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

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

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

This threat is a variant of the Mirai botnet malware, which targets Linux-based systems, primarily IoT devices. The malware creates a backdoor, allowing the compromised device to be controlled remotely and used in large-scale Distributed Denial-of-Service (DDoS) attacks. The detection is based on a combination of machine learning behavioral analysis and specific strings found in the malicious file.

Severity:
High
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_DZ_2147852954_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.DZ!MTB"
        threat_id = "2147852954"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Mirai"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "3"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {89 c2 83 ee 02 c1 e2 0b 31 c2 44 89 c0 c1 e8 13 89 d1 44 31 c0 c1 e9 08 31 c2 31 d1 66 89 0f 48 83 c7 02}  //weight: 1, accuracy: High
        $x_1_2 = "/usr/compress/bin/" ascii //weight: 1
        $x_1_3 = "mnt/mtd/app/gui" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: bot.x86_64
c21f72e3fc6ef22d22a86b45157462c22da0ed3eaeaa126db3a283912d81562e
05/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected device from the network immediately to prevent it from participating in attacks. Remove the detected malicious file and terminate its process. Change all default or weak credentials on the device to strong, unique passwords and update its firmware to the latest version to prevent reinfection.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 05/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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