""ET TROJAN Win32/Retadup CnC Checkin M1""

SID: 2027077

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_03_13, deployment Perimeter, malware_family Retadup, performance_impact Low, signature_severity Major, updated_at 2019_03_13

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "GET" Depth: 3

  • Value: "|2f|1|2f|0|2f|0|20|HTTP|2f|"

  • Value: "User-Agent|3a 20|AutoIt|0d|"

  • Value: !"|0d 0a|Referer|3a|"

  • Value: !"|0d 0a|Accept"

Within:

PCRE: "/^GET\x20\/[A-F0-9]{30,60}\/1\/0\/0\x20HTTP/"

Special Options:

  • fast_pattern

source