Malware authors and operators are increasingly using Secure Sockets Layer (SSL) encryption to hide their communications and escape detection, with the use of SSL for malware communications doubling in the first six months of 2017, security-in-the-cloud firm Zscaler said in its latest threat report.
On average, the company has seen 600,000 encrypted malicious activities every day, including calling back to command-and-control servers, phishing attempts and malware delivery. About 60 percent of the malicious activities were related to banking Trojans and a quarter related to ransomware, the Zscaler analysis stated.
I think we are heading in the direction where SSL will become [a de-facto measure taken by attackers], because it provides an additional layer of security for them to cover the C&C communications, Deepen Desai, senior director of research for Zscaler, told eWEEK.
Even today, they will not do command-and-control over plain text; they will use custom encryption. SSL just adds another layer on top it.
The company found that as many as a quarter of all new malware executables analyzed in its cloud sandbox communicated over SSL and transport layer security (TLS) in 2017.
Malware authors have always found different ways to hide their programs communications, such as using the TOR network or going through covert channels using DNS queries. Yet, SSL is a Web standard and so is very common on corporate networks. In 2016, security firm Blue Coat found that malicious SSL activity jumped by a factor of 58.
Exploit kits, malware, adware and C&C communications have all been observed using SSL encryption to hide the content of the communications. More than 300 Web exploits per day use SSL as part of their infection chain, the company said.
Zscaler and Blue Coat are not the only companies to see the increasing obfuscation of communications by attackers. On Aug. 3, security firm Kaspersky Lab published an analysis of current trends in steganography, a communications technique that embeds messages or data in other trafficmost often, images.
The company stated that steganography has become popular with the developers of malware and spyware, but that most anti-malware tools have trouble detecting the payloads.
So far, the security industry hasnt found a way to reliably detect the data exfiltration conducted in this way and the goal of our investigations is to draw industry attention to the problem and enforce the development of reliable yet affordable technologies, allowing the identification of steganography in malware attacks, Alexey Shulmin, security researcher at Kaspersky Lab, said in a statement.
Zscaler warned companies that the increase in SSL encryption should prompt firms to focus on inspecting SSL traffic.
The company also noted other trends in its threat report, including the increase in network-connected devices in the enterprise. Such devices connected to the so-called Internet of Things are often vulnerable to attack. The most common IoT devices are focused on entertainment, comprising 30 percent of all devices detected, security (27 percent) and health (13 percent).
- Transparent Data Encryption (TDE) - msdn.microsoft.com - April 12th, 2018
- Encryption Software Market - Global Forecast to 2022 - March 24th, 2018
- What AES Encryption Is And How It's Used To Secure File Transfers - March 24th, 2018
- Encryption vs. Cryptography - What is the Difference? - March 24th, 2018
- Energy-efficient encryption for the internet of things | MIT News - February 16th, 2018
- The Best Encryption Software - TopTenReviews - February 16th, 2018
- File-Based Encryption | Android Open Source Project - February 7th, 2018
- Beyond Encryption | Secure Enterprise email using existing ... - February 1st, 2018
- Azure Search enterprise security: Data encryption and user ... - January 26th, 2018
- Skype finally getting end-to-end encryption | Ars Technica - January 13th, 2018
- FBI chief says phone encryption is a 'major public safety issue' - January 13th, 2018
- Encryption and Export Administration Regulations (EAR) - December 27th, 2017
- Key (cryptography) - Wikipedia - December 21st, 2017
- security - Fundamental difference between Hashing and ... - December 15th, 2017
- What Is Encryption? | Surveillance Self-Defense - December 4th, 2017
- Comodo Disk Encryption Download - softpedia.com - December 1st, 2017
- Encryption - Simple English Wikipedia, the free encyclopedia - November 24th, 2017
- BitLocker Drive Encryption Overview - technet.microsoft.com - November 23rd, 2017
- The Encrypting File System - technet.microsoft.com - November 18th, 2017
- FBI cant break the encryption on Texas shooters smartphone - November 13th, 2017
- DOJ: Strong encryption that we dont have access to is ... - November 13th, 2017
- DOJ Fires Up New War With Apple Over Encryption - November 12th, 2017
- Security Awareness - Encryption | Office of Information ... - October 15th, 2017
- Data Encryption and Decryption (Windows) - October 14th, 2017
- Trumps DOJ tries to rebrand weakened encryption as responsible ... - October 11th, 2017
- How to encrypt (almost) anything | PCWorld - September 22nd, 2017
- Private Internet Access | VPN Encryption - September 21st, 2017
- Encryption Substitutes | Privacy | Encryption - September 21st, 2017
- Data Encryption: Hardware & Software Security: Online ... - September 21st, 2017
- How To Enable BitLocker Drive Encryption In Windows 10? - September 21st, 2017
- PGP Encryption Tool - iGolder - September 21st, 2017
- encryption - How to encrypt String in Java - Stack Overflow - September 21st, 2017
- Encryption Software Market, Size, Trends and Forecast 2020 - September 21st, 2017
- Encryption Definition - Tech Terms - September 20th, 2017
- Why You Should Be Encrypting Your Devices and How to Easily Do It - Gizmodo - September 6th, 2017
- Black Hats, White Hats, and Hard Hats The Need for Encryption in Mining and Resources - Australian Mining - September 6th, 2017
- How can enterprises secure encrypted traffic from cloud applications? - TechTarget - September 6th, 2017
- Encryption Explained - Arizona Daily Wildcat - September 6th, 2017
- News in brief: Call to link encryption to ID; Facebook maps everyone ... - Naked Security - September 2nd, 2017
- 'Independent' gov law reviewer wants users preemptively identified before they're 'allowed' to use encryption - The Register - September 2nd, 2017
- High-Dimensional Quantum Encryption Performed in Real-World ... - Futurism - September 2nd, 2017
- It's Time to Replace Your Encryption-Key Spreadsheet - Data Center Knowledge - September 2nd, 2017
- Legislation to limit smartphone encryption 'may be necessary,' deputy AG Rosenstein says - Washington Times - August 31st, 2017
- Cloud Encryption Market by Component, Service Model, Organization Size, Vertical And Region - Global Forecast to ... - Markets Insider - August 31st, 2017
- Cipher Suites: Ciphers, Algorithms and Negotiating Security Settings - Hashed Out by The SSL Store (registration) (blog) - August 31st, 2017
- Encryption in Office 365 - Office 365 - August 29th, 2017
- Need-to-Know Only: Use Encryption to Make Data Meaningless to ... - Security Intelligence (blog) - August 29th, 2017
- Four strategies to prevent data encryption from hijacking your network - Digital News Asia - August 29th, 2017
- Amber Rudd is wrong - real people do want end-to-end encryption - ITProPortal - August 29th, 2017
- Why encryption is for everyone - IFEX - August 29th, 2017
- 4D quantum encryption successful in first real-world test - New Atlas - New Atlas - August 29th, 2017
- For the First Time Ever, Quantum Communication is Demonstrated in Real-World City Conditions - Futurism - August 26th, 2017
- High-Dimensional Quantum Encryption Takes Place in Real-World ... - Photonics.com - August 26th, 2017
- Hedvig Bakes Encryption into Software-Defined Storage Platform - IT Business Edge (blog) - August 26th, 2017
- Hedvig storage upgrade adds flash tier, encryption options - TechTarget - August 26th, 2017
- How to use EFS encryption to encrypt individual files and folders on Windows 10 - Windows Central - August 26th, 2017
- Cloud Encryption Market Worth 2401.9 Million USD by 2022 - Markets Insider - August 23rd, 2017
- To Protect Genetic Privacy, Encrypt Your DNA - WIRED - August 23rd, 2017
- Data Encryption in OneDrive for Business and SharePoint Online - August 21st, 2017
- Researchers use encryption to keep patients' DNA private - Engadget - August 21st, 2017
- Additional proof that Lancaster County Commissioners should reconsider encrypting police transmissions - LancasterOnline - August 21st, 2017
- iPhone Secure Enclave firmware encryption key leaked - TechTarget - August 21st, 2017
- Encryption, speed push the modern mainframe into the future - TechTarget - August 21st, 2017
- Hardware encryption vs software encryption: the simple guide - Kroll Ontrack UK (press release) (blog) - August 21st, 2017
- Encryption Technology Could Protect the Privacy of Your DNA - Gizmodo - August 21st, 2017
- Beginner's guide to Windows 10 encryption - Windows Central - August 18th, 2017
- Encryption key for iPhone 5s Touch ID exposed, opens door to further research - AppleInsider (press release) (blog) - August 18th, 2017
- How security pros look at encryption backdoors - Help Net Security - August 18th, 2017
- The Laws of Mathematics and the Laws of Nations: The Encryption Debate Revisited - Lawfare (blog) - August 18th, 2017
- 72 percent of security pros say encryption backdoors won't stop terrorism - BetaNews - August 18th, 2017
- Ex-MI5 Boss Evans: Don't Undermine Encryption - Infosecurity Magazine - August 14th, 2017
- Despite end to end encryption, apps like WhatsApp, Messenger are still vulnerable to hacking: Study - Firstpost - August 13th, 2017
- What is Encryption? (with pictures) - wiseGEEK - August 12th, 2017
- Ex-MI5 chief warns against crackdown on encrypted messaging ... - The Guardian - August 12th, 2017
- Former UK security service head says weakening encryption would be too dangerous - 9to5Mac - August 12th, 2017
- News in brief: facial recognition planned for Carnival; spy chief backs encryption; ginger emoji planned - Naked Security - August 12th, 2017
- Avoid getting lost in encryption with these easy steps - We Live Security (blog) - August 12th, 2017
- Here's why IBM Z Mainframe Wants to Encrypt the World - Edgy Labs (blog) - August 10th, 2017
- Symantec Announces Plesk Will Integrate Symantec Encryption Everywhere Security Into Its Website Management ... - Business Wire (press release) - August 10th, 2017
- Australia: Shelve Proposed Law to Weaken Encryption - Human Rights Watch (press release) - August 6th, 2017