""ET TROJAN Observed GandCrab Ransomware CnC/IP Check Domain (gdcb .bit in DNS Lookup)""
SID: 2025407
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_03_05, deployment Perimeter, malware_family GandCrab, signature_severity Major, tag Ransomware, updated_at 2018_03_05, 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: "|04|gdcb|03|bit|00|"
Within: 7
PCRE:
Special Options:
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nocase
-
fast_pattern