""ET TROJAN Win32/VB.PNU CnC Checkin""

SID: 2039797

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_16, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_11_16, reviewed_at 2024_08_19

Reference:

  • md5

  • 16a9b1b712879d2472f3e5625d9b3f2f

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "|2f|tj2|2f|count|2e|asp|3f|ver|3d|2|2e|0|26|mac|3d|" Depth: 27

Within:

PCRE: "/^Accept\x3a\x20[^\r\n]+\r\nAccept-Encoding\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+[\r\n]+$/H"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

source