user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Backdoor:Linux/Mirai.HY!MTB
Backdoor:Linux/Mirai.HY!MTB - Windows Defender threat signature analysis

Backdoor:Linux/Mirai.HY!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.HY!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:HY
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 Linux platform, family Mirai

Summary:

Backdoor:Linux/Mirai.HY!MTB is a concrete detection for a Mirai botnet variant specifically targeting Linux-based devices. This malware establishes a backdoor to gain remote control over the compromised system, subsequently enrolling it into a botnet primarily used for launching distributed denial-of-service (DDoS) attacks.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_HY_2147909858_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.HY!MTB"
        threat_id = "2147909858"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Mirai"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "2"
        strings_accuracy = "Low"
    strings:
        $x_1_1 = {83 fe 01 77 ee 75 08 48 0f be 07 ?? ?? ?? ?? 48 0f b7 d1 48 c1 e9 10 48 01 ca 48 89 d0 48 c1 e8 10 48 01 d0 f7 d0 0f b7 c0 c3}  //weight: 1, accuracy: Low
        $x_1_2 = {41 55 41 89 d5 41 54 45 31 e4 55 53 48 83 ec 08 8b 5f 0c 8b 6f 10 eb 0d}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: x86_64
001c9c983afed1489f2a681b2d4045ae6120ecca1640045068d68d443891168b
14/12/2025
→VirusTotal↓Download Sample
Filename: x86_64
087a9a01852957585c47e3116f2997ea0d393f0884ff3852a5b9e7af533c395b
14/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected Linux device from the network. Remove the detected malware file and perform a full system scan with updated antivirus definitions. Apply all available security patches for the operating system and any running services, and enforce strong, unique passwords for all user accounts and remote access services. Implement network segmentation and monitor network traffic for any unusual outbound connections or DDoS activity.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 14/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊