""ET SCAN Multiple FTP Administrator Login Attempts from Single Source - Possible Brute Force Attempt""
SID: 2010643
Revision: 3
Class Type: attempted-recon
Metadata: created_at 2010_07_30, updated_at 2010_07_30
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: any
Destination Network: $HOME_NET
Destination Port: 21
Flow: established,to_server
Contents:
-
Value: "USER " Depth: 5
-
Value: "administrator"
Within: 25
PCRE:
Special Options:
-
nocase
-
nocase