Full Report
2025-04-22 • SentinelOne • SentinelOne • win.fog Open article on Malpedia
Analysis Summary
The provided article description is extremely minimal and only serves as a metadata header for an analysis titled "What Is Fog Ransomware?". It names the malware family, links to the source (SentinelOne), and provides inventory tags.
**Crucially, the description does not contain any technical details, specific capabilities, MITRE ATT&CK mappings, IOCs, or associated threat actors.**
Therefore, the summary will be highly skeletal, based only on the high-level identification of the malware.
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# Tool/Technique: Fog Ransomware
## Overview
Fog Ransomware is a piece of malware identified and analyzed by SentinelOne. Based on its naming convention, it is primarily a strain of ransomware designed to encrypt victim files.
## Technical Details
- Type: Malware family (Ransomware)
- Platform: Windows (Inferred from the tag `win.fog`)
- Capabilities: Encryption of user data (Inferred from "Ransomware")
- First Seen: Unknown (Not specified in context)
## MITRE ATT&CK Mapping
- No specific mapping available based on the provided context.
## Functionality
### Core Capabilities
- Encryption of files (Inferred).
### Advanced Features
- Not specified in the provided context.
## Indicators of Compromise
- File Hashes: N/A
- File Names: N/A
- Registry Keys: N/A
- Network Indicators: N/A
- Behavioral Indicators: N/A
## Associated Threat Actors
- Not specified in the provided context.
## Detection Methods
- Detection relies on analysis of the specific binary identified as `win.fog`.
- Signature-based detection (If signatures are developed post-analysis).
- Behavioral detection (Monitoring for file encryption activities).
- YARA rules: N/A
## Mitigation Strategies
- Standard ransomware mitigation strategies apply: Regular backups, network segmentation, application whitelisting, and endpoint protection.
- Prevention measures focus on blocking initial access vectors used by the threat actors deploying Fog.
## Related Tools/Techniques
- Other ransomware families that focus on file encryption.