user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:Win64/AgentTesla.GVK!MTB
Trojan:Win64/AgentTesla.GVK!MTB - Windows Defender threat signature analysis

Trojan:Win64/AgentTesla.GVK!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win64/AgentTesla.GVK!MTB
Classification:
Type:Trojan
Platform:Win64
Family:AgentTesla
Detection Type:Concrete
Known malware family with identified signatures
Variant:GVK
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 64-bit Windows platform, family AgentTesla

Summary:

This detection signifies a concrete identification of Trojan:Win64/AgentTesla.GVK, a highly dangerous information-stealing malware family targeting 64-bit Windows systems. AgentTesla is known for its capabilities to exfiltrate sensitive data, credentials, and system information, posing a severe threat to data confidentiality and system integrity.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Trojan_Win64_AgentTesla_GVK_2147952580_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:Win64/AgentTesla.GVK!MTB"
        threat_id = "2147952580"
        type = "Trojan"
        platform = "Win64: Windows 64-bit platform"
        family = "AgentTesla"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "2"
        strings_accuracy = "Low"
    strings:
        $x_2_1 = {41 8b c0 99 f7 ff 3b d7 73 ?? 44 8b d2 46 0f b6 54 16 10 44 3b 41 08 73 ?? 41 8b c0 44 88 54 01 10 41 ff c0 44 3b c3 7c d7}  //weight: 2, accuracy: Low
        $x_2_2 = {4c 8b 09 49 c1 c1 38 4c 03 0a 44 8b d8 4f 33 4c d8 10 4c 89 09 4c 8b 0a 49 c1 c1 03 4c 33 09 4c 89 0a ff c0 44 3b d0 7f d7}  //weight: 2, accuracy: High
    condition:
        (filesize < 20MB) and
        (1 of ($x*))
}
Known malware which is associated with this threat:
Filename: atom.dll
7078964ebd7ca7d1b69d971536e105602377c45a585dcc56a9702fee3c36b695
09/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected system to prevent further compromise. Terminate any associated malicious processes and thoroughly remove the detected file. Conduct a full system scan with updated antivirus/EDR, investigate for persistence mechanisms, and reset all credentials that might have been stored on or accessed from the compromised machine.
=== 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:~$ ▊