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A new ransomware tool called AgeLocker has been observed making use of the Age open-source CLI tool for encryption.
Affected platformsThe following platforms are known to be affected:
- Microsoft Windows Versions: all
If a device on your network becomes infected with ransomware it will begin encrypting files, which may also include remote files on network locations. The only guaranteed way to recover from a ransomware infection is to restore all affected files from their most recent backup.
To prevent and detect an infection, NHS Digital advises that:
- Secure configurations are applied to all devices.
- Security updates are applied at the earliest opportunity.
- Tamper protection settings in security products are enabled where available.
- Obsolete platforms are segregated from the rest of the network.
- IT usage policies are reinforced by regular training to ensure all users know not to open unsolicited links or attachments.
- Multi-factor authentication (MFA) and lockout policies are used where practicable, especially for administrative accounts.
- Administrative accounts are only used for necessary purposes.
- Remote administration services use strongly encrypted protocols and only accept connections from authorised users or locations.
- Systems are continuously monitored, and unusual activity is investigated, so that a compromise of the network can be detected as early as possible.
Please note that NCSC maintains guidance for securely configuring a wide range of end user device (EUD) platforms. For further details refer to their end user device security guidance pages.
To limit the impact of a ransomware infection, NHS Digital advises that:
- Critical data is frequently saved in multiple backup locations.
- At least one backup is kept offline at any time (separated from live systems).
- Backups and incident recovery plans are tested to ensure that data can be restored when needed.
- User account permissions for modifying data are regularly reviewed and restricted to the minimum necessary.
- Infected systems are disconnected from the network and powered down as soon as practicable.
- Any user account credentials that may have been compromised should be reset on a clean device
- Where infected systems cannot be quarantined with confidence, then an affected organisation should disconnect from national networks to limit propagation.