About Anti-Cryptor task
January 20, 2022
ID 161330
The Anti-Cryptor task allows you to protect your files in the local directories with network access by SMB/NFS protocols from remote malicious encrypting.
While the Anti-Cryptor task is running, Kaspersky Endpoint Security scans remote computers' calls to access files located in the shared network directories of the protected device. If the application considers a remote computer's actions on network file resources to be malicious encrypting, then this computer is added to a list of untrusted hosts and loses access to the shared network directories.
Kaspersky Endpoint Security does not consider activity to be malicious encrypting if the detected encryption activity takes place in directories excluded from the scope of the Anti-Cryptor task.
By default, Kaspersky Endpoint Security blocks untrusted hosts' access to network file resources for 30 minutes.
For the Anti-Cryptor task to perform correctly, at least one of the services (Samba or NFS) must be installed on the operating system. For the NFS service, the rpcbind package must be installed.
The Anti-Cryptor task runs correctly with SMB1, SMB2, SMB3, NFS3, TCP/UDP, and IP/IPv6 protocols. Working with NFS2 and NFS4 protocols is not supported. We recommend to configure your server settings so that NFS2 and NFS4 protocols could not be used to mount resources.
The Anti-Cryptor task does not block access to network file resources until the host's activity is identified as malicious. So at least one file will be encrypted before the application detects a malicious activity.
