Hunting For Supply Chain Compromise

---
name: hunting-for-supply-chain-compromise
description: Hunt for supply chain compromise indicators including trojanized software updates, compromised dependencies, unauthorized code modifications, and tampered build artifacts.
tags:
- t1195
- threat-hunting
- initial-access
- fetih
- mitre-attack
- cybersecurity
- supply-chain
- siber-güvenlik
- proactive-detection
triggers:
- alert
- anomali tespit
- chain
- compromise
- endpoint
- hunting
- incident
- log
- malware
- network
- supply
- tehdit ara
category: threat-hunting
source_subdomain: threat-hunting
nist_csf:
- DE.CM-01
- DE.AE-02
- DE.AE-07
- ID.RA-05
adapted_for: fetih
---

# Hunting for Supply Chain Compromise


## Ne Zaman Kullanılır

- Proaktif olarak şu göstergeleri ararken: hunting for supply chain compromise in the environment
- threat intelligence sonrasında indicates active campaigns using these techniques
- incident response sırasında to scope compromise related to these techniques
- EDR veya SIEM alarmları ilgili göstergeleri tetiklediğinde
- Periyodik güvenlik değerlendirmeleri ve purple team egzersizleri sırasında

## Ön Gereksinimler

- EDR platform with process and network telemetry (CrowdStrike, MDE, SentinelOne)
- SIEM with relevant log data ingested (Splunk, Elastic, Sentinel)
- Sysmon Dağıtılmış with comprehensive configuration
- Windows Security Event Log forwarding enabled
- Threat intelligence feeds for IOC correlation

## İş Akışı

1. **Formulate Hypothesis**: Define a testable hypothesis based on threat intelligence or ATT&CK gap analysis.
2. **Identify Data Sources**: Belirle: which logs and telemetry are needed to validate or refute the hypothesis.
3. **Execute Queries**: Run Tespit queries against SIEM and EDR platforms to collect relevant events.
4. **Analyze Results**: İncele: query results for anomalies, correlating across multiple data sources.
5. **Validate Bul:ings**: Distinguish true positives from false positives through contextual analysis.
6. **Correlate Activity**: Link Bul:ings to broader attack chains and threat actor TTPs.
7. **Document and Report**: Record Bul:ings, update Tespit rules, and recommend response actions.

## Key Concepts

| Concept | Description |
|---------|-------------|
| T1195.001 | Compromise Software Dependencies |
| T1195.002 | Compromise Software Supply Chain |
| T1199 | Trusted Relationship |

## Tools & Systems

| Tool | Purpose |
|------|---------|
| CrowdStrike Falcon | EDR telemetry and threat Tespit |
| Microsoft Defender for Endpoint | Advanced hunting with KQL |
| Splunk Enterprise | SIEM log analysis with SPL queries |
| Elastic Security | Tespit rules and investigation timeline |
| Sysmon | Detailed Windows event monitoring |
| Velociraptor | Endpoint artifact collection and hunting |
| Sigma Rules | Cross-platform Tespit rule format |

## Common Scenarios

1. **Scenario 1**: SolarWinds-style update mechanism compromise
2. **Scenario 2**: Compromised npm/PyPI package with backdoor
3. **Scenario 3**: Tampered build server Dağıt:ing malicious artifacts
4. **Scenario 4**: Vendor VPN software update delivering malware

## Output Format

```
Hunt ID: TH-HUNTIN-[DATE]-[SEQ]
Technique: T1195.001
Host: [Hostname]
User: [Account context]
Evidence: [Log entries, process trees, network data]
Risk Level: [Critical/High/Medium/Low]
Confidence: [High/Medium/Low]
Recommended Action: [Containment, investigation, monitoring]
```

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