user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:JS/GuLoader.RBG!MTB
Trojan:JS/GuLoader.RBG!MTB - Windows Defender threat signature analysis

Trojan:JS/GuLoader.RBG!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:JS/GuLoader.RBG!MTB
Classification:
Type:Trojan
Platform:JS
Family:GuLoader
Detection Type:Concrete
Known malware family with identified signatures
Variant:RBG
Specific signature variant within the malware family
Suffix:!MTB
Detected via machine learning and behavioral analysis
Detection Method:Behavioral
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Trojan - Appears legitimate but performs malicious actions for JavaScript platform, family GuLoader

Summary:

This is a JavaScript-based GuLoader trojan, detected with high confidence through machine learning behavioral analysis (!MTB). Its primary function is to act as an initial access broker, downloading and executing additional, more potent malware such as info-stealers or ransomware onto the compromised system, posing a significant risk for further compromise.

Severity:
High
VDM Static Detection:
Relevant strings associated with this threat:
 - licans voldelighederne.exe (PEHSTR_EXT)
 - Knight-Ridder Inc. (PEHSTR_EXT)
 - Medtronic Inc. (PEHSTR_EXT)
 - Comfort Systems USA Inc. (PEHSTR_EXT)
 - unreworded demimondn.exe (PEHSTR_EXT)
Known malware which is associated with this threat:
Filename: 7.js
5ded7c4ad3c93e276831219db29e0acaf80994e2007c4539a436d12d9ce29ef5
22/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected system from the network to prevent further spread. Conduct a full system scan with updated antivirus software and remove all detected components. Thoroughly investigate for any signs of secondary infections, consider a system re-image if critical, and reset user credentials potentially exposed.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 22/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊