""ET TROJAN Send-Safe Bulk Mailer SSL Cert - Observed in Spam Campaigns""

SID: 2022194

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_11_30, deployment Perimeter, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2022_03_23

Reference:

  • md5

  • 837c7af7f376722a0315cb0a7cb12399

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|16|"

  • Value: "|0b|"

  • Value: "|06 03 55 04 06|"

  • Value: "|07|Unknown"

  • Value: "|06 03 55 04 08|"

  • Value: "|07|Unknown"

  • Value: "|06 03 55 04 07|"

  • Value: "|07|Unknown"

  • Value: "|06 03 55 04 0a|"

  • Value: "|09|Send-Safe"

  • Value: "|06 03 55 04 0b|"

  • Value: "|07|Unknown"

  • Value: "|06 03 55 04 03|"

  • Value: "|09|Send-Safe"

Within: 10

PCRE:

Special Options:

  • fast_pattern

source