analyzing-office365-audit-logs-for-compromise

analyzing-office365-audit-logs-for-compromise is a skill for Claude Code, Codex from marysatasselshaped667/skills-collection-1. It costs 46 tokens per session (439 once invoked), scanned A, a copy of analyzing-office365-audit-logs-for-compromise, MIT.

An incident-response guide for reading Microsoft 365 audit records through the Microsoft Graph API. These records log administrative and mailbox activity in Microsoft's cloud services.

In plain words
What is it for?
Use it to investigate compromised Microsoft 365 accounts, inspect mailbox rules, find external forwarding, review delegation changes, and detect unauthorized OAuth app access.
Why use it?
Account takeovers can leave traces such as new forwarding rules, mailbox delegation, or suspicious app permissions. Checking the audit records helps identify those changes.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to investigate compromised Microsoft 365 accounts, inspect mailbox rules, find external forwarding, review delegation changes, and detect unauthorized OAuth app access.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add marysatasselshaped667/skills-collection-1 --skill analyzing-office365-audit-logs-for-compromise
Clone the repo
git clone --depth 1 https://github.com/marysatasselshaped667/skills-collection-1

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for analyzing-office365-audit-logs-for-compromise

README.md
[![agentmods](https://agentmods.dev/badge/skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise/github.svg)](https://agentmods.dev/skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise)
Your own site
<a href="https://agentmods.dev/skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise"><img src="https://agentmods.dev/badge/skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise"><img src="https://agentmods.dev/badge/skills/marysatasselshaped667/skills-collection-1/analyzing-office365-audit-logs-for-compromise.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 439 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 88% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.00439
Opus 5 $0.00023 $0.00219
Sonnet 5 $0.00009 $0.00088
Haiku 4.5 $0.00005 $0.00044

Measured 8d ago against content hash 8b4c05bcbe25, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

analyzing-office365-audit-logs-for-compromise scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agent.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

88% identical to analyzing-office365-audit-logs-for-compromise — 25 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

SKILLS/analyzing-office365-audit-logs-for-compromise/SKILL.md · 47 lines

What it actually says

Analyzing Office 365 Audit Logs for Compromise

Overview

Business Email Compromise (BEC) attacks often leave traces in Office 365 audit logs: suspicious inbox rule creation, email forwarding to external addresses, mailbox delegation changes, and unauthorized OAuth application consent grants. This skill uses the Microsoft Graph API to query the Unified Audit Log, enumerate inbox rules across mailboxes, detect forwarding configurations, and identify compromised account indicators.

When to Use

  • When investigating security incidents that require analyzing office365 audit logs for compromise
  • When building detection rules or threat hunting queries for this domain
  • When SOC analysts need structured procedures for this analysis type
  • When validating security monitoring coverage for related attack techniques

Prerequisites

  • Azure AD app registration with AuditLog.Read.All, MailboxSettings.Read, Mail.Read (application permissions)
  • Python 3.9+ with msal, requests
  • Client secret or certificate for authentication
  • Global Reader or Security Reader role

Steps

  1. Authenticate to Microsoft Graph using MSAL client credentials flow
  2. Query Unified Audit Log for suspicious operations (Set-Mailbox, New-InboxRule)
  3. Enumerate inbox rules across mailboxes and flag forwarding rules
  4. Detect mailbox delegation changes (Add-MailboxPermission)
  5. Identify OAuth consent grants to suspicious applications
  6. Check for suspicious sign-in patterns from audit logs
  7. Generate compromise indicator report with timeline

Expected Output

  • JSON report listing forwarding rules, delegation changes, OAuth grants, and suspicious audit events with risk scores
  • Timeline of compromise indicators with affected mailboxes
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 47 lines · 46 tokens per session scan A 8b4c05bcbe25

Subscribe to this mod's changes

analyzing-office365-audit-logs-for-compromise is a skill published in the GitHub repository marysatasselshaped667/skills-collection-1 (1 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 439 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to analyzing-office365-audit-logs-for-compromise, differing in 25 lines, and is treated as a copy.

Related

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analyzing-office365-audit-logs-for-compromise

Parse Office 365 Unified Audit Logs via Microsoft Graph API to detect email forwarding rule creation, inbox delegation, suspicious OAuth app grants, and other indicators of account compromise.

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Parse Office 365 Unified Audit Logs via Microsoft Graph API to detect email forwarding rule creation, inbox delegation, suspicious OAuth app grants, and other indicators of account compromise.

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A guide to examining Microsoft 365 audit records through Microsoft Graph, Microsoft's API for accessing service data, to find signs that an account was taken over.

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