Rule History

SID: 2026924 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 5 • Feb 19, 2019, 12:00 PM

Message:

ET ATTACK_RESPONSE PowerShell Execution String Base64 Encoded New-Object (XctT2JqZW) in DNS TXT Reponse

Rule:

alert dns any any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE PowerShell Execution String Base64 Encoded New-Object (XctT2JqZW) in DNS TXT Reponse"; content:!"v=DKIM"; content:"|00 00 10 00 01 c0 0c 00 10 00 01|"; content:"XctT2JqZW"; fast_pattern; distance:0; reference:url,github.com/no0be/DNSlivery; classtype:bad-unknown; sid:2026924; rev:5; 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, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_12;)

Created:

Feb 19, 2019, 12:00 PM

Updated:

Dec 12, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 25, 2025, 9:34 PM

Filename:

rules/emerging-attack_response.rules