""ET TROJAN Win32/Ursnif Checkin""
SID: 2019377
Revision: 4
Class Type: trojan-activity
Metadata: created_at 2014_10_09, updated_at 2015_04_03
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "POST"
-
Value: "|0d 0a|Content-Length|3a 20|2|0d 0a|Connection|3a 20|"
-
Value: !"Referer|3a|"
-
Value: "no-cache|0d 0a 0d 0a 0d 0a|"
Within:
PCRE: "/^(?:\/\w{3,12}){2,4}\?[a-z]{3,12}=(?:[A-Za-z0-9+/\x20]{4})*(?:[A-Za-z0-9+/\x20]{2}==|[A-Za-z0-9+/\x20]{3}=|[A-Za-z0-9+/\x20]{4})$/U"
Special Options:
-
http_method
-
http_header
-
http_header