Menu
Whitelisting project helps industrial control systems owners find suspicious files

Whitelisting project helps industrial control systems owners find suspicious files

A new service called WhiteScope contains over 300,000 known good SCADA/ICS files

Industrial control systems have been at the center of some scary security stories recently, but investigating malware infections in such environments is not easy because analysts often having a hard time telling suspicious and good files apart.

Security researchers have identified two malware campaigns this year that targeted SCADA (supervisory control and data acquisition) systems -- Havex and BlackEnergy. Such attacks are expected to grow in number, as new reports show that state-sponsored hackers are increasingly interested in critical infrastructure companies.

Now, a newly launched service called WhiteScope provides industrial control system owners and investigators with a list of good files from SCADA products and related software. The "whitelist" can be used to pin down potentially suspicious files when investigating possible compromises.

"While participating in a few incident response engagements, I realized it's fairly difficult to know what is a 'legitimate' ICS/SCADA file and what is not," Billy Rios, the security researcher who created the new service, said on the WhiteScope site. "Given the overwhelming majority of ICS/SCADA vendors refuse to sign their software, we're stuck with determining whether files like 'FTShell.dll' or 'WFCU.exe' (both legitimate files by the way) are really supposed to be there."

Rios, who has worked for Microsoft and Google in the past, but is also known for his independent SCADA security research, has collected "known good" file artifacts like file hashes, registry changes, processes, and loaded modules for ICS/SCADA software from installation media, as well as live running systems.

The WhiteScope database that he created currently contains 346,458 files that correspond to over 80 SCADA and ICS product versions from a large number of vendors including General Electric, Schneider Electric, Rockwell Automation, Siemens and Advantech.

For now the service allows users to submit a file or a file hash through a Web form on www.icswhitelist.com to check it against those in the database. However, Rios is working on an application programming interface (API) that will allow users to submit and check multiple files and hashes at once.

"A 'hit' in the database indicates that the hash/file you've submitted was previously seen within an ICS/SCADA installation," Rios said. "A 'miss' simply indicates that WhiteScope hasn't previously seen that file before. I would first check to see if the file is signed. If the file is not signed (likely the case for ICS/SCADA), check the 'supported products' page and see if the product you are looking at is in our product list. If the product is not in the list, please consider working with us to get a good set of hashes for that product. If the product is in the product list and the file doesn't match anything we have, I would start an investigation on that file."

The researcher is also working on creating a firmware database, as well as a similar whitelist for medical device software, which is also typically not signed and can't easily be verified.


Follow Us

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags malwareintrusionsiemensgeneral electricSchneider ElectricForensicsRockwell AutomationAdvantech

Featured

Slideshows

The making of an MSSP: a blueprint for growth in NZ

The making of an MSSP: a blueprint for growth in NZ

Partners are actively building out security practices and services to match, yet remain challenged by a lack of guidance in the market. This exclusive Reseller News Roundtable - in association with Sophos - assessed the making of an MSSP, outlining the blueprint for growth and how partners can differentiate in New Zealand.

The making of an MSSP: a blueprint for growth in NZ
Reseller News Platinum Club celebrates leading partners in 2018

Reseller News Platinum Club celebrates leading partners in 2018

The leading players of the New Zealand channel came together to celebrate a year of achievement at the inaugural Reseller News Platinum Club lunch in Auckland. Following the Reseller News Innovation Awards, Platinum Club provides a platform to showcase the top performing partners and start-ups of the past 12 months, with more than ​​50 organisations in the spotlight.​​​

Reseller News Platinum Club celebrates leading partners in 2018
Meet the top performing HP partners in NZ

Meet the top performing HP partners in NZ

HP has honoured its leading partners in New Zealand during 2018, following 12 months of growth through the local channel. Unveiled during the fourth running of the ceremony in Auckland, the awards recognise and celebrate excellence, growth, consistency and engagement of standout Kiwi partners.

Meet the top performing HP partners in NZ
Show Comments