""ET TROJAN AHK/BKDR_HTV.ZKGD-A Fake HTTP 500 Containing Encoded Commands Inbound""
SID: 2027156
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_04, deployment Perimeter, malware_family BKDR_HTV_ZKGD_A, performance_impact Low, signature_severity Major, updated_at 2019_04_04
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "charset=UTF-8"
-
Value: "500"
-
Value: "500|20|Internal|20|Server|20|Error|3c 21 2d 2d|"
Within:
PCRE: "/^[A-F0-9]+\x2d\x2d\x3e(?:\r\n)?$/R"
Special Options:
-
http_header
-
http_stat_code
-
file_data