Description of Campaign
An APT, identified as the LuoYu attack group active since 2014 and believed to have origins in China, was recently seen using the WinDealer information stealer to target expatriate and dissidents as well as the technology, media, and education sectors. WinDealer is a modular information stealer that gathers and exfiltrates information on the targeted device including system information as well as screen, video, and audio captures. Once the target machine has been successfully compromised, WinDealer creates several folders for staging, configuration access, and communication with the attacker controlled C2 server.
The McAfee Enterprise ATR Team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports.
This campaign was researched by JPCERT/CC and shared publicly here.
How to use this article:
- If a Threat Hunting table has been created, use the rules contained to search for malware related to this campaign.
- Review the product detection table and confirm that your environment is at least on the specified content version.
To download the latest content versions, go to the Security Updates page.
- Scroll down and review the "Product Countermeasures" section of this article. Consider implementing them if they are not already in place.
- Review KB91836 - Countermeasures for entry vector threats.
- Review KB87843 - Dynamic Application Containment rules and best practices.
- Review KB82925 - Identify what rule corresponds to an Adaptive Threat Protection and Threat Intelligence Exchange event.
This Knowledge Base article discusses a specific threat that is being tracked. The list of IOCs will change over time; check MVISION Insights for the latest IOCs.
Campaign IOC
| Type |
Value |
| SHA256 |
1E9FC7F32BD5522DD0222932EB9F1D8BD0A2E132C7B46CFCC622AD97831E6128 |
| SHA256 |
B9F526EEA625EEC1DDAB25A0FC9BD847F37C9189750499C446471B7A52204D5A |
| SHA256 |
2EEF273AF0C768B514DB6159D7772054D27A6FA8BC3D862DF74DE75741DBFB9C |
| SHA256 |
0C365D9730A10F1A3680D24214682F79F88AA2A2A602D3D80EF4C1712210AB07 |
Minimum Content Versions:
| Content Type |
Version |
| V2 DAT (VirusScan Enterprise) |
10157 |
| V3 DAT (Endpoint Security) |
4609 |
Detection Summary
| IOC |
Scanner |
Detection |
| 1E9FC7F32BD5522DD0222932EB9F1D8BD0A2E132C7B46CFCC622AD97831E6128 |
AVEngine V2 |
Trojan-FUAO!5A7A90CEB6E7 |
| AVEngine V3 |
Trojan-FUAO!5A7A90CEB6E7 |
| JTI (ATP Rules) |
JTI/Suspect.196612!5a7a90ceb6e7 |
| RP Static |
- |
| RP Dynamic |
- |
| IOC |
Scanner |
Detection |
| B9F526EEA625EEC1DDAB25A0FC9BD847F37C9189750499C446471B7A52204D5A |
AVEngine V2 |
Trojan-FUAO!FAA8EAED63C4 |
| AVEngine V3 |
Trojan-FUAO!FAA8EAED63C4 |
| JTI (ATP Rules) |
JTI/Suspect.196612!faa8eaed63c4 |
| RP Static |
- |
| RP Dynamic |
- |
| IOC |
Scanner |
Detection |
| 2EEF273AF0C768B514DB6159D7772054D27A6FA8BC3D862DF74DE75741DBFB9C |
AVEngine V2 |
Agent-FPA!D45E50D0CC6C |
| AVEngine V3 |
Agent-FPA!D45E50D0CC6C |
| JTI (ATP Rules) |
JTI/Suspect.196612!d45e50d0cc6c |
| RP Static |
- |
| RP Dynamic |
- |
| IOC |
Scanner |
Detection |
| 0C365D9730A10F1A3680D24214682F79F88AA2A2A602D3D80EF4C1712210AB07 |
AVEngine V2 |
Agent-FPA!46C1B81D2CC9 |
| AVEngine V3 |
Agent-FPA!46C1B81D2CC9 |
| JTI (ATP Rules) |
JTI/Suspect.196612!46c1b81d2cc9 |
| RP Static |
- |
| RP Dynamic |
- |
Minimum set of Manual Rules to improve protection to block this campaign
IMPORTANT: Always follow best practices when you enable new rules and signatures.
When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.
For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
Endpoint Security - Advanced Threat Protection:
Rule ID: 4 Use GTI file reputation to identify trusted or malicious files
Aggressive set of Manual Rules to improve protection to block this campaign
IMPORTANT: Always follow best practices when you enable new rules and signatures.
When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.
For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
Host Intrusion Prevention:
Rule ID: 6011 Generic Application Invocation Protection
Rule ID: 6010 Generic Application Hooking Protection
Rule ID: 1020 Windows Agent Shielding - File Access
Rule ID: 1148 CMD Tool Access by a Network Aware Application
