""ET TROJAN Cryptbot CnC DGA Domain (fifteen15)""

SID: 2054396

Revision: 1

Class Type: trojan-activity

Metadata: tls_state plaintext, created_at 2024_07_08, deployment Perimeter, malware_family Cryptbot, signature_severity Major, updated_at 2024_07_08

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: "fifteen15"

Within: 7

PCRE: "/(?:[a-z]{2})fifteen15(?:[a-z]{2})\x03top/"

Special Options:

  • fast_pattern

  • nocase

source