Full Report
2025-02-20 • Trend Micro • Daniel Lunghi • win.evilextractor, win.plugx, win.shadowpad Open article on Malpedia
Analysis Summary
Based on the provided context, which is extremely sparse and seems to be a metadata snippet rather than a full article, the summary will be limited to what can be inferred from the provided text elements, focusing on the indicated malware families.
# Tool/Technique: ShadowPad
## Overview
ShadowPad is a sophisticated piece of malware, mentioned in context with leading to Ransomware deployment. It suggests an initial access or backdoor component that subsequently facilitates the final stage of an attack (ransomware).
## Technical Details
- Type: Malware family
- Platform: Primarily Windows (inferred from related malware comparison and typical use)
- Capabilities: Backdoor functionality, persistence, potential for secondary payload delivery (like ransomware).
- First Seen: Unknown from context, but ShadowPad has been active for several years.
## MITRE ATT&CK Mapping
*(Note: Mappings are based on general knowledge of ShadowPad, as the article content is unavailable.)*
- TA0011 - Command and Control
- T1071 - Application Layer Protocol
- TA0003 - Persistence
- T1547 - Boot or Logon Autostart Execution
## Functionality
### Core Capabilities
- Establishing a C2 channel.
- Maintaining persistence on the compromised system.
### Advanced Features
- Often used as a modular platform to download and execute subsequent stages, in this context, leading to ransomware deployment.
## Indicators of Compromise
- File Hashes: N/A (Not provided in context)
- File Names: win.shadowpad (Inferred from context snippet)
- Registry Keys: N/A (Not provided in context)
- Network Indicators: N/A (Not provided in context)
- Behavioral Indicators: N/A (Not provided in context)
## Associated Threat Actors
- Typically associated with Chinese-linked advanced persistent threat (APT) groups, though final attribution from the provided context is impossible.
## Detection Methods
- Signature-based detection: Relying on known file hashes and strings associated with ShadowPad loaders/DLLs.
- Behavioral detection: Monitoring suspicious process injection or communication with command and control infrastructure.
- YARA rules: Targeting known code sections or encryption routines within the binary.
## Mitigation Strategies
- Network segmentation and egress filtering to block or monitor outbound C2 traffic.
- Strict application whitelisting to prevent unauthorized execution of suspect payloads.
- Regular patching to prevent initial compromise vectors that deliver ShadowPad.
## Related Tools/Techniques
- win.plugx (Mentioned in context, often used by similar threat actors)
- win.evilextractor (Mentioned in context, suggesting related auxiliary tools)
---
# Tool/Technique: PlugX
## Overview
PlugX (also often referred to as PlugX or `.plugx` malware) is a remote access Trojan (RAT) known for its modular nature and its use by various sophisticated threat actors. The context suggests its presence alongside ShadowPad.
## Technical Details
- Type: Malware family (RAT)
- Platform: Primarily Windows
- Capabilities: Remote control, data exfiltration, execution of arbitrary commands, flexibility due to plugins.
- First Seen: Circa 2012, continuously evolving.
## MITRE ATT&CK Mapping
*(Note: Mappings are based on general knowledge of PlugX, as the article content is unavailable.)*
- TA0011 - Command and Control
- T1071.001 - Application Layer Protocol: Web Protocols
- TA0005 - Defense Evasion
- T1027 - Obfuscated Files or Information
## Functionality
### Core Capabilities
- Establishing backdoor access.
- Downloader capabilities for secondary payloads.
### Advanced Features
- Strong obfuscation techniques to evade both static and heuristic analysis.
- Modular architecture allowing operators to update or change functions dynamically.
## Indicators of Compromise
- File Hashes: N/A (Not provided in context)
- File Names: win.plugx (Inferred from context snippet)
- Registry Keys: N/A (Not provided in context)
- Network Indicators: N/A (Not provided in context)
- Behavioral Indicators: N/A (Not provided in context)
## Associated Threat Actors
- Numerous APT groups, particularly those targeting East Asia and defense industries.
## Detection Methods
- Signature-based detection: Known file hashes and mutexes.
- Behavioral detection: Monitoring for suspicious outbound connections by non-standard processes or API hooking attempts characteristic of RATs.
- YARA rules: Targeting known module formats or configurations.
## Mitigation Strategies
- Implementing advanced endpoint detection and response (EDR) solutions capable of spotting in-memory obfuscated code.
- DNS Sinkholing for known PlugX C2 infrastructure (if identified).
## Related Tools/Techniques
- ShadowPad (Mentioned in context as co-occurring)
---
**Note on Contextual Synthesis:** The provided input was a fragmented string: `Inventory Statistics Usage ApiVector Login 2025-02-20 (Back to Inventory) Propose Change Updated Shadowpad Malware Leads to Ransomware Deployment Author(s): Daniel Lunghi Organization: Trend Micro win.evilextractor win.plugx win.shadowpad Open article directly Open article on Archive.org Show BibTex Entry`. This summary is strictly based on the identified malware names (`ShadowPad`, `PlugX`) and the noted implication that ShadowPad facilitates ransomware deployment. Specific technical details (IOCs, precise dates) could not be extracted from the context.