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

Trojan:MSIL/AgentTesla.LQL!MTB - Windows Defender Threat Analysis

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

Summary:

This detection identifies a variant of AgentTesla, a .NET-based information-stealing trojan. This malware is designed to capture sensitive data, such as keystrokes and login credentials from web browsers and email clients, and exfiltrate it to an attacker's server.

Severity:
Medium
VDM Static Detection:
Relevant strings associated with this threat:
 - AesCryptoServiceProvider (PEHSTR_EXT)
YARA Rule:
rule Trojan_MSIL_AgentTesla_LQL_2147805639_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:MSIL/AgentTesla.LQL!MTB"
        threat_id = "2147805639"
        type = "Trojan"
        platform = "MSIL: .NET intermediate language scripts"
        family = "AgentTesla"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "2"
        strings_accuracy = "Low"
    strings:
        $x_1_1 = {16 13 04 2b 21 02 08 09 11 04 28 ?? ?? ?? 06 28 ?? ?? ?? 0a 13 05 07 06 11 05 28 ?? ?? ?? 0a 9c 11 04 17 58 13 04 11 04 17 32 da}  //weight: 1, accuracy: Low
        $x_1_2 = "BSTRMarshaler" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: svchost.scr
26e54c0973cd4de1ff00a250344618416034042479a306a337d5f9587cafaf4f
17/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected machine from the network immediately. Use an updated antivirus solution to quarantine and remove the threat. Reset all passwords for accounts used on the machine and perform a full system scan to check for any remaining artifacts.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 17/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊