""ET TROJAN Likely Koobface Beaconing (getexe)""

SID: 2010700

Revision: 5

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag c2, updated_at 2010_10_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

• Value: "GET"

• Value: "?getexe="

• Value: ".exe"

Within:

PCRE:

Special Options:

• nocase

• http_method

• http_uri

• http_uri

source