""ET TROJAN Anchor_DNS stickseed Variant CnC Checkin""
SID: 2033420
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2021_07_26, signature_severity Major, updated_at 2021_07_26, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol
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: "efkezwpdxpsq3l"
Within: 7
PCRE: "/.[dghbcijklmnfqrwxyz23stuopaev4569]{26}.[a-z0-9_-]{1,50}.[a-z]{2,8}\x00/"
Special Options:
- fast_pattern