""ET FTP Suspicious Percentage Symbol Usage in FTP Username""
SID: 2011487
Revision: 2
Class Type: bad-unknown
Metadata: created_at 2010_09_29, updated_at 2012_03_12
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: !"|0d 0a|"
-
Value: "%"
Within: 50
PCRE:
Special Options:
- nocase