Potential CSharp Streamer RAT Loading .NET Executable Image

 1title: Potential CSharp Streamer RAT Loading .NET Executable Image
 2id: 6f6afac3-8e7a-4e4b-9588-2608ffe08f82
 3status: test
 4description: |
 5        Detects potential CSharp Streamer RAT loading .NET executable image by using the default file name and path associated with the tool.
 6references:
 7    - https://thedfirreport.com/2024/06/10/icedid-brings-screenconnect-and-csharp-streamer-to-alphv-ransomware-deployment/#detections
 8    - https://cyber.wtf/2023/12/06/the-csharp-streamer-rat/
 9author: Luca Di Bartolomeo
10date: 2024-06-22
11tags:
12    - attack.command-and-control
13    - attack.t1219.002
14    - detection.emerging-threats
15logsource:
16    category: image_load
17    product: windows
18detection:
19    selection:
20        ImageLoaded|re: '\\AppData\\Local\\Temp\\dat[0-9A-Z]{4}\.tmp'
21    condition: selection
22falsepositives:
23    - Unknown
24level: high

References

• IcedID Brings ScreenConnect and CSharp Streamer to ALPHV Ransomware Deployment

  

  Key Takeaways In October 2023, we observed an intrusion that began with a spam campaign, distributing a forked IcedID loader. The threat actor used Impacket’s wmiexec and RDP to install Scree…

  
  Read More

• The csharp-streamer RAT | cyber.wtf

  In an Incident Response case earlier this year, we encountered an interesting piece of malware that turned out to be a RAT written in C#. In this post we’ll give an overview about how it was loaded...

  
  Read More

Related rules

• Potential SocGholish Second Stage C2 DNS Query
• Antivirus Exploitation Framework Detection
• Anydesk Temporary Artefact
• Atera Agent Installation
• DNS Query To AzureWebsites.NET By Non-Browser Process