Sophos Resources to Stop Ransomware
Ransomware keeps evolving, getting faster, smarter – and costlier – at every turn.
With a full-scale ransomware attack costing on average an eye-watering US$1,852,872* it’s essential to know what you’re up against – and how to stay protected.
Train Your Organization
Many ransomware attacks start with a malicious email. Attackers know it only takes one individual to let down their guide for them to get into your organization.
Our anti-ransomware educational toolkit for IT managers gives you free resources to train your users on ransomware, including an organizational checklist, security awareness posters, and an educational video for employees.
How Does Ransomware Work?
Many ransomware attacks start with a malicious email as part of a targeted phishing scam. Cybercriminals know it only takes one individual at a company to let down their guard for them to gain access to your organization’s data and systems. To have a fighting chance, you need a ransomware mitigation strategy.
Cybercriminals use ransomware to orchestrate attacks on businesses and consumers 24/7/365. Ransomware attacks usually start with a malicious email as part of a targeted phishing scam. Ransomware mitigation leverages insights and intelligence, appropriate security policies, and company-wide protection technologies.
For most organizations, managing all of this alone is overwhelming and expensive. Managed detection and response (MDR) offers a comprehensive, cost-effective approach to ransomware mitigation.
What is Ransomware Mitigation?
Ransomware mitigation involves a series of best practices and tools that focus on each of these aspects.
About Ransomware Mitigation
Smart companies develop and deploy multiple layers of ransomware mitigation that encompass prevention, detection, and response. Ransomware mitigation involves a series of best practices and tools that focus on each of these aspects. For example, prevention may involve deploying multifactor authorization (MFA) and regular backup of data. Prevention also includes providing regular employee training to help users recognize the signs of a phishing attack that may be linked to ransomware. Detection focuses on monitoring for any signs of suspicious behavior linked to ransomware. The best ransomware detection leverages endpoint detection and response (EDR) or managed detection and response (MDR), as well as extended detection and response (XDR). And finally, response to a ransomware attack involves incident investigation and forensics, as well as sophisticated threat hunting to get the most value out of your ransomware mitigation efforts.
Can Ransomware Be Detected?
The average user may not detect a ransomware attack on their systems until it’s too late.
The average user may not detect a ransomware attack on their systems until it’s too late. However, trained security professionals with the right detection and response tools can often spot unusual activity that may indicate a ransomware attack is imminent. There are a few different techniques security professionals use to detect ransomware attacks. They involve a mix of automation and human investigation and analysis to discover malicious files early. An example of automation is signature-based ransomware detection, which compares a ransomware sample hash to known signatures. Endpoint detection and response platforms and Next Generation Antivirus software can work together to monitor, capture and analyze data extracted from an executable file to determine whether it’s ransomware. Most antivirus software takes this step in a scan for malicious software. Behavior-based ransomware detection is more in-depth. Experienced security analysts know that ransomware’s behavior is its Achilles' heel, which is why professionals in a Security Operations Center (SOC) spend so much time studying it. Security professionals use their expertise along with robust tools to compare recent behaviors within the network or systems against average behavioral baselines. For example, has an employee accessed a desktop machine remotely from another state, when the employee has been logged in from the office all day? Security teams can examine traffic patterns for any anomalies and further investigate anything that appears suspicious.
MDR for Remediation
With MDR, your company’s data and systems are backed by a team of experienced threat hunters, engineers, ethical hackers, and security operations specialists.
Ransomware Remediation with MDR
An MDR provider delivers around-the-clock security monitoring across its IT environment. It also ensures that a company can proactively hunt for ransomware and other cyber threats and protect against them. With MDR, your company’s data and systems are backed by a team of experienced threat hunters, engineers, ethical hackers, and security operations specialists. Together, these cybersecurity professionals search far and wide for cyber threats like ransomware. If any threats are identified, they are resolved right away. The threats are also evaluated, ensuring a company can protect against such issues moving forward.
New ransomware variants are created and released every day. The only way to mitigate harm is to detect and block ransomware before it can take root. The result is a continuous struggle between defenders, with their security controls and detection systems finely tuned to spot suspicious code and behavior, and adversaries, with their ever-evolving bag of tricks designed to outfox these controls – or to get the job done before the controls catch up with them.
See how Sophos technologies work together to disrupt multiple stages of a Ryuk ransomware attack:
Apply Best Practices at All Times
Follow these top tips to minimize your risk of attack:
- Use multi-factor authentication (MFA)
- Use complex passwords, managed through a password manager
- Limit access rights; give user accounts and administrators only the access rights they need and nothing more
- Make regular backups, and keep them offsite and offline where attackers can’t find
- Patch early and patch often. Ransomware like WannaCry and NotPetya relied on unpatched vulnerabilities to spread around the globe
- Lock down your RDP. Turn off RDP if you don’t need it, and use rate limiting, 2FA, or a VPN if you do
- Ensure tamper protection is enabled – Ryuk and other ransomware strains attempt to disable your endpoint protection
* The State of Ransomware 2021, Sophos