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Initial SOC memory POC implementation

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obsidian-vault/02_Cases/o365_suspicious_login/CASE-2026-1001 - Impossible travel login followed by MFA prompt fatigue.md Normal file
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---
case_id: CASE-2026-1001
scenario: o365_suspicious_login
alert_type: azuread_impossible_travel
severity: high
verdict: true_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-1001 Impossible travel login followed by MFA prompt fatigue
## 基本信息
- Case ID: CASE-2026-1001
- 标题: Impossible travel login followed by MFA prompt fatigue
- 告警类型: azuread_impossible_travel
- 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: 真报
- 严重等级: high
## 告警摘要
User account showed impossible travel between Shanghai and Amsterdam, followed by repeated MFA prompts and successful sign-in.
## 关键实体
- 用户: david@corp.example
- 主机: WS-DAVID-01
- 邮箱: david@corp.example
- IP: 203.0.113.150, 198.51.100.61
- 域名: 无
- 文件 Hash: 无
- 其他 IOC: 无
## 关键证据
- Two successful sign-ins from geographically impossible locations within 15 minutes.
- MFA challenge volume increased abnormally before final success.
- User confirmed they did not initiate overseas login.
## 研判过程摘要
1. 确认告警场景与核心风险：User account showed impossible travel between Shanghai and Amsterdam, followed by repeated MFA prompts and successful sign-in.
2. 提取关键证据并交叉验证：Two successful sign-ins from geographically impossible locations within 15 minutes.
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：真报。
## 结论依据
- 结论为真报。
- 最关键依据：Two successful sign-ins from geographically impossible locations within 15 minutes.
- 补充依据：MFA challenge volume increased abnormally before final success.
## 处置建议
- 复核登录来源、MFA 事件和后续邮箱规则或 OAuth 变更。
- 若存在账号接管迹象，立即执行会话失效和凭据重置。
## 可复用模式
- 命中模式: scenario:o365_suspicious_login, alert_type:azuread_impossible_travel
- 误报特征: 无
- 需关注的变体: 相关标签：o365, login, impossible-travel, mfa-fatigue
## 关联知识
- 关联 Playbook: [[PB-O365-LOGIN-001]]
- 关联 KB: [[KB-O365-IMPOSSIBLE-TRAVEL]], [[KB-O365-MFA-FATIGUE]]
- 关联历史 Case: [[CASE-2026-1005]], [[CASE-2026-1004]]
- 关联实体: [[david@corp.example]], [[WS-DAVID-01]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-1005]] (case score=0.687) This directory contains a single case record documenting a false positive alert triggered by Microsoft 365’s impossible travel detection sys...
- [[CASE-2026-1004]] (case score=0.636) This directory contains a single incident case file related to a suspicious Microsoft 365 login attempt, identified as CASE-2026-1004. The c...
### 推荐知识条目
- [[KB-O365-IMPOSSIBLE-TRAVEL]] (knowledge score=0.69) This directory contains a knowledge base artifact focused on analyzing and validating Microsoft 365 impossible travel alerts—security events...
- [[PB-O365-LOGIN-001]] (knowledge score=0.63) This directory contains a security playbook focused on detecting and responding to suspicious Microsoft Entra ID sign-in activities within M...
## 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/o365_suspicious_login
- #alert/azuread_impossible_travel
- #verdict/true-positive
- #o365
- #login
- #impossible-travel
- #mfa-fatigue

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obsidian-vault/02_Cases/o365_suspicious_login/CASE-2026-1002 - Legacy protocol sign-in from unfamiliar IP blocked by policy.md Normal file
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---
case_id: CASE-2026-1002
scenario: o365_suspicious_login
alert_type: azuread_legacy_auth_attempt
severity: medium
verdict: false_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-1002 Legacy protocol sign-in from unfamiliar IP blocked by policy
## 基本信息
- Case ID: CASE-2026-1002
- 标题: Legacy protocol sign-in from unfamiliar IP blocked by policy
- 告警类型: azuread_legacy_auth_attempt
- 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
Legacy authentication attempt from a cloud IP was blocked; investigation tied it to an approved migration tool test.
## 关键实体
- 用户: svc-migration@corp.example
- 主机: 无
- 邮箱: svc-migration@corp.example
- IP: 192.0.2.24
- 域名: 无
- 文件 Hash: 无
- 其他 IOC: 无
## 关键证据
- The account is a known migration service account.
- Source IP matched approved cloud migration vendor range.
- No successful sign-in occurred due to policy block.
## 研判过程摘要
1. 确认告警场景与核心风险：Legacy authentication attempt from a cloud IP was blocked; investigation tied it to an approved migration tool test.
2. 提取关键证据并交叉验证：The account is a known migration service account.
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：The account is a known migration service account.
- 补充依据：Source IP matched approved cloud migration vendor range.
## 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:o365_suspicious_login, alert_type:azuread_legacy_auth_attempt
- 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：o365, login, false-positive, legacy-auth
## 关联知识
- 关联 Playbook: [[PB-O365-LOGIN-001]]
- 关联 KB: [[KB-O365-LEGACY-AUTH]], [[KB-O365-IMPOSSIBLE-TRAVEL]]
- 关联历史 Case: [[CASE-2026-1001]], [[CASE-2026-1004]]
- 关联实体: [[svc-migration@corp.example]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-1001]] (case score=0.651) This directory contains a structured security incident case report related to a high-severity event in an Office 365 environment, identified...
- [[CASE-2026-1004]] (case score=0.634) This directory contains a single incident case file related to a suspicious Microsoft 365 login attempt, identified as CASE-2026-1004. The c...
### 推荐知识条目
- [[KB-O365-IMPOSSIBLE-TRAVEL]] (knowledge score=0.626) This directory contains a knowledge base artifact focused on analyzing and validating Microsoft 365 impossible travel alerts—security events...
- [[PB-O365-LOGIN-001]] (knowledge score=0.61) This directory contains a security playbook focused on detecting and responding to suspicious Microsoft Entra ID sign-in activities within M...
## 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/o365_suspicious_login
- #alert/azuread_legacy_auth_attempt
- #verdict/false-positive
- #o365
- #login
- #false-positive
- #legacy-auth

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obsidian-vault/02_Cases/o365_suspicious_login/CASE-2026-1003 - Suspicious inbox rule creation after successful foreign login.md Normal file
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---
case_id: CASE-2026-1003
scenario: o365_suspicious_login
alert_type: azuread_suspicious_inbox_rule_after_login
severity: high
verdict: true_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-1003 Suspicious inbox rule creation after successful foreign login
## 基本信息
- Case ID: CASE-2026-1003
- 标题: Suspicious inbox rule creation after successful foreign login
- 告警类型: azuread_suspicious_inbox_rule_after_login
- 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: 真报
- 严重等级: high
## 告警摘要
An overseas sign-in to Microsoft 365 was followed by inbox rule creation to hide finance-related emails.
## 关键实体
- 用户: emma@corp.example
- 主机: WS-EMMA-07
- 邮箱: emma@corp.example
- IP: 198.51.100.98
- 域名: 无
- 文件 Hash: 无
- 其他 IOC: 无
## 关键证据
- Successful sign-in from untrusted ASN.
- Inbox rule moved wire transfer emails to RSS Feeds folder.
- Mailbox audit showed rule creation minutes after login.
## 研判过程摘要
1. 确认告警场景与核心风险：An overseas sign-in to Microsoft 365 was followed by inbox rule creation to hide finance-related emails.
2. 提取关键证据并交叉验证：Successful sign-in from untrusted ASN.
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：真报。
## 结论依据
- 结论为真报。
- 最关键依据：Successful sign-in from untrusted ASN.
- 补充依据：Inbox rule moved wire transfer emails to RSS Feeds folder.
## 处置建议
- 复核登录来源、MFA 事件和后续邮箱规则或 OAuth 变更。
- 若存在账号接管迹象，立即执行会话失效和凭据重置。
## 可复用模式
- 命中模式: scenario:o365_suspicious_login, alert_type:azuread_suspicious_inbox_rule_after_login
- 误报特征: 无
- 需关注的变体: 相关标签：o365, login, inbox-rule, account-compromise
## 关联知识
- 关联 Playbook: [[PB-O365-LOGIN-001]]
- 关联 KB: [[KB-O365-INBOX-RULE-ABUSE]], [[KB-O365-IMPOSSIBLE-TRAVEL]]
- 关联历史 Case: [[CASE-2026-1005]], [[CASE-2026-1001]]
- 关联实体: [[emma@corp.example]], [[WS-EMMA-07]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-1005]] (case score=0.667) This directory contains a single case record documenting a false positive alert triggered by Microsoft 365’s impossible travel detection sys...
- [[CASE-2026-1001]] (case score=0.666) This document is a structured case report detailing a high-severity security incident involving suspicious login activity in an Office 365 e...
### 推荐知识条目
- [[PB-O365-LOGIN-001]] (knowledge score=0.653) This directory contains a security playbook focused on detecting and responding to suspicious Microsoft Entra ID sign-in activities within M...
- [[KB-O365-IMPOSSIBLE-TRAVEL]] (knowledge score=0.645) This directory contains a knowledge base artifact focused on analyzing and validating Microsoft 365 impossible travel alerts—security events...
## 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/o365_suspicious_login
- #alert/azuread_suspicious_inbox_rule_after_login
- #verdict/true-positive
- #o365
- #login
- #inbox-rule
- #account-compromise

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obsidian-vault/02_Cases/o365_suspicious_login/CASE-2026-1004 - Multiple failed logins from residential proxy but no successful access.md Normal file
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---
case_id: CASE-2026-1004
scenario: o365_suspicious_login
alert_type: azuread_password_spray_attempt
severity: medium
verdict: uncertain
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-1004 Multiple failed logins from residential proxy but no successful access
## 基本信息
- Case ID: CASE-2026-1004
- 标题: Multiple failed logins from residential proxy but no successful access
- 告警类型: azuread_password_spray_attempt
- 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: uncertain
- 严重等级: medium
## 告警摘要
Repeated failed Microsoft 365 sign-in attempts targeted one user from a residential proxy network, with no successful authentication observed.
## 关键实体
- 用户: frank@corp.example
- 主机: 无
- 邮箱: frank@corp.example
- IP: 203.0.113.201
- 域名: 无
- 文件 Hash: 无
- 其他 IOC: 无
## 关键证据
- High-volume failed attempts over a short period.
- Source IP attributed to a residential proxy provider.
- No matching successful sign-in or MFA event found.
## 研判过程摘要
1. 确认告警场景与核心风险：Repeated failed Microsoft 365 sign-in attempts targeted one user from a residential proxy network, with no successful authentication observed.
2. 提取关键证据并交叉验证：High-volume failed attempts over a short period.
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：uncertain。
## 结论依据
- 结论为uncertain。
- 最关键依据：High-volume failed attempts over a short period.
- 补充依据：Source IP attributed to a residential proxy provider.
## 处置建议
- 复核登录来源、MFA 事件和后续邮箱规则或 OAuth 变更。
- 若存在账号接管迹象，立即执行会话失效和凭据重置。
## 可复用模式
- 命中模式: scenario:o365_suspicious_login, alert_type:azuread_password_spray_attempt
- 误报特征: 无
- 需关注的变体: 相关标签：o365, login, password-spray, pending
## 关联知识
- 关联 Playbook: [[PB-O365-LOGIN-001]]
- 关联 KB: [[KB-O365-IMPOSSIBLE-TRAVEL]]
- 关联历史 Case: [[CASE-2026-1001]], [[CASE-2026-1003]]
- 关联实体: [[frank@corp.example]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-1001]] (case score=0.665) This directory contains a structured security incident case report related to a high-severity event in an Office 365 environment, identified...
- [[CASE-2026-1003]] (case score=0.627) This directory contains a structured incident case report focused on a confirmed Microsoft 365 account compromise involving suspicious login...
### 推荐知识条目
- [[PB-O365-LOGIN-001]] (knowledge score=0.614) This directory contains a security playbook focused on detecting and responding to suspicious Microsoft Entra ID sign-in activities within M...
- [[KB-O365-IMPOSSIBLE-TRAVEL]] (knowledge score=0.609) This directory contains a knowledge base artifact focused on analyzing and validating Microsoft 365 impossible travel alerts—security events...
## 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/o365_suspicious_login
- #alert/azuread_password_spray_attempt
- #verdict/uncertain
- #o365
- #login
- #password-spray
- #pending

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obsidian-vault/02_Cases/o365_suspicious_login/CASE-2026-1005 - Traveling executive triggered impossible travel but activity was legitimate.md Normal file
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---
case_id: CASE-2026-1005
scenario: o365_suspicious_login
alert_type: azuread_impossible_travel
severity: medium
verdict: false_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-1005 Traveling executive triggered impossible travel but activity was legitimate
## 基本信息
- Case ID: CASE-2026-1005
- 标题: Traveling executive triggered impossible travel but activity was legitimate
- 告警类型: azuread_impossible_travel
- 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
Executive account triggered impossible travel due to corporate VPN exit node while the user was on an approved overseas trip.
## 关键实体
- 用户: grace@corp.example
- 主机: VIP-LAPTOP-01
- 邮箱: grace@corp.example
- IP: 192.0.2.90, 203.0.113.77
- 域名: 无
- 文件 Hash: 无
- 其他 IOC: 无
## 关键证据
- Approved travel request existed.
- One login originated from corporate VPN exit node.
- Device and user agent were consistent with known user profile.
## 研判过程摘要
1. 确认告警场景与核心风险：Executive account triggered impossible travel due to corporate VPN exit node while the user was on an approved overseas trip.
2. 提取关键证据并交叉验证：Approved travel request existed.
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：Approved travel request existed.
- 补充依据：One login originated from corporate VPN exit node.
## 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:o365_suspicious_login, alert_type:azuread_impossible_travel
- 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：o365, login, false-positive, travel
## 关联知识
- 关联 Playbook: [[PB-O365-LOGIN-001]]
- 关联 KB: [[KB-O365-IMPOSSIBLE-TRAVEL]]
- 关联历史 Case: [[CASE-2026-1001]], [[CASE-2026-1004]]
- 关联实体: [[grace@corp.example]], [[VIP-LAPTOP-01]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-1001]] (case score=0.684) This directory contains a structured security incident case report related to a high-severity event in an Office 365 environment, identified...
- [[CASE-2026-1004]] (case score=0.63) This directory contains a single incident case file related to a suspicious Microsoft 365 login attempt, identified as CASE-2026-1004. The c...
### 推荐知识条目
- [[KB-O365-IMPOSSIBLE-TRAVEL]] (knowledge score=0.703) This directory contains a knowledge base artifact focused on analyzing and validating Microsoft 365 impossible travel alerts—security events...
- [[PB-O365-LOGIN-001]] (knowledge score=0.626) This directory contains a security playbook focused on detecting and responding to suspicious Microsoft Entra ID sign-in activities within M...
## 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/o365_suspicious_login
- #alert/azuread_impossible_travel
- #verdict/false-positive
- #o365
- #login
- #false-positive
- #travel

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obsidian-vault/02_Cases/phishing/CASE-2026-0001 - Finance user received invoice-themed phishing email.md Normal file
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---
case_id: CASE-2026-0001
scenario: phishing
alert_type: mail_suspicious_attachment
severity: high
verdict: true_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-0001 Finance user received invoice-themed phishing email
## 基本信息
- Case ID: CASE-2026-0001
- 标题: Finance user received invoice-themed phishing email
- 告警类型: mail_suspicious_attachment
- 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: 真报
- 严重等级: high
## 告警摘要
Finance user received an invoice-themed phishing email containing a malicious HTML attachment that redirected to a credential harvesting page.
## 关键实体
- 用户: alice@corp.example
- 主机: FIN-LAPTOP-12
- 邮箱: alice@corp.example
- IP: 198.51.100.20
- 域名: vendor-payments.com, vendor-payments-login.com
- 文件 Hash: sha256:phish0001
- 其他 IOC: https://vendor-payments-login.com/review, billing@vendor-payments.com
## 关键证据
- Sender domain was newly observed and failed DMARC.
- Attachment redirected to a fake Microsoft 365 login page.
- User clicked the link before mail quarantine completed.
## 研判过程摘要
1. 确认告警场景与核心风险：Finance user received an invoice-themed phishing email containing a malicious HTML attachment that redirected to a credential harvesting page.
2. 提取关键证据并交叉验证：Sender domain was newly observed and failed DMARC.
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：真报。
## 结论依据
- 结论为真报。
- 最关键依据：Sender domain was newly observed and failed DMARC.
- 补充依据：Attachment redirected to a fake Microsoft 365 login page.
## 处置建议
- 隔离相同主题、发件人或 URL 的邮件样本。
- 核查用户是否点击或提交凭据，并按需执行凭据重置。
## 可复用模式
- 命中模式: scenario:phishing, alert_type:mail_suspicious_attachment
- 误报特征: 无
- 需关注的变体: 相关标签：phishing, email, credential-harvest, finance
## 关联知识
- 关联 Playbook: [[PB-PHISH-001]]
- 关联 KB: [[KB-PHISH-HEADER-CHECK]], [[KB-CRED-HARVEST-PATTERNS]]
- 关联历史 Case: [[CASE-2026-0004]], [[CASE-2026-0002]]
- 关联实体: [[alice@corp.example]], [[FIN-LAPTOP-12]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-0004]] (case score=0.662) This directory contains a structured incident case report related to a phishing attack targeting a shared mailbox via a spoofed OneDrive not...
- [[CASE-2026-0002]] (case score=0.631) This directory contains a single case record detailing the investigation of a suspicious payroll notification email flagged due to a shorten...
### 推荐知识条目
- [[KB-CRED-HARVEST-PATTERNS]] (knowledge score=0.656) This directory contains a structured knowledge base artifact focused on identifying and investigating credential harvesting campaigns, parti...
- [[PB-PHISH-001]] (knowledge score=0.639) This directory contains a phishing email investigation playbook designed to standardize incident response procedures for suspicious emails, ...
## 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_attachment
- #verdict/true-positive
- #phishing
- #email
- #credential-harvest
- #finance

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---
case_id: CASE-2026-0002
scenario: phishing
alert_type: mail_suspicious_link
severity: medium
verdict: false_positive
source: soc-memory-poc
openviking_enriched: 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
- 用户: bob@corp.example
- 主机: HR-LAPTOP-03
- 邮箱: bob@corp.example
- IP: 无
- 域名: hr-vendor.example
- 文件 Hash: 无
- 其他 IOC: https://bit.ly/hr-portal-example, notify@hr-vendor.example
## 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
- 关联 Playbook: [[PB-PHISH-001]]
- 关联 KB: [[KB-PHISH-HEADER-CHECK]], [[KB-CRED-HARVEST-PATTERNS]]
- 关联历史 Case: [[CASE-2026-0004]], [[CASE-2026-0001]]
- 关联实体: [[bob@corp.example]], [[HR-LAPTOP-03]]
## 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

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---
case_id: CASE-2026-0003
scenario: phishing
alert_type: mail_bec_impersonation
severity: high
verdict: true_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-0003 Executive impersonation email requested urgent wire transfer
## 基本信息
- Case ID: CASE-2026-0003
- 标题: Executive impersonation email requested urgent wire transfer
- 告警类型: mail_bec_impersonation
- 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: 真报
- 严重等级: high
## 告警摘要
An executive impersonation email targeted finance staff with an urgent wire transfer request from a lookalike domain.
## 关键实体
- 用户: carol@corp.example
- 主机: FIN-LAPTOP-08
- 邮箱: carol@corp.example
- IP: 203.0.113.45
- 域名: c0rp-example.com
- 文件 Hash: 无
- 其他 IOC: ceo@c0rp-example.com
## 关键证据
- Lookalike domain used numeric substitution.
- Language pressure matched prior BEC pattern.
- No historical communication from sender domain.
## 研判过程摘要
1. 确认告警场景与核心风险：An executive impersonation email targeted finance staff with an urgent wire transfer request from a lookalike domain.
2. 提取关键证据并交叉验证：Lookalike domain used numeric substitution.
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：真报。
## 结论依据
- 结论为真报。
- 最关键依据：Lookalike domain used numeric substitution.
- 补充依据：Language pressure matched prior BEC pattern.
## 处置建议
- 隔离相同主题、发件人或 URL 的邮件样本。
- 核查用户是否点击或提交凭据，并按需执行凭据重置。
## 可复用模式
- 命中模式: scenario:phishing, alert_type:mail_bec_impersonation
- 误报特征: 无
- 需关注的变体: 相关标签：phishing, bec, executive-impersonation
## 关联知识
- 关联 Playbook: [[PB-PHISH-001]]
- 关联 KB: [[KB-CRED-HARVEST-PATTERNS]], [[KB-PHISH-HEADER-CHECK]]
- 关联历史 Case: [[CASE-2026-0001]], [[CASE-2026-0004]]
- 关联实体: [[carol@corp.example]], [[FIN-LAPTOP-08]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-0001]] (case score=0.572) This directory contains a structured case report detailing a high-severity phishing incident targeting a finance user via a malicious invoic...
- [[CASE-2026-0004]] (case score=0.566) This directory contains a structured incident case report related to a phishing attack targeting a shared mailbox via a spoofed OneDrive not...
### 推荐知识条目
- [[PB-PHISH-001]] (knowledge score=0.538) This directory contains a phishing email investigation playbook designed to standardize incident response procedures for suspicious emails, ...
- [[KB-CRED-HARVEST-PATTERNS]] (knowledge score=0.522) This directory contains a structured knowledge base artifact focused on identifying and investigating credential harvesting campaigns, parti...
- [[KB-PHISH-HEADER-CHECK]] (knowledge score=0.512) This directory contains a structured knowledge base document focused on validating phishing emails through detailed analysis of email header...
## 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_bec_impersonation
- #verdict/true-positive
- #phishing
- #bec
- #executive-impersonation

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---
case_id: CASE-2026-0004
scenario: phishing
alert_type: mail_suspicious_attachment
severity: medium
verdict: true_positive
source: soc-memory-poc
openviking_enriched: true
---
# CASE-2026-0004 Shared mailbox received OneDrive lure with HTML attachment
## 基本信息
- Case ID: CASE-2026-0004
- 标题: Shared mailbox received OneDrive lure with HTML attachment
- 告警类型: mail_suspicious_attachment
- 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: 真报
- 严重等级: medium
## 告警摘要
Shared finance mailbox received a fake OneDrive notification with an HTML attachment that led to credential collection.
## 关键实体
- 用户: shared-finance@corp.example
- 主机: 无
- 邮箱: shared-finance@corp.example
- IP: 198.51.100.87
- 域名: sharepoint-notify.com
- 文件 Hash: sha256:phish0004
- 其他 IOC: https://onedrive-review-login.example, noreply@sharepoint-notify.com
## 关键证据
- Attachment rendered a fake Microsoft sign-in page.
- Landing page hosted outside Microsoft IP space.
- Mail body reused branding from previous phishing campaign.
## 研判过程摘要
1. 确认告警场景与核心风险：Shared finance mailbox received a fake OneDrive notification with an HTML attachment that led to credential collection.
2. 提取关键证据并交叉验证：Attachment rendered a fake Microsoft sign-in page.
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：真报。
## 结论依据
- 结论为真报。
- 最关键依据：Attachment rendered a fake Microsoft sign-in page.
- 补充依据：Landing page hosted outside Microsoft IP space.
## 处置建议
- 隔离相同主题、发件人或 URL 的邮件样本。
- 核查用户是否点击或提交凭据，并按需执行凭据重置。
## 可复用模式
- 命中模式: scenario:phishing, alert_type:mail_suspicious_attachment
- 误报特征: 无
- 需关注的变体: 相关标签：phishing, email, onedrive-lure
## 关联知识
- 关联 Playbook: [[PB-PHISH-001]]
- 关联 KB: [[KB-CRED-HARVEST-PATTERNS]]
- 关联历史 Case: [[CASE-2026-0001]], [[CASE-2026-0003]]
- 关联实体: [[shared-finance@corp.example]]
## 自动关联推荐
### 推荐历史 Case
- [[CASE-2026-0001]] (case score=0.675) This directory contains a structured case report detailing a high-severity phishing incident targeting a finance user via a malicious invoic...
- [[CASE-2026-0003]] (case score=0.606) This directory contains a structured incident report for a high-severity phishing attack involving executive impersonation, classified under...
### 推荐知识条目
- [[KB-CRED-HARVEST-PATTERNS]] (knowledge score=0.652) This directory contains a structured knowledge base artifact focused on identifying and investigating credential harvesting campaigns, parti...
- [[PB-PHISH-001]] (knowledge score=0.608) This directory contains a phishing email investigation playbook designed to standardize incident response procedures for suspicious emails, ...
## 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_attachment
- #verdict/true-positive
- #phishing
- #email
- #onedrive-lure

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# Case Note Template
## 基本信息
- Case ID:
- 标题:
- 告警类型:
- 来源系统:
- 时间范围:
- 研判人 / Agent:
- 最终结论:
- 严重等级:
## 告警摘要
一句话概述这次 case 的核心问题。
## 关键实体
- 用户:
- 主机:
- 邮箱:
- IP:
- 域名:
- 文件 Hash:
- 其他 IOC:
## 关键证据
- 证据 1:
- 证据 2:
- 证据 3:
## 研判过程摘要
只保留对后续复用有价值的关键步骤，不记录所有原始过程。
1.
2.
3.
## 结论依据
- 为什么判定为真报 / 误报 / 可疑待定
- 哪些信号最关键
## 处置建议
-
-
## 可复用模式
- 命中模式:
- 误报特征:
- 需关注的变体:
## 关联知识
- 关联 Playbook:
- 关联 KB:
- 关联历史 Case:
- 关联实体:
## Lessons Learned
- 本案新增了什么可复用经验
- 哪些规则、知识或流程应更新
## 标签
- `#case`
- `#alert/...`
- `#verdict/true-positive`
- `#verdict/false-positive`
- `#ttp/...`

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# Playbook Template
## 基本信息
- 名称:
- 适用告警类型:
- 场景:
- 最近更新时间:
- 负责人:
## 场景描述
这个 playbook 解决什么问题，适用于哪些前置条件。
## 输入信号
- 必要信号:
- 可选信号:
- 常见数据源:
## 调查步骤
1.
2.
3.
## 关键判断点
- 什么情况下倾向真报
- 什么情况下倾向误报
- 哪些证据最关键
## 常见误报模式
-
-
## 常见真报模式
-
-
## 升级 / 处置建议
-
-
## 关联内容
- 相关 Case:
- 相关 KB:
- 相关 IOC:
- 相关 TTP:
## 标签
- `#playbook`
- `#alert/...`
- `#ttp/...`

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# Report Summary Template
## 基本信息
- 标题:
- 来源:
- 日期:
- 作者 / 团队:
- 类型:
## 核心摘要
用 3 到 5 句话总结对 SOC 研判最有帮助的内容。
## 关键发现
- 发现 1:
- 发现 2:
- 发现 3:
## 关键实体
- 攻击者:
- 工具:
- 域名 / IP:
- Hash:
- 邮件主题 / 发件特征:
## 对 SOC 的实际价值
- 对哪些告警类型有帮助
- 对哪些 playbook 需要更新
- 对哪些规则或研判路径有启发
## 可沉淀记忆
- 哪些内容适合作为 Knowledge Memory
- 哪些内容适合作为 Case Pattern
## 关联内容
- 关联 KB:
- 关联 Playbook:
- 关联 Case:
- 关联 TTP:
## 标签
- `#report`
- `#intel`
- `#ttp/...`
- `#campaign/...`

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# Obsidian Vault
这个目录用于保存 Obsidian Vault 的推荐骨架。
原则：
- 只存高价值、可人工维护的沉淀
- 不存全量原始资料
- 不把 ticket 原文、报告全文直接塞进 Vault
建议优先建设：
- `01_Knowledge/`
- `02_Cases/`
- `05_Templates/`