user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Backdoor:MSIL/XenoRat.BSA!MTB
Backdoor:MSIL/XenoRat.BSA!MTB - Windows Defender threat signature analysis

Backdoor:MSIL/XenoRat.BSA!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:MSIL/XenoRat.BSA!MTB
Classification:
Type:Backdoor
Platform:MSIL
Family:XenoRat
Detection Type:Concrete
Known malware family with identified signatures
Variant:BSA
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: Backdoor - Provides unauthorized remote access for .NET (Microsoft Intermediate Language) platform, family XenoRat

Summary:

This detection identifies the XenoRat Remote Access Trojan (RAT), a backdoor that gives an attacker full remote control over the infected system. It can be used for data theft, surveillance, and executing arbitrary commands. The detection is based on a high-confidence machine learning model that identified behaviors specific to this malware family.

Severity:
Medium
VDM Static Detection:
Relevant strings associated with this threat:
 - \xeno-rat\Plugins (PEHSTR_EXT)
YARA Rule:
rule Backdoor_MSIL_XenoRat_BSA_2147927609_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:MSIL/XenoRat.BSA!MTB"
        threat_id = "2147927609"
        type = "Backdoor"
        platform = "MSIL: .NET intermediate language scripts"
        family = "XenoRat"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "15"
        strings_accuracy = "High"
    strings:
        $x_10_1 = "xeno rat client" ascii //weight: 10
        $x_5_2 = {1b 30 06 00 84 0b 00 00 10 00 00 11 12 00 14 7d 04 00 00 04 14 0b 72 64 05 00 70 0c 08 18 28 32 00 00 0a 28 33 00 00 0a 16 28 34 00 00 0a 26 21 00 60 40 00 00 00 00 00 e0 0d 20 b7 50 00 00 13 04 11 04 8d}  //weight: 5, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: Banking_info.exe
60143ebe7e289b139850c52380249e45c0c2452a2c068af94580de3bf5c0608d
05/12/2025
→VirusTotal↓Download Sample
5e84212896be25f411d5185406286fe5ee898afe757623a6acbf736c20c3e838
09/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected machine from the network. Run a full antivirus scan to remove all malicious components. Investigate the initial access vector, check for persistence mechanisms, and reset all user credentials on the machine and associated network accounts.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 09/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊