Don't download the SHC Community
By Nick Farrell
04 January 2008
INSECURITY outfit CA Security is warning punters not to join shopping giant Sears' SHC community.
If you visit Sears.com and Kmart.com you get the chance to join something called My SHC Community and to download some software to aid in 'community participation'.
CA claims that the software acts as a proxy to every web transaction made on the compromised computer. In short it is spyware that tracks all Internet usage, including banking logins, and email.
All data transmitted to and from a system is intercepted. The spyware has been identified as a variation of MarketScore which is spyware that is found by CA's products.
A compromised system monitors and transmits a copy of all Internet traffic. It will monitors secure sessions which may include shopping or banking sites. For some reason it will records and transmit "the pace and style with which you enter information online and snuffle the header section of personal emails.
It has the ability to combine any data intercepted with credit information.
The data was not even being sent to Sears, but a domain called oss-content.securestudies.com with the IP address 220.127.116.11. The owner of this site is none other than comScore which is an internet marketing research outfit.
CA Spyware Scorecard
Some people have asked me what criteria of the CA Anti-Spyware Scorecard the Sears proxy software violates. Here are the clearest violations:
Installs itself or any other item without clear notice to user and obtaining user permission at time of installation'
Without obtaining user permission, takes the following action: Proxies, redirects or relays the user's network traffic or modifies the networking stack to send traffic through a third-party server
Transmits User Data without clear notice to the user and obtaining user permission
Proxies Genetic Heritage
As I mentioned yesterday, the Sears proxy software is similar to other software CA Anti-Spyware detects by the names Netsetter, MarketScore (and lots of variants), RelevantKnowledge, InternetAccelerator. This software is all related and shows signs that it was created by the same group. All of these companies and product names appear to be the predecessor to the current day comScore -- the registrants of the domains to which the data intercepted by the Sears proxy data is sent. CA Anti-Spyware detects this new software as the Sears.com proxy. When I analyzed the binary code, it has similarities to the software mentioned above. Using the program PEEK, I could see in plain ascii characters in long strings that were used by RelevantKnowledge and Netsetter, for example, the following strings (appear to be registry keys) are present:
In addition, from a behavior standpoint, the Sears proxy operates similarly to the old software. The network traffic going to comScore, the binaries looking similar to other comScore binaries, and similar overall behavior leads me to believe the Sears proxy is directly related to Netsetter, MarketScore, Internet Accelerator and RelevantKnowledge.
Note: all other aspects of yesterday's blog remain unchanged. Highlights:
The proxy remains a significant threat to privacy
Both form data and proxy data are sent to third party comScore
Sears says all data resides on a ‘confidential database' owned by myshccommunity.com (domain registered to Sears), but when I analyze network traffic, it is sent to a domain registered to comScore
Lack of prominent notice