SID: 2033863

Revision: 2

Class Type: bad-unknown

Metadata: attack_target Client_Endpoint, created_at 2021_09_01, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2021_09_01, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

  • md5

  • 69bec32d50744293e85606a5e8f80425

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: "|11|lockbit-decryptor|03|top|00|"

Within: 23

PCRE:

Special Options:

  • nocase

  • fast_pattern

source