""ET TROJAN HTTPRevShell Initial CnC Checkin""

SID: 2038611

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_08_24, deployment Perimeter, malware_family HTTPRevShell, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_08_24

Reference:

  • md5

  • b77f17c914ba3af3bce2d98beb6cc4c6

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST /" Depth: 6

  • Value: "username="

  • Value: "computername="

  • Value: "processname="

  • Value: "processid="

  • Value: "arch="

  • Value: "cwd="

  • Value: "internalip="

  • Value: !"User-Agent|3a 20|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^[a-zA-Z0-9]{32}/R"

Special Options:

  • fast_pattern

source