Many ransomware gangs have attempted and failed to quake the cybersecurity landscape. But some have broken through and even rearranged it with their obfuscatory cyberattack methods.
Netwalker ransomware is an example of such a success.
What is Netwalker Ransomware?
Netwalker ransomware is a Window’s specific ransomware that encrypts and exfiltrates all of the data it beaches. After a successful attack, victims are presented with a ransom note demanding a bitcoin payment in exchange for a full decryption of the compromised data.
The secret behind Netwalker’s ransom payout success lies in their double-extortion tactic, a strategy also used by the notorious ransomware gang maze .A sample of the breached sensitive data is instantly published on the dark web as proof of the breach. Victims are presented with this evidence and given an ultimatum to pay the ransom price to avoid further publishing on the criminal infested network.
How Does Netwalker Ransomware Work?
Netwalker Ransomware spreads mainly through phishing e-mails, e-mails coming from a charming, reliable source, as in the other Ransomware. Generally, these e-mails include an external link and give access to the attackers when the receiver clicks on this link.
Circus Spider started recruiting experienced network intruders to single out big targets such as private businesses, hospitals, or governmental agencies, rather than individual home users. Attackers gained unauthorized access to the networks of larger organizations by manipulating unpatched VPN appliances, weak Remote Desktop Protocol passwords, or exposed spots in web applications.
After acquiring unlawful entry, Netwalker ransomware then terminates all processes and services running with Windows, encrypts the files on the disk, and deletes backups that are stored in the same network. As a consequence, everything stored on the devices in the victim network is rendered inaccessible.
Attackers gain access to sensitive data, which they then use to blackmail victims into paying a ransom in exchange for their private files to remain private and not be leaked online.
How to Protect Yourself from this Ransomware?
- Keep your Software up to date
- Use external hard drives instead of computer
- Update your passwords
- Use two-factor authentication
- Use anti-virus, anti-malware Software
- Only connect secure networks