Poisoning Google with Malware

May 19th, 2009 2 Comments »

There is a new threat that is filling Google search results with links to malicious links. CERT warns this threat is spreading quickly, especially over the last few days. According to CERT there are thousands of legitimate sites infected with this threat now called Gumblar attack.

The attack will steal FTP accounts on the victims machine to further spread its reach. It also will take control of the victims browser which is how it replaces Google search results. ScanSafe has reported out of the 3,000 known infected sites, 800 of those are within the last week.

As of right now, the Gumblar attack is considered relatively small scale. With access to victims FTP account information and strong obfuscation, it is expected the growth will continue. Typically the amount of sites infected with a known threat declines, this isn’t the case with the Gumblar attack.

The Gumblar attack uses known flaws in Adobe software products (that typically do not get patched quickly) to install the malicious software.

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Author: Christopher

(2 votes, average: 5.00 out of 5)
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Crimeware kits for sale

May 16th, 2009 1 Comment »

Independent research reports from several different internet security firms are warning about the increased level of technology, sophistication, and organization that criminals are employing in their endeavors to steal, defraud, extort, and otherwise scam individuals and corporate entities for their money. Today’s hacker wannabe doesn’t even have to be particularly skilled technologically. He just has to be willing and able to cough up the money for a good crimeware kit, which can cost upwards of $3000.00 depending on the capabilities desired.

According to Symantec, 3 phishing kits were responsible for over 40 percent of the phishing attacks they observed during a recent 6 month interval. These kits come complete with sample phishing web sites and email messages, and their availability on the black market can be linked to the 53 percent increase in the number of phishing attacks observed during that same period.

Other crimeware kits such as MPack combine multiple attack types, exploiting both web server and client vulnerabilities. Additionally, kits are available that allow criminals to customize Trojans in order to target specific sectors or agencies. Finjan is reporting that these crimeware Trojan kits create new binary files with each use, making signature-based detection extremely difficult. These kits are also capable of generating Command and Control modules for remote control of distributed Trojans, in effect creating botnets.

These kits show all the traits of professionally developed software suites, utilizing the latest web 2.0 programming technologies. This has resulted in skyrocketing infections within the most popular web 2.0 sites, including social networks and P2P file-sharing sites. In fact, according to Websense, 60 percent of the most popular sites on the internet either hosted crimeware, or linked to malicious websites which hosted crimeware during the first 6 months of 2008. Various MySpace hacks for example allowed criminals to view private profiles and capture logon details, enabling the hackers to use the hacked accounts to send spam or host malware.

One of the newest kits available to hackers was discovered by Panda Security in June. It converts traditional Trojans into worms. This means that once a machine is infected with the Trojan, other computers sharing the same network could be infected without the users opening an infected email attachment or visiting a malicious site. Such hybrids spread much more quickly than the original Trojans from which they’re created.

Crimeware kits are distributed to potential buyers, who use private chat facilities to negotiate and consummate the transactions. Sites which host torrent trackers also index many hacking toolkits. Of course, the illegal gangs and cybercriminals have their own distribution and management channels. These organizations seem very much like a cross between modern high-tech business enterprises and mafia-style organized crime. The top managerial tier does not engage directly in hacking activities, but directs middle management layers which control the distribution of crimeware and crimeware kits to lower tiers. These lower tiers are the actual hackers collecting the stolen data, identities, credit card numbers, etc. They also control the botnets which are used to launch attacks, send spam, and expand their networks.

The growing sophistication of crimeware (and the ease with which it can now be developed and deployed), the increased use of blended attacks involving multiple attack vectors, and the continual refinement of the criminal organizations behind cybercrime are all symptoms of the trend away from malware created for glory or anarchistic destruction and toward crimeware geared for stealth and profit.

Sophisticated kits generate custom trojans for stealing data and conscripting into C & C networks (botnets). — Finjan Web Security Trends Report Q2 2008.

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Author: Christopher

(1 votes, average: 5.00 out of 5)
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Fake Antivirus Infections Prevalent

November 30th, 2008 No Comments »

Fake Antivirus programs – also known as Rogue Security software – continue to plague PC users.  Last week, when Microsoft pushed out it’s weekly security patches, the Malicious Software Removal Tool targeted one particular file responsible for most of these extortionist programs, known as FakeSecSen.  Data released by Microsoft indicates that this malware was removed from over 990,000 computers.  Approximately 5 out of every 1000 PCs showed signs of infection.

FakeSecSen has gone by many names, including Vista Antivirus 2008, Windows Antivirus, XPert Antivirus, Power Antivirus, Antivirus 2009, and several variations of these terms.  These programs pretend to be anti-malware solutions, but in fact they do not really scan PCs, they report finding dozens or hundreds of infections which actually don’t exist, and prove extremely annoying until the users either pay the “upgrade” or “registration” fees or find a way to remove them.  Removal generally requires a genuine anti-malware utility or entails long, complicated manual steps involving registry entries, hidden files, and invisible processes.

Infection often occurs when users visit a compromised web site and click in pop-up windows offering a free security scan or free security software downloads.  Spam emails and even “drive-by” infections are also possible.

It’s nice that Microsoft has addressed this in their most recent patch release, but this is small consolation to those who become infected with this type of malware after last Tuesday, or those who have suffered for months before that.  A good computer / internet security suite such as those offered by Kaspersky Internet Security offer full protection against FakeSecSen and related malware.

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Author: Christopher

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Beware of fake Adobe Flash installs

August 5th, 2008 No Comments »

Adobe is reporting an unusually high number of social networking sites hosting fake Adobe Flash installations.  These installations are installing malicious software on to your computer.   Like all software installs, it is highly recommended you verify the URL before accepting a download and making sure your antivirus protection is up to date and active.

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Author: Christopher

(2 votes, average: 3.00 out of 5)
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Malware Statistics July 2008

August 2nd, 2008 No Comments »

Throughout July the majority (76%) of all malware identified fell into the Trojan category. Of the 20,704 unique malware findings in July, 20,000 of them were found in the wild.

1 Trojan.Win32.DNSChanger.ech
2 Trojan-Downloader.WMA.Wimad.n
3 Trojan.Win32.Monderb.gen
4 Trojan.Win32.Monder.gen
5 not-a-virus:AdWare.Win32.HotBar.ck
6 Trojan.Win32.Monderc.gen
7 not-a-virus:AdWare.Win32.Shopper.v
8 not-a-virus:AdTool.Win32.MyWebSearch.bm
9 Trojan.Win32.Agent.abt
10 Worm.VBS.Autorun.r
11 Trojan.Win32.Agent.rzw
12 Trojan-Downloader.Win32.CWS.fc
13 not-a-virus:AdWare.Win32.Mostofate.cx
14 Trojan-Downloader.JS.Agent.bi
15 Trojan-Downloader.Win32.Agent.xvu
16 not-a-virus:AdWare.Win32.BHO.ca
17 Trojan.Win32.Agent.sav
18 Trojan-Downloader.Win32.Obitel.a
19 Trojan.Win32.Chifrax.a
20 Trojan.Win32.Agent.tfc

Source: Kaspersky Lab

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Author: Christopher

(1 votes, average: 5.00 out of 5)
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