""ET ATTACK_RESPONSE PowerShell Execution String Base64 Encoded New-Object (ctT2J) in DNS TXT Response""
SID: 2026921
Revision: 5
Class Type: bad-unknown
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_02_19, deployment Perimeter, malware_family DNSlivery, signature_severity Major, updated_at 2023_01_24
Reference:
Protocol: udp
Source Network: any
Source Port: 53
Destination Network: $HOME_NET
Destination Port: any
Flow:
Contents:
-
Value: "|00 00 10 00 01 c0 0c 00 10 00 01|"
-
Value: "ctT2J"
-
Value: !"v=DKIM"
Within:
PCRE:
Special Options:
- fast_pattern