user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat PWS:MSIL/Stealgen.GA!MTB
PWS:MSIL/Stealgen.GA!MTB - Windows Defender threat signature analysis

PWS:MSIL/Stealgen.GA!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: PWS:MSIL/Stealgen.GA!MTB
Classification:
Type:PWS
Platform:MSIL
Family:Stealgen
Detection Type:Concrete
Known malware family with identified signatures
Variant:GA
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: Password Stealer - Steals credentials and sensitive information for .NET (Microsoft Intermediate Language) platform, family Stealgen

Summary:

This is a concrete detection of PWS:MSIL/Stealgen.GA!MTB, a .NET-based password stealer that actively targets sensitive user data. It extracts browser credentials, cookies, and credit card information from applications like Google Chrome and attempts to exfiltrate this data, likely via Discord webhooks.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - \Google\Chrome\User Data\ (PEHSTR_EXT)
 - \Screen. (PEHSTR_EXT)
 - SELECT ExecutablePath, ProcessID FROM Win32_Process (PEHSTR_EXT)
 - SbieDll.dll (PEHSTR_EXT)
 - name="payload_json" (PEHSTR_EXT)
 - https://discordapp.com/api/v{0} (PEHSTR_EXT)
YARA Rule:
rule PWS_MSIL_Stealgen_GA_2147777923_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "PWS:MSIL/Stealgen.GA!MTB"
        threat_id = "2147777923"
        type = "PWS"
        platform = "MSIL: .NET intermediate language scripts"
        family = "Stealgen"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "10"
        strings_accuracy = "High"
    strings:
        $x_1_1 = "Grabber" ascii //weight: 1
        $x_1_2 = "Amex Card" ascii //weight: 1
        $x_1_3 = "Mastercard" ascii //weight: 1
        $x_1_4 = "PK11SDR_Decrypt" ascii //weight: 1
        $x_1_5 = "\\Google\\Chrome\\User Data\\" ascii //weight: 1
        $x_1_6 = "encryptedPassword" ascii //weight: 1
        $x_1_7 = "Cookies" ascii //weight: 1
        $x_1_8 = "CreditCards" ascii //weight: 1
        $x_1_9 = "\\Screen." ascii //weight: 1
        $x_1_10 = "SELECT ExecutablePath, ProcessID FROM Win32_Process" ascii //weight: 1
        $x_1_11 = "ExploitDirectory" ascii //weight: 1
        $x_1_12 = "ExpYear" ascii //weight: 1
        $x_1_13 = "A310Logger" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (10 of ($x*))
}
Known malware which is associated with this threat:
Filename: start.exe
416e0a8dcc571341da149109a17826c645f55ac3fd1eb2eab31098abb83af172
08/01/2026
→VirusTotal↓Download Sample
Filename: Build.exe
0d6f87aa1826205087affc7248276844f30898daa0eabad676c549459b8e8722
09/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system from the network, perform a full system scan with updated antivirus/EDR, and then reset all passwords for accounts whose credentials might have been stored in web browsers on the compromised machine. Monitor financial accounts for suspicious activity and educate users on phishing threats.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 09/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊