""ET TROJAN FrameworkPOS Covert DNS CnC Beacon 2""
SID: 2019455
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2014_10_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_08_28, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel
Reference:
Protocol: udp
Source Network: $HOME_NET
Source Port: any
Destination Network: any
Destination Port: 53
Flow:
Contents:
-
Value: "|01|" Depth: 1 Offset: 2
-
Value: "|00 01 00 00 00 00 00|"
-
Value: "dc978a97"
-
Value: "|05|alert"
Offset: 12
Within: 7
PCRE: "/^\x08-\xFF*?dc978a97/Ri"
Special Options:
-
nocase
-
nocase
-
fast_pattern