""ET TROJAN Observed TA444 Domain in TLS SNI (docsend .linkpc .net)""
SID: 2046708
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2023_06_28, deployment Perimeter, signature_severity Major, tag SSL_Malicious_Cert, tag TA444, updated_at 2023_06_30, former_sid 2854711
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|"
-
Value: "|01|"
-
Value: "|00 00|"
-
Value: "|00|"
-
Value: "docsend.linkpc.net"
Within: 1
PCRE: "/^(?:\x00\x12|.\x2e)docsend.linkpc.net/R"
Special Options: