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memory-gateway/obsidian-vault/02_Cases/phishing/CASE-2026-0002 - Payroll notification email flagged but determined benign.md

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case_id, scenario, alert_type, severity, verdict, source, openviking_enriched
case_id scenario alert_type severity verdict source openviking_enriched
CASE-2026-0002 phishing mail_suspicious_link medium false_positive soc-memory-poc true

CASE-2026-0002 Payroll notification email flagged but determined benign

基本信息

  • Case ID: CASE-2026-0002
  • 标题: Payroll notification email flagged but determined benign
  • 告警类型: mail_suspicious_link
  • 来源系统: SOC Memory POC Mock Dataset
  • 时间范围: 待补充
  • 研判人 / Agent: AI Agent Draft
  • 最终结论: 误报
  • 严重等级: medium

告警摘要

Payroll update email was flagged due to a shortened URL, but the destination was the approved HR vendor portal.

关键实体

关键证据

  • Sender domain aligned with SPF and DKIM.
  • Destination domain matched approved supplier inventory.
  • No credential prompt anomaly observed.

研判过程摘要

  1. 确认告警场景与核心风险Payroll update email was flagged due to a shortened URL, but the destination was the approved HR vendor portal.
  2. 提取关键证据并交叉验证Sender domain aligned with SPF and DKIM.
  3. 对照关联 playbook / KB 复核告警模式与处置路径。
  4. 基于关键证据与场景模式完成结论判定:误报。

结论依据

  • 结论为误报。
  • 最关键依据Sender domain aligned with SPF and DKIM.
  • 补充依据Destination domain matched approved supplier inventory.

处置建议

  • 记录误报原因,并更新检测例外或抑制条件。

可复用模式

  • 命中模式: scenario:phishing, alert_type:mail_suspicious_link
  • 误报特征: 本案最终确认为误报,可用于补充抑制条件。
  • 需关注的变体: 相关标签phishing, email, false-positive, vendor

关联知识

自动关联推荐

推荐历史 Case

  • CASE-2026-0004 (case score=0.549) This directory contains a structured incident case report related to a phishing attack targeting a shared mailbox via a spoofed OneDrive not...
  • CASE-2026-0001 (case score=0.532) This directory contains a structured case report detailing a high-severity phishing incident targeting a finance user via a malicious invoic...

推荐知识条目

  • PB-PHISH-001 (knowledge score=0.514) This directory contains a phishing email investigation playbook designed to standardize incident response procedures for suspicious emails, ...
  • KB-CRED-HARVEST-PATTERNS (knowledge score=0.494) This directory contains a structured knowledge base artifact focused on identifying and investigating credential harvesting campaigns, parti...

Lessons Learned

  • 本案可沉淀为后续同类告警的快速判定参考。
  • 若后续出现相同 lure、同类登录模式或相同关键证据应优先联想本案与关联知识。

标签

  • #case
  • #scenario/phishing
  • #alert/mail_suspicious_link
  • #verdict/false-positive
  • #phishing
  • #email
  • #false-positive
  • #vendor