""ET ATTACK_RESPONSE PowerShell String Base64 Encoded Invoke-RestMethod (dm9rZS1SZXN0TWV0) in DNS TXT Reponse""
SID: 2043161
Revision: 2
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2023_01_03, deployment Perimeter, performance_impact Low, 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: !"v=DKIM"
-
Value: "|00 00 10 00 01 c0 0c 00 10 00 01|"
-
Value: "dm9rZS1SZXN0TWV0"
Within:
PCRE:
Special Options:
- fast_pattern