""ET TROJAN W32/Farfli.BHQ!tr Dropper CnC Beacon 2""
SID: 2020913
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2015_04_15, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_04_15, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel
Reference:
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md5
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93be88ad3816c19d74155f8cd3aae1d2
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: !80
Flow: established,to_server
Contents:
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Value: "GET /do.asp?search=" Depth: 19
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Value: "|20|HTTP/1."
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Value: !"Referer|3a|"
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Value: "Host|3a 20|"
Within:
PCRE: "/^\d{1,3}\x2E\d{1,3}\x2E\d{1,3}\x2E\d{1,3}\x3A\d{1,5}\r?$/Rmi"
Special Options: