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

Trojan:MSIL/XWorm.GPB!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:MSIL/XWorm.GPB!MTB
Classification:
Type:Trojan
Platform:MSIL
Family:XWorm
Detection Type:Concrete
Known malware family with identified signatures
Variant:GPB
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 .NET (Microsoft Intermediate Language) platform, family XWorm

Summary:

This is a concrete detection of Trojan:MSIL/XWorm.GPB!MTB, a variant of the XWorm Trojan family targeting .NET applications. The malware is designed to establish persistence on the compromised system by creating scheduled tasks and modifying Windows startup entries.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - create /f /sc minute (PEHSTR_EXT)
 - SOFTWARE\Microsoft\Windows\CurrentVersion\Run (PEHSTR_EXT)
YARA Rule:
rule Trojan_MSIL_XWorm_GPB_2147906996_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:MSIL/XWorm.GPB!MTB"
        threat_id = "2147906996"
        type = "Trojan"
        platform = "MSIL: .NET intermediate language scripts"
        family = "XWorm"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "1"
        strings_accuracy = "Low"
    strings:
        $x_1_1 = {0c 08 17 61 d1 0c 07 08 6f ?? 00 00 0a 26 09 17 58 0d 09 02}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: Arcane.exe
e64ea1919733003e81ccf173f4cb27b02206602ccc21dabed13d6a8e9a62f838
28/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the infected system, perform a full system scan with updated antivirus, and manually review/remove suspicious entries in `SOFTWARE\Microsoft\Windows\CurrentVersion\Run` and scheduled tasks. Consider system re-imaging for complete eradication.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 28/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊