Is there a documentation or patches that fixes the vulnerability?
Common vulnerabilities exploited by actors using Netwalker are Pulse Secure VPN
(CVE-2019-11510) and Telerik UI (CVE-2019-18935)
CVE-2019-11510 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11510
In Pulse Secure Pulse Connect Secure (PCS) 8.2 before 8.2R12.1, 8.3 before 8.3R7.1, and 9.0 before 9.0R3.4, an unauthenticated remote attacker can send a specially crafted URI to perform an arbitrary file reading vulnerability.
Pulse Connect Secure 9.0R3.4 & 9.0R4 & above is having fix for the reported vulnerability.