""ET CURRENT_EVENTS [Fireeye] Backdoor.DNS.BEACON.[CSBundle DNS]""
SID: 2031265
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_08, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_12_08, 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: any
Source Port: 53
Destination Network: any
Destination Port: any
Flow:
Contents:
-
Value: "|00 01 00 01|" Depth: 4 Offset: 4
-
Value: "|03|"
-
Value: "|0a|_domainkey"
-
Value: "|00 00 10 00 01 c0 0c 00 10 00 01 00 00 00 02 01 00 ff|v=DKIM1\
Within: 11
PCRE:
Special Options:
-
p="
-
fast_pattern