Rule History

SID: 2023503 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 3 • Nov 14, 2016, 12:00 PM

Message:

ET MALWARE XRatLocker/AiraCrop Ransomware Payment Domain

Rule:

alert dns $HOME_NET any -> any any (msg:"ET MALWARE XRatLocker/AiraCrop Ransomware Payment Domain"; dns_query; content:"6kaqkavhpu5dln6x"; depth:16; nocase; fast_pattern; reference:url,twitter.com/PolarToffee/status/796079699478900736; classtype:trojan-activity; sid:2023503; rev:3; metadata:attack_target Client_Endpoint, created_at 2016_11_14, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_30, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)

Created:

Nov 14, 2016, 12:00 PM

Updated:

Aug 30, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Nov 3, 2025, 10:34 PM

Filename:

rules/emerging-malware.rules