""ET TROJAN AgentTesla Communicating with CnC Server""

SID: 2034579

Revision: 4

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_10_10, deployment Perimeter, malware_family AgentTesla, performance_impact Low, signature_severity Major, updated_at 2023_05_30, reviewed_at 2023_12_13

Reference:

  • md5

  • 274ff72c29b0711d01254c95770ca193

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: ".php"

  • Value: "p=" Depth: 2

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded"

  • Value: !"Accept"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^p=(?:[A-Za-z0-9%+\/]{4,6})*(?:[A-Za-z0-9%+\/]{2}==|[A-Za-z0-9%+\/]{3}=)?$/P"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

  • http_header

source