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

Trojan:MSIL/DCRat.J!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:MSIL/DCRat.J!MTB
Classification:
Type:Trojan
Platform:MSIL
Family:DCRat
Detection Type:Concrete
Known malware family with identified signatures
Variant:J
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 DCRat

Summary:

Trojan:MSIL/DCRat.J!MTB is a concrete detection of a Remote Access Trojan (RAT) specifically targeting systems running the .NET framework. This sophisticated malware grants attackers full remote control over the compromised machine, enabling activities like surveillance, data exfiltration, and execution of arbitrary commands. The detection utilizes both static signatures and machine learning behavioral analysis for high confidence.

Severity:
High
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Trojan_MSIL_DCRat_J_2147900129_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:MSIL/DCRat.J!MTB"
        threat_id = "2147900129"
        type = "Trojan"
        platform = "MSIL: .NET intermediate language scripts"
        family = "DCRat"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "6"
        strings_accuracy = "High"
    strings:
        $x_2_1 = {08 09 20 ff 00 00 00 9c 09 17 58 0d 09 08 8e 69 32}  //weight: 2, accuracy: High
        $x_2_2 = {25 17 58 13 0a 91 08 61 d2 9c 09 17 5f 17}  //weight: 2, accuracy: High
        $x_1_3 = "GetDelegateForFunctionPointer" ascii //weight: 1
        $x_1_4 = "get_EntryPoint" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: Zapret-Fix.exe
74a8104dc97f3709ba4176bff6f79b57056ed371a57cbd9337ed9fa61bb64ec4
09/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system from the network to prevent further compromise or lateral movement. Perform a comprehensive full system scan using an updated antivirus solution to thoroughly remove the DCRat Trojan and any associated malicious components. Additionally, review and strengthen network perimeter defenses, apply all security updates, and educate users on recognizing phishing attempts.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 09/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊