user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:MSIL/Formbook!rfn
Trojan:MSIL/Formbook!rfn - Windows Defender threat signature analysis

Trojan:MSIL/Formbook!rfn - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:MSIL/Formbook!rfn
Classification:
Type:Trojan
Platform:MSIL
Family:Formbook
Detection Type:Concrete
Known malware family with identified signatures
Suffix:!rfn
Specific ransomware family name
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Trojan - Appears legitimate but performs malicious actions for .NET (Microsoft Intermediate Language) platform, family Formbook

Summary:

Trojan:MSIL/Formbook!rfn is a confirmed detection of the Formbook information stealer, a dangerous malware designed to exfiltrate sensitive data from compromised Windows systems. This threat specifically targets .NET applications to steal credentials, browser data, and system information, posing a significant risk of data breach and financial fraud.

Severity:
Critical
VDM Static Detection:
No detailed analysis available from definition files.
Known malware which is associated with this threat:
Filename: 09be3197dedd045fdde5d5e82f0be0f4.exe
aa885d2d8550a5816070d4174a504ae7b4d90e3e50b3dbce7cea17443b6b9080
13/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected device, run a full antivirus scan, and change all critical passwords (email, banking, social media). Monitor financial and online accounts for suspicious activity and consider re-imaging the system for complete assurance against data compromise.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 13/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊