""ET MALWARE W32/RocketfuelNextUp.Adware CnC Beacon""

SID: 2018565

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2014_06_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_08_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 408e8969cd0abd153eab6696f8add363

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: "/evt/?nexcb="

  • Value: !"User-Agent|3A|"

  • Value: "a=" Depth: 2

  • Value: "&b="

Within:

PCRE: "/^\x2Fevt\x2F\x3Fnexcb\x3D[a-f0-9\x2D]{10,}$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

source