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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.EZ!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:EZ
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 is the Mirai.EZ variant, a Linux-based backdoor detected through behavioral analysis (!MTB). It allows attackers to gain remote control over compromised Linux devices, typically enrolling them into a botnet to launch Distributed Denial of Service (DDoS) attacks.

Severity:
Medium
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_EZ_2147901585_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.EZ!MTB"
        threat_id = "2147901585"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Mirai"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "4"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {10 c0 00 09 00 80 10 21 00 86 30 21 90 a2 00 00 00 00 00 00 a0 82 00 00 24 84 00 01 14 86 ff fb 24 a5 00 01 00 80 10 21 03 e0 00 08}  //weight: 1, accuracy: High
        $x_1_2 = "wabjtam" ascii //weight: 1
        $x_1_3 = "beardropper" ascii //weight: 1
        $x_1_4 = "/bin/busybox" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: harm6
21821fb4e8d9ad7830f7027f1c0ec343502a82d81b87f06810a4f001b4d8f914
20/01/2026
→VirusTotal↓Download Sample
Filename: harm7
d3d5456cd4acb3b572b1e3e52e4e090bcc1f40118b1db478d218380001406837
20/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the infected Linux device, perform a full system scan to remove the malware, apply all available security patches, and reset any compromised credentials. Implement network segmentation and firewall rules to block known Mirai C2 communication and monitor for unusual network activity.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 20/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊