""ET TROJAN Win32/DarkCloud Variant Exfil over SMTP (FirefoxCookies.json)""

SID: 2044137

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_02_06

Reference:

  • md5

  • 1d9be2dfd54bf4a986c6cd1b7b630750

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 587

Flow: established,to_server

Contents:

  • Value: "Subject|3a 20|DC-FirefoxCookies.json|3a 3a 3a|"

  • Value: "Content-Type|3a 20|application/json|3b 0d 0a|"

  • Value: "name|3d 22|FirefoxCookies.json|22 0d 0a|"

  • Value: "Content-Transfer-Encoding|3a 20|quoted-printable|0d 0a|"

  • Value: "Content-Disposition|3a 20|attachment|3b 0d 0a|"

  • Value: "filename|3d 22|FirefoxCookies.json|22 0d 0a 0d 0a|"

Within:

PCRE:

Special Options:

source