Full Report
FortiGuard Labs discovers an advanced attack using modified Havoc Demon and SharePoint. Explore the attack's evasion techniques and security measures.
Analysis Summary
# Tool/Technique: Attack leveraging Microsoft Graph API, Havoc Demon, and SharePoint
## Overview
This describes an advanced attack campaign discovered by FortiGuard Labs that targets Windows systems by exploiting the Microsoft Graph API, utilizing a modified version of the Havoc Demon C2 framework, and likely involving SharePoint for delivery or persistence.
## Technical Details
- Type: Malware Campaign / Toolchain
- Platform: Windows
- Capabilities: Initial access/infection leveraging compromised Microsoft Graph permissions, C2 communication via Havoc software, evasion techniques.
- First Seen: Unknown (Based on recent discovery by FortiGuard Labs)
## MITRE ATT&CK Mapping
*(Note: Specific mappings require detailed analysis of the exploit chain, but based on the components mentioned, general mappings for C2 and API abuse are inferred)*
- TA0011 - Command and Control
- T1071 - Application Layer Protocol
- T1071.001 - Web Protocols
- TA0002 - Execution (Implied by malware delivery)
- T1204 - User Execution (If phishing/social engineering involved)
## Functionality
### Core Capabilities
- **Microsoft Graph API Abuse:** Utilizing legitimate API endpoints for potentially malicious activities, likely for initial access, data exfiltration, or establishing persistence within a compromised tenant or system.
- **Initial Infection:** Targeting Windows environments leading to compromise.
### Advanced Features
- **Modified Havoc Demon:** Using a seemingly customized or modified version of the Havoc C2 framework, suggesting advanced adversary tradecraft aimed at evading detection, specifically mentioned via its evasion techniques.
- **SharePoint Integration:** Likely using SharePoint for hosting malicious payloads, staging data, or maintaining persistence/communication channels.
## Indicators of Compromise
- File Hashes: [Information not provided in the context]
- File Names: [Information not provided in the context]
- Registry Keys: [Information not provided in the context]
- Network Indicators: [Potential abuse/communication related to Microsoft Graph API endpoints; C2 traffic associated with Havoc variants - defanged]
- Behavioral Indicators: [Execution of processes associated with Havoc C2 beacons; unauthorized API calls against Microsoft Graph.]
## Associated Threat Actors
- [Information not provided in the context, attributed to a campaign discovered by FortiGuard Labs]
## Detection Methods
- Signature-based detection: [Signatures for known Havoc variants/payloads]
- Behavioral detection: [Monitoring for unusual outbound traffic/API calls directed at Microsoft Graph API from non-standard processes; monitoring for known Havoc implant execution.]
- YARA rules if available: [Information not provided in the context]
## Mitigation Strategies
- Prevention measures: Strict monitoring and auditing of Microsoft Graph API permissions and usage, especially for unusual application registrations or delegated permissions.
- Hardening recommendations: Implementing strong endpoint detection and response (EDR) solutions capable of identifying C2 frameworks like Havoc; ensuring least privilege access across the organization.
## Related Tools/Techniques
- Havoc C2 Framework (Base tool)
- Microsoft Graph API abuse (Technique)
- SharePoint exploitation/abuse (Potential delivery/persistence vector)