MALWARE via SUDOKU via EXCEL SHEET

1.  Sudoku is good for you brain....but it may compromise your PC if you have downloaded one of the excel files with embedded malicious script inside that offers you to play the subject game. Peter Szabo from SophosLabs has identified a piece of malware that resides behind a Microsoft Excel-based Sudoku generator. The Malware developed in Visual Basic requires macros, a scripting language that allows users to create equations based on values in different columns and rows. Microsoft – Malware behind Microsoft Excel-based Sudoku generator.

CLICK TO ENLARGE

2.   Although by default the macros are disabled in any Microsoft Office application....but any one who downloads the excel file would eventually enable the macros that run the script to play the game...so he can keep playing the game while the script in the background sets up the malware and establishes contact with its master bot.....so like always the updated Antivirus on the system will keep sitting without catching up anything.....so comes the importance of packet analyzers like Wireshark....ethreal etc...but then it becomes slight technical which in most cases would be out of purview for a common user.

FLAME on way to commit SUICIDE ?

1.    Further to my post on FLAME earlier which made a point wise summary based on my various reads across the web,here is something more interesting.....

2.    The creators of Flame have sent a 'suicide' command that removes it from infected computers ie  it has gotten orders to vanish, leaving no trace.As was mentioned in the post earlier that Flame may delete itself from systems that have been fully exploited without leaving any trace has come true soon......

3.   More on the subject at the link ahead and Thanks THN

 http://thehackernews.com/2012/06/flame-spy-virus-going-to-suicide.html

THREATS TERMINOLOGY & GLOSSARY : PART 1

1. The term VIRUS is still used in talks amongst the victims of so many threats which are relatively unknown to the normal user.Here I am putting down the commonly known present day threat terminology.I am missing out on the regular ones that include Malware,adware,spyware,spam etc....

BACKDOOR 

2. A remote administration utility which bypasses normal security mechanisms to secretly control a program, computer or network. These utilities may be legitimate, and may be used for legitimate reasons by authorized administrators, but they may also be misused by attackers. A backdoor is usually able to gain control of a system because it exploits vulnerabilities, bugs or undocumented processes in the system's code. 

A Variation: The IRC Backdoor 

3. There also exist IRC backdoors, which are controlled via bots hidden in specific invite-only IRC channels accessible only to the attacker; these bots serve as the client component of the traditional client-server backdoor arrangement. 

BLUE TOOTH WORM 

4.  A platform-specific type of worm that propagates primarily over a Bluetooth network. This type of worm is almost always designed to function on mobile devices, which make more use of Bluetooth connectivity than computers. 

BOT 

5. A malicious program that, on being installed onto a computer system, allows the attacker to enslave the system into a network of similarly affected systems known as a botnet. The individual computers in a botnet may also be referred to as a bot or a zombie. 

BOTNET 

6.  A portmanteau formed from the words robot and network, a 'botnet' is a network of infected computers that can be remotely controlled by an attacker, usually via a command-and-control (C&C) server. Each infected computer may be known as a bot , a zombie computer , or a zombie . 

BROWSER HELPER OBJECT (BHO) 

7.   A type of web browser plug-in specifically designed for use with the Microsoft Internet Explorer browser. A Browser Helper Object (BHO) executes automatically every time the browser is launched and provides functionality that is not built-in to the browser. 

CROSS SITE SCRIPTING 

8.   A type of attack in which malicious scripts are injected into a legitimate website in oder to be served to subsequent site visitors. Cross site scripting (XSS) attacks can result in a variety of effects, including hijacked web browsing sessions, stolen session cookies, information theft and more. As more people become increasingly dependent on web-based services, XSS attacks are becoming increasingly common. 

DENIAL OF SERVICE

9.   A type of Internet-based attack that aims to deny legitimate users access to a service (for example, a website or a network) by overloading a relevant computer resource or network device. The most common type of Denial of Service (DoS) attack takes the form of a massive amount of requests being sent from a host machine to the target, for example, a government website server. 

ICMP Flood

10.   The attackers sends out a flood of ICMP_ECHO packets to the target, swamping CPU usage and effectively rendering the target unusable until the flood is ended or the target is reset or restarted. 

Peer to Peer attack

11.   Attacker exploit bugs in peer-to-peer servers and redirect clients from the peer-to-peer server to the target server instead, flooding the target with thousands of connections and overwhelming its resources. 

Application level floods: A DoS attack carried out via particular applications, most commonly Internet chat systems. The most common kind of flood is an IRC flood, which is carried out on the popular IRC chat system. 

DISTRIBUTED DENIAL OF SERVICE (DDOS)

12.   A type of attack conducted over the Internet, using the combined resources of many computers to bombard, and frequently crash, a targeted computer system or resource (e.g., a program, website or network). 

GENERIC DETECTION

13.   A new type of sophisticated detection that is being increasingly used by antivirus programs to identify programs with malicious characteristics. Unlike more traditional detections (also known as signature-based or single-file detections) a Generic Detection does not identify a unique or individual malicious program. Instead, a Generic Detection looks for broadly applicable code or behavior characteristics that indicate a file as potentially malicious, so that a single Generic Detection can efficiently identify dozens, or even hundreds of malware. 

POLYMORPHIC VIRUS

14.   A virus that mutates, or modifies, its own code at various intervals. The changes in code typically occur each time the virus replicates, or infects a new machine. Detection and disinfection of a polymorphic virus can be very challenging, as mutating code makes traditional signature-based detection methods ineffective. Nowadays, many antivirus programs instead use heuristic analysis to identify polymorphic viruses.

POLYMORPHISM

15.   The act of a virus 'mutating' parts of its code at various intervals in order to evade detections. By constantly changing its code, a virus ensures that each iteration of its code looks different from the preceding one, making it impossible for traditional signature-based antivirus programs to identify the two iterations as one and the same virus. These so-called 'mutating viruses' can be divided into polymorphic and metamorphic viruses. 

Polymorphic Versus Metamorphic 

16.   A metamorphic virus works performs its mutation routine differently. Rather than using encryption to obfuscate its virus body, a metamorphic virus 'rearranges' entire chunks of actual code between iterations in order to create a seemingly different virus. The changes in code are directed by a metamorphic engine and despite the alterations, do not affect function - that is, the virus is still able to perform the same malicious actions through each iteration. Fortunately, the major code changes performed by a metamorphic virus require a high degree of technical skill from the virus author, and there are very few such viruses in the wild so far.

ZERO DAY

17.   A type of attack that exploits a recently publicized vulnerability or security loophole, before program vendors or the security community are able to develop a patch for the vulnerability. The period between the public announcement of a vulnerability and the first release of a patch fixing the vulnerability is also sometimes referred to as "zero hour" – even if the actual timespan is longer than an hour. Dealing With Zero-Day attacks A zero-day attack can be very destructive, as vulnerable systems generally have few defenses against it. 

Common Malware Symptoms

If you are malware hit....u r likely to see one or few or all of these symptoms:

 Your programs and files are suddenly missing.
 Homepage of your web browser has changed.
 Search results are being redirected.
 You start ending up at websites you didn't intend to go to.
 New icons & programs appear on the desktop that you did not put there.
 Your desktop background has changed without your knowledge.
 Your programs won’t start.
 Your security protection have been disabled for no apparent reason.
 You cannot connect to the internet or it runs very slowly.
 Strange or unexpected toolbars appear in your web browser.
 Takes longer to start and runs more slowly than usual.
 Computer shows strange error messages or popups.
 Freezes or crashes randomly.
 Computer is performing actions on its own.
 You cannot access security related websites.

FLIRT BOTS

1.   I am sure most of you at at some point of time in your cyber surfing would have come across chat/messenging softwares like MSN or yahoo to mention a few....now although pretty old for the regular security guys, but thought of mentioning it here in my blog of how many of us succumb to the meanly desires of hackers via FLIRT BOTS.....u heard it correctly they are known as FLIRT BOTS.... 

2.  Here's how Flirt Bots work:

- The Bot strikes up a conversation in a chat room

- The Bots use a series of easily configurable "dialogue scenarios" with pre-programmed questions and discussion topics to compile a report on every person it meets

E.g.: ilovyou@yahoo.com says: "hey, whats up?" and further to this conversation they are invited to visit a website which could be used for any variety of malicious activity.

E.g.: ilovyou@yahoo.com says: "Ok go to http://??????.??/?????? and accept the invite on the page baby"

3.   In this case the victim is sent to a website "?????????.com" and is asked to provide personal information including credit card details in order to view the "webcam."

4.   The site can be used for many things - to host malicious downloads, or to try to sell you Fake AntiVirus software. The URL can do and host whatever the "bot master" specifies it to be .Frequently cyber-criminals collect a database of personal information and sell it to the highest bidder or anyone who will pay

5.   These "Flirt Bots", were first reported as a proof of concept(Evidence that demonstrates that a business model or idea is feasible.) by PC Tools in 2007.Thanks http://www.pctools.com