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Security Response

Showing posts tagged with Endpoint Protection (AntiVirus) remove filter
Vivian Ho | 30 Jun 2009 | 0 comments

The Internet has gone wild since Michael Jackson, the “King of Pop,” was reported dead on June 25. Symantec Security Response has already blogged about how we observed spammers trying to capitalize on this event in many ways, both with messages including malware, and scams tied to this talented celebrity’s death. We expect that spam and malware will keep coming in, given Michael Jackson’s popularity and following. Recipients should be extra cautious about messages that appear to be related to Jackson’s death, especially any email that comes from an unknown or unexpected source.

The following are some examples of what we have seen circulating:

Sample 1.1

Spammers hide behind a spoofed message, which appears as a rip-off of a familiar social network notification, in an attempt to try to trick recipients to...

Symantec Security Response | 30 Jun 2009 | 0 comments

Symantec Security Response has discovered a mass-mailing worm using Michael Jackson's death as a bait. The worm sends out spam emails with the subject “Remembering Michael Jackson” and an attachment named “Michael songs and pictures.zip.” The .zip file contains another file called “MichaelJacksonsongsandpictures.doc.exe,” which is a copy of the worm that is executed on the user’s machine when the file is opened.
 
Symantec has detection for this worm as W32.Ackantta.F@mm. It is important to keep in mind that W32.Ackantta.F@mm spreads not only through email, but also via removable drives using autorun.inf.
 
Below is a snapshot of the email that W32.Ackantta.F@mm sends out:

...

Mayur Kulkarni | 30 Jun 2009 | 0 comments

We know that 419 scammers aren’t the least bit concerned with email headers and will continue using free Webmail services to send spam. However, they recognize the fact that most anti-spam filters are using the body characteristics of scam emails to effectively bar these messages from reaching a user’s inbox. So, they feel they must always change their storyline, as far as the message body is concerned anyway. In recent times, spammers have been regularly using text-based attachments (.rtf, .doc, and .txt) in an attempt to evade anti-spam filters. A new tactic observed is the use of URLs, where the actual message is posted on a free Web-hosting site for the recipient to read.

Here is a snapshot of one of these types of URL spam messages:

 imagebrowser image

As shown in the above example, a URL is added at the end of the message. If a...

Eric Park | 29 Jun 2009 | 0 comments

A typical phishing email message tries to represent (falsely) a single institution. For example, a spammer sends a phishing message, forging the email to appear as if it’s from a financial institution. The recipient is then asked to enter personal information for some fictional reason (for example, “verify your identity”). In an effort to obtain as much information as possible about the unsuspecting user, the spammer usually asks for more information than what is asked at a legitimate website. While a legitimate site may only ask for username and password, a phishing site usually seeks additional information such as a credit card or pin number, mother’s maiden name, and/or a social security number. Once the user hits the “submit” button, the private information is sent into the hands of criminals.

Symantec has recently observed a spam message that is pretending to be from HM Revenue & Customs in the United Kingdom. The message is very...

John Park | 29 Jun 2009 | 0 comments

During one of my recent journeys around the Internet there was a particular ad being displayed on a website that caught my attention. The type of ad I am referring to wasn’t a totally new concept—ads like it have been running on websites for years, and actually found their start in print in the decades previous. You must have seen them. These are the ads that promise incredible monetary returns for working from home, but without doing a lot of work. Recently, this site and many others have been serving "Google pays me $5k a month" ads:

 

 

 

 

These particular ads usually redirect users to one of the following sites:

jamesmakesmoney.com
jasongetsrich.com
jennifersmoneyblog.com
joshmadecash.com
kevinmakesmoola.com...

Symantec Security Response | 26 Jun 2009 | 0 comments

This week has seen the tragic deaths of three iconic American super stars: Ed McMahon, Farrah Fawcett, and Michael Jackson. As always, events such as these seem to be prime targets for spammers and malicious code authors alike.

Internet users should expect to see a flurry of threats seeking to play upon the emotions and curiosity of the public around these events. If you’re looking for news, videos, pictures, or any information regarding these individuals and their lives, Symantec recommends that you only visit sites you’re familiar with and trust. Don’t click on every link you see related to this story and always keep your security solutions up-to-date.

For example, Symantec has observed spam that appears to be a spoof on CNN that actually contains a link to a malicious Web page.

 

 

...

Robert Vivas | 26 Jun 2009 | 0 comments

The spammers of enhancement medication have recently revitalized the use of obfuscated image attachments and are therefore reemerging as a top threat to email users. By using .jpg-formatted image attachments, these spammers are trying every trick in the book to bypass spam filters, including randomizing the subject lines with misspelled sexually suggestive catch phrases, using minimal message body content, and closing with obfuscated attached images.

Here are some examples of the kinds of message body content that has been observed:

 

•    Canadiian policce ads pulled from gang Web sites
•    Chocoholic squtirrel steals treatts from Finnish shop
•    Perpetual Student Wants Onnne More Year
•    The animal that stows its tongue inn its rib cage
•    New Orleans R&B star begins posthumous mayoral bid

The...

Eric Park | 23 Jun 2009 | 0 comments

With more people using the Internet now than ever before, free homepage hosting providers are increasing in popularity. These sites offer users free Web space so that they can make their own homepage, publish it, and share with friends and family. When the popularity of this type of service was near its peak, spammers began to use these websites as part of their spamming efforts. This was accomplished through the creation of many free websites, often using automation, and sending spam with a newly created webpage URL. The randomization of such URLs hindered typical anti-spam efforts. When an unsuspecting user clicked on one of these newly created URLs, more often than not they were taken to a page similar to the one shown here:

 

 

While this spam material (online pharmacy spam) is...

Livian Ge | 22 Jun 2009 | 0 comments

    近期出现的W32.Fujacks.CA蠕虫值得关注。经赛门铁克安全响应中心安全专家分析,该蠕虫可能是由之前大名鼎鼎的熊猫烧香病毒的源代码修改而成。它采用了与熊猫烧香相似的捆绑感染方式,在计算机中寻找并感染.exe文件。但不同的是,新变种比较“低调”— 被以往病毒变种感染的文件的图标会变成熊猫烧香的图案,中毒特征非常明显;而被W32.Fujacks.CA感染的文件的图标并不会改变,令用户不易察觉。 

 

    除了通过感染方式传播外,W32.Fujacks.CA还会试图去猜测开启文件共享服务主机的密码,一旦猜测成功,它就能感染这些主机。另外,W32.Fujacks.CA还会试图下载并执行恶意代码。 

 

    虽然目前还不能确认该病毒是否与熊猫烧香有关,我们仍然提醒用户小心防范,注意上网安全,尽可能使用比较复杂的用户密码。

 

Livian Ge | 22 Jun 2009 | 0 comments

    最近有组织在网上爆出Facebook网站的信息保护漏洞。通过利用这个漏洞,可以查看到Facebook中本来设定为不公开的、只有好友或社群成员才可见的个人信息, 如生日、性别、住址、出生地、恋爱状况、政治面貌、信仰等。 为证实该漏洞的确存在,该组织还在网上公布了他们利用该漏洞破解的一些耳熟能详的互联网风云人物在Facebook中的不公开信息。

 

    我们不禁质疑:网络平台中的信息保护设置真的可靠吗?

 

    如今,大家对网络信息平台的使用越来越频繁,除了Facebook一类的交友网站,博客、网络相册等都是我们常用的信息共享工具。出于对网站安全技术的信任,有的用户在选择了信息不公开、或只与圈内好友共享信息后,便会“放心”地发布很多隐私信息和内容到网站上,如家庭住址、电话号码、工作单位、甚至情感生活、医疗健康等敏感话题。然而,一旦网站出现漏洞并被不怀好意的人士利用,这些信息很可能遭到泄露,给用户带来不必要的麻烦甚至是经济损失。

 

    我们建议用户养成良好的上网习惯,防患于未然:

 

1. 尽量避免在网络上透露敏感信息,尤其是生日。攻击者很可能利用这些信息猜测出您的密码。

2. 尽可能使用比较复杂的密码组合;不同的网站最好设置不同的密码,并定期更换。

3. 不要与他人共享密码。

4. 定期检查您在网络中的信息共享设置。

5. 避免使用自动登录,不要将您的登录信息保存在网站系统中。