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

Trojan:Win64/Fragtor.MR!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win64/Fragtor.MR!MTB
Classification:
Type:Trojan
Platform:Win64
Family:Fragtor
Detection Type:Concrete
Known malware family with identified signatures
Variant:MR
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 Fragtor

Summary:

Trojan:Win64/Fragtor.MR!MTB is a Windows 64-bit Trojan from the Fragtor family. This concrete detection, reinforced by specific code patterns and behavioral analysis, indicates a severe threat designed for unauthorized access, data theft, or system compromise.

Severity:
High
VDM Static Detection:
Relevant strings associated with this threat:
 - Fe3048124832f0cef883941e6035e2bbbc237.exe (PEHSTR_EXT)
YARA Rule:
rule Trojan_Win64_Fragtor_MR_2147947781_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:Win64/Fragtor.MR!MTB"
        threat_id = "2147947781"
        type = "Trojan"
        platform = "Win64: Windows 64-bit platform"
        family = "Fragtor"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "15"
        strings_accuracy = "High"
    strings:
        $x_10_1 = {48 8b 45 f0 48 8d 50 01 48 89 55 f0 0f b6 10 48 8b 45 f8 48 8d 48 01 48 89 4d f8 88 10 48 83 6d 20 01 48 83 7d 20}  //weight: 10, accuracy: High
        $x_5_2 = {89 45 fc 48 8b 45 10 48 8d 50 01 48 89 55 10 0f b6 00 0f b6 c0 89 45 f8 83 7d f8 00 0f 95 c0 84 c0}  //weight: 5, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: 8uhqn.dll
8174e9a6f26aa75242bc7e8f6f2fd29e6cf6fbac91f70174c0ffd329ea707bd8
04/01/2026
→VirusTotal↓Download Sample
685669355fbe1bee2b998a9050922338f5335ad48c3030fcafb0f301a5f2eb32
03/01/2026
→VirusTotal↓Download Sample
Filename: cnc.exe
ddfa43064097e71896ee6d75af3bc211bdeb847da40849c2789339c06b048771
25/12/2025
→VirusTotal↓Download Sample
Filename: bc5543b39d89cda6832706948945f567.exe
01c29e84ad1a5fc1f2d16a93fee1c6386aecef1a99153eccaddbca54549befd3
25/12/2025
→VirusTotal↓Download Sample
Filename: bbfdb7f47559bfde4090b7c113c9d274.exe
500896fbd343a7c713ddce1815d9827606edae3f81abf0fba68cb6b163ce0871
25/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected system to prevent further spread. Perform a full system scan with updated antivirus software and remove all detected malicious files. Investigate for persistence mechanisms, potential data compromise, and update all system software and critical credentials as necessary.
=== 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:~$ ▊