""ET TROJAN Win32/Lumma Stealer Data Exfiltration Attempt M2""

SID: 2043206

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 2023_01_04, deployment Perimeter, malware_family lumma, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_02_03

Reference:

  • md5

  • b3b025b8445dcbd9b7aca560ad752b74

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/c2sock" Depth: 7

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|file|22 0d 0a|Content-Type|3a 20|attachment/x-object|0d 0a 0d 0a|PK"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d 22|hwid|22 0d 0a 0d 0a 7b|"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d 22|pid|22|"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d 22|lid|22|"

Within:

PCRE: "/^Content-Disposition\x3a\x20|form-data\x3b\x20name\x3d\x22hwid\x22\x0d\x0a\x0d\x0a\x7b[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\x7d/Pm"

Special Options:

  • http_method

  • http_uri

  • nocase

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

source