user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:Win32/Copak.KAV!MTB
Trojan:Win32/Copak.KAV!MTB - Windows Defender threat signature analysis

Trojan:Win32/Copak.KAV!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win32/Copak.KAV!MTB
Classification:
Type:Trojan
Platform:Win32
Family:Copak
Detection Type:Concrete
Known malware family with identified signatures
Variant:KAV
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 32-bit Windows platform, family Copak

Summary:

This threat is a Trojan from the Copak family, detected by Windows Defender's machine learning behavioral analysis (!MTB). It has been identified based on actions consistent with known malware, such as attempting to download other malicious payloads, steal information, or create a backdoor for remote access.

Severity:
Medium
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Trojan_Win32_Copak_KAV_2147917474_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:Win32/Copak.KAV!MTB"
        threat_id = "2147917474"
        type = "Trojan"
        platform = "Win32: Windows 32-bit platform"
        family = "Copak"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "1"
        strings_accuracy = "Low"
    strings:
        $x_1_1 = {7c 9a 65 00 [0-20] 70 9c 65 00 [0-40] 81 ?? ff 00 00 00 [0-15] 31 [0-50] 81 ?? 92 9c 65 00 0f 8c}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: 0065c0a537222174cec697a13f305158.exe
b4016039bc3d533659cc7367c260cc2545f620288284d403b75e0095fa4ea0cc
03/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected machine from the network immediately. Use Windows Defender to remove the threat, then perform a full system scan to find any related malicious components. Investigate system and network logs for any unauthorized activity and change all user passwords associated with the machine.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 03/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊