mukul975/anthropic-cybersecurity-skills

hunting-for-t1098-account-manipulation

Hunts for MITRE ATT&CK T1098 account manipulation - shadow admin creation, SID history injection, group membership changes, and credential modifications - by analyzing Windows Security Event Log IDs 4738, 4728, 4732, 4756, 4670, and 5136.

First seen Mar 17, 2026

Installation

$ npx skills add mukul975/anthropic-cybersecurity-skills --skill hunting-for-t1098-account-manipulation

Summary

  • Hunts for MITRE ATT&CK T1098 account manipulation - shadow admin creation, SID history injection, group membership changes, and credential modifications - by analyzing Windows Security Event Log IDs 4738, 4728, 4732, 4756, 4670, and 5136.
  • Use when investigating suspected privilege persistence in Active Directory, after detecting anomalous group/credential changes, or during incident response to trace account tampering.

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More details

Agent compatibility

Declared targets from SKILL.md / docs. Unmarked agents are not listed — the skill may still install via the CLI.

Claude Code Not declared
Cursor Not declared
Codex Not declared
GitHub Copilot Not declared
Windsurf Not declared
Gemini CLI Not declared
Cline Not declared
OpenCode Not declared

Repository health

Stars 32.4K
License LICENSE
Default branch main
Open issues 20
Status Active

Skill metadata

Parsed from SKILL.md frontmatter.

Version1.0
LicenseApache-2.0

Package contents

Files included with this skill beyond the listing page.

  • skill md SKILL.md 2,920 B
  • docs SUMMARY.md 468 B

History

  1. First seen on skills.sh
  2. First recorded snapshot · 52 installs

SKILL.md

Hunting for T1098 Account Manipulation

Overview

MITRE ATT&CK T1098 (Account Manipulation) covers adversary actions to maintain or expand access to compromised accounts, including adding credentials, modifying group memberships, SID history injection, and creating shadow admin accounts. This skill covers detecting these techniques through Windows Security Event Log analysis (Event IDs 4738, 4728, 4732, 4756, 4670, 5136), correlating group membership changes with privilege escalation indicators, and identifying anomalous account modification patterns.

When to Use

  • When investigating security incidents that require hunting for t1098 account manipulation
  • 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

  • Windows Security Event Logs (EVTX format) or SIEM access
  • Python 3.9+ with python-evtx, lxml libraries
  • Understanding of Active Directory group structure and SID architecture
  • Familiarity with MITRE ATT&CK T1098 sub-techniques

Steps

Step 1: Parse Account Modification Events

Extract Event IDs 4738 (user account changed), 4728/4732/4756 (member added to security groups), and 5136 (directory service object modified).

Step 2: Detect Privileged Group Changes

Flag additions to Domain Admins, Enterprise Admins, Schema Admins, Administrators, and Backup Operators groups.

Step 3: Identify Shadow Admin Indicators

Detect accounts receiving AdminSDHolder protection, direct privilege assignment, or SID history injection.

Step 4: Correlate with Attack Timeline

Cross-reference account changes with authentication events to identify initial compromise and persistence establishment.

Expected Output

JSON report with detected account manipulation events, privileged group changes, shadow admin indicators, and timeline correlation.