""ET MALWARE Ransomware Decryptor Domain in DNS Query (decryptor .top)""
SID: 2033201
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_06_29, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2023_04_19, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact
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: "|09|decryptor|03|top"
Within: 7
PCRE:
Special Options:
- nocase