers what they claimed was their password in answer to a survey question in exchange for a cheap pen.[4] Similar surveys in later years obtained similar results using chocolates and other cheap lures, although they made no attempt to validate the passwords.[5]
Other types
Common confidence tricksters or fraudsters also could be considered "social engineers" in the wider sense, in that they deliberately deceive and manipulate people, exploiting human weaknesses to obtain personal benefit. They may, for example, use social engineering techniques as part of an IT fraud.
The latest type of social engineering techniques include spoofing or hacking IDs of people having popular e-mail IDs such as Yahoo!, GMail, Hotmail, etc. Among the many motivations for deception are:
Phishing credit-card account numbers and their passwords.
Hacking private e-mails and chat histories, and manipulating them by using common editing techniques before using them to extort money and creating distrust among individuals.
Hacking websites of companies or organizations and destroying their reputation.
Pretexting
Pretexting is the act of creating and using an invented scenario (the pretext) to persuade a targeted victim to release information or perform an action and is typically done over the telephone. It is more than a simple lie as it most often involves some prior research or set up and the use of pieces of known information (e.g. for impersonation: date of birth, Social Security Number, last bill amount) to establish legitimacy in the mind of the target. [2]
This technique is often used to trick a business into disclosing customer information, and is used by private investigators to obtain telephone records, utility records, banking records and other information directly from junior company service representatives. The information can then be used to establish even greater legitimacy under tougher questioning with a manager (e.g., to make account changes, get specific balances, etc).
As most U.S. companies still authenticate a client by asking only for a Social Security Number, date of birth, or mother's maiden name, the method is effective in many situations and will likely continue to be a security problem in the future.
Pretexting can also be used to impersonate co-workers, police, bank, tax authorities, or insurance investigators — or any other individual who could have perceived authority or right-to-know in the mind of the targeted victim. The pretexter must simply prepare answers to questions that might be asked by the victim. In some cases all that is needed is a voice that sounds authoritative, an earnest tone, and an ability to think on one's feet.
Phishing
Main article: Phishing
Phishing is a technique of fraudulently obtaining private information. Typically, the phisher sends an e-mail that appears to come from a legitimate business—a bank, or credit card company—requesting "verification" of information and warning of some dire consequence if it is not provided. The e-mail usually contains a link to a fraudulent web page that seems legitimate—with company logos and content—and has a form requesting everything from a home address to an ATM card's PIN.
For example, 2003 saw the proliferation of a phishing scam in which users received e-mails supposedly from eBay claiming that the user’s account was about to be suspended unless a link provided was clicked to update a credit card (information that the genuine eBay already had). Because it is relatively simple to make a Web site resemble a legitimate organization's site by mimicking the HTML code, the scam counted on people being tricked into thinking they were being contacted by eBay and subsequently, were going to eBay’s site to update their account information. By spamming large groups of people, the “phisher” counted on the e-mail being read by a percentage of people who already had listed credit card numbers with eBay legitimately, who might respond.
IVR or phone phishing
This technique uses a rogue Interactive voice response (IVR) system to recreate a legitimate sounding copy of a bank or other institution's IVR system. The victim is prompted (typically via a phishing e-mail) to call in to the "bank" via a (ideally toll free) number provided in order to "verify" information. A typical system will reject log-ins continually, ensuring the victim enters PINs or passwords multiple times, often disclosing several different passwords. More advanced systems transfer the victim to the attacker posing as a customer service agent for further questioning.
One could even record the typical commands ("Press one to change your password, press two to speak to customer service" ...) and play back the direction manually in real time, giving the appearance of being an IVR without the expense.
The technical name for phone phishing, is vishing.
Baiting
Baiting is like the real-world Trojan Horse that uses physical media and relies on the curiosity or greed of the victim.[3]
In this attack, the attacker leaves a malware infected floppy disk, CD ROM, or USB flash drive in a location sure to be found (bathroom, elevator, sidewalk, parking lot), gives it a legitimate looking and curiosity-piquing label, and simply waits for the victim to use the device.
For example, an attacker might create a disk featuring a corporate logo, readily available off the target's web site, and write "Executive Salary Summary Q2 2009" on the front. The attacker would then leave the disk on the floor of an elevator or somewhere in the lobby of the targeted company. An unknowing employee might find it and subsequently insert the disk into a computer to satisfy their curiosity, or a good samaritan might find it and turn it in to the company.
In either case as a consequence of merely inserting the disk into a computer to see the contents, the user would unknowingly install malware on it, likely giving an attacker unfettered access to the victim's PC and perhaps, the targeted company's internal computer network.
Unless computer controls block the infection, PCs set to "auto-run" inserted media may be compromised as soon as a rogue disk is inserted.
Quid pro quo
Quid pro quo means something for something:
An attacker calls random numbers at a company claiming to be calling back from technical support. Eventually they will hit someone with a legitimate problem, grateful that someone is calling back to help them. The attacker will "help" solve the problem and in the process have the user type commands that give the attacker access or launch malware.
In a 2003 information security survey, 90% of office workers gave researchers what they claimed was their password in answer to a survey question in exchange for a cheap pen.[4] Similar surveys in later years obtained similar results using chocolates and other cheap lures, although they made no attempt to validate the passwords.[5]
Other types
Common confidence tricksters or fraudsters also could be considered "social engineers" in the wider sense, in that they deliberately deceive and manipulate people, exploiting human weaknesses to obtain personal benefit. They may, for example, use social engineering techniques as part of an IT fraud.
The latest type of social engineering techniques include spoofing or hacking IDs of people having popular e-mail IDs such as Yahoo!, GMail, Hotmail, etc. Among the many motivations for deception are:
Phishing credit-card account numbers and their passwords.
Hacking private e-mails and chat histories, and manipulating them by using common editing techniques before using them to extort money and creating distrust among individuals.
Hacking websites of companies or organizations and destroying their reputation.
The Real ID Coming Soon!!!
Thursday, October 21, 2010
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