Attacks/Breaches
8/7/2012
11:21 AM
Connect Directly
RSS
E-Mail
50%
50%

Beware Phish Email Attack Targeting ADP, Payroll Systems

Emails that appear to come from ADP--and other payroll processing providers--try to exploit PCs using a known Java vulnerability.

11 Security Sights Seen Only At Black Hat
11 Security Sights Seen Only At Black Hat
(click image for larger view and for slideshow)
Beware phishing emails labeled as being from ADP--and other payroll processing providers--which are really designed to exploit PCs using a known Java vulnerability.

According to a security alert issued last week by Automatic Data Processing (ADP), its customers have been receiving fraudulent emails with subject lines such as "ADP Generated Message: First Notice--Digital Certificate Expiration" and "ADP Security Management Update."

"Please note, these emails do not originating (sic) from ADP and they do contain malicious links," according to the ADP advisory. "ADP is working with our security vendors and fraud prevention team to identify and contain the source(s) of these emails."

Security experts said that over the past couple of weeks, many outsourced payroll services customers--not ADP customers--have been targeted by phishing emails that warn that the digital certificate the business uses to communicate with their payroll provider is set to expire. But the link provided for "renewing your digital certificate" instead routes a user to multiple websites, ending in a site that delivers multiple exploits, including one that targets a Java runtime environment (JRE) vulnerability, CVE2012-1723. That vulnerability was patched by Oracle on June 13, but it apparently remains widely unpatched.

[ Read Social Phishing Spikes As Spam Declines, IBM Finds. ]

Attackers began targeting the related vulnerability in exploits beginning in early July, in part because targeting Java helps them sidestep Windows defenses, and the attacks have been steadily increasing. "The Java exploitation process is too easy for the bad guys not to revisit it. The attacker does not have to think about problems with ASLR/DEP, SafeSEH, and other security mechanisms included in the latest versions of Microsoft Windows," according to a blog post from Aleksandr Matrosov, a senior malware researcher at ESET.

According to an analysis of the Java vulnerability published by Microsoft Malware Protection Center researcher Jeong Wook Oh, these types of attacks "show a high success rate with exploitation when Java Runtime Environment is not updated to the latest secure version."

The combination of the Java vulnerability and payroll managers is apparently too big a target for attackers to pass up. "Few things are as juicy for the bad guys as getting a key-logger onto the computer of someone who manages payroll," said SANS incident handler Daniel Wesemann in a blog post. "HR/payroll employees tend to have access to personal data of staff and usually have some form of access to a well-stocked bank account that is used to pay the wages."

From an attacker's perspective, one of the virtues of the payroll phishing campaign is that it's self-selecting--on the part of the victim--meaning that attackers are more likely to net a large number of actual payroll managers. "The average recipient of such a phish ... would have no idea who or what ADP is, and would be highly unlikely to click," Wesemann said. "But [an] HR/payroll employee of a company that actually uses ADP services would certainly be alarmed to read, for example, that his/her access to ADP is about to be cut off."

How should payroll providers--or any security-conscious organization--defend against the wave of targeted phishing attacks? The number-one priority is to patch the "deadly" Java JRE vulnerability because it's being "widely being exploited in the wild at the moment," said Wesemann. "Even better, uninstall Java JRE completely from your computers if you can get away with it," he said.

Unfortunately, antivirus software can't be relied on to stop these types of phishing emails. According to VirusTotal, by Tuesday, the phishing emails related to the ADP attack, for example, were being detected by only eight out of 41 antivirus engines.

Accordingly, Wesemann recommends treating human resources and payroll personnel to internal training of the "don't click this link" variety, reminding them that a single click might be the only thing standing between them and their business being owned by an attacker.

As part of that training, Wesemann also recommended reviewing legitimate communications from the company's payroll providers. "Acquaint yourself with the email logs, so that you know how real email coming from this provider looks like," he said. "This knowledge is priceless during an incident, and might even help you to automatically block some of the more egregious phishes."

When it comes to the battle against distributed denial-of-service attacks, you're not alone. With the increasing use of third-party service providers, your organization likely has a huge arsenal of bandwidth and know-how at its disposal. In our Using Service Providers To Manage DDoS Threats report, find out how to effectively marshal the resources among your providers and integrate them with your own security measures into a strategic and comprehensive DDoS protection plan. (Free registration required.)

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
Partner Perspectives
What's This?
In a digital world inundated with advanced security threats, Intel Security seeks to transform how we live and work to keep our information secure. Through hardware and software development, Intel Security delivers robust solutions that integrate security into every layer of every digital device. In combining the security expertise of McAfee with the innovation, performance, and trust of Intel, this vision becomes a reality.

As we rely on technology to enhance our everyday and business life, we must too consider the security of the intellectual property and confidential data that is housed on these devices. As we increase the number of devices we use, we increase the number of gateways and opportunity for security threats. Intel Security takes the “security connected” approach to ensure that every device is secure, and that all security solutions are seamlessly integrated.
Featured Writers
White Papers
Cartoon
Current Issue
Dark Reading's October Tech Digest
Fast data analysis can stymie attacks and strengthen enterprise security. Does your team have the data smarts?
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2014-7052
Published: 2014-10-19
The sahab-alkher.com (aka com.tapatalk.sahabalkhercomvb) application 2.4.9.7 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

CVE-2014-7056
Published: 2014-10-19
The Yeast Infection (aka com.wyeastinfectionapp) application 0.1 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

CVE-2014-7070
Published: 2014-10-19
The Air War Hero (aka com.dev.airwar) application 3.0 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

CVE-2014-7075
Published: 2014-10-19
The HAPPY (aka com.tw.knowhowdesign.sinfonghuei) application 2.0 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

CVE-2014-7079
Published: 2014-10-19
The Romeo and Juliet (aka jp.co.cybird.appli.android.rjs) application 1.0.6 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Follow Dark Reading editors into the field as they talk with noted experts from the security world.