""ET TROJAN Malicious XSL file download (FTP)""
SID: 2031482
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_01_05, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_01_05
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 21
Flow: established,to_server
Contents:
- Value: "RETR|20|/frog/usoprive.xsl"
Within:
PCRE:
Special Options:
- fast_pattern