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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.HR!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:HR
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 a concrete detection of Backdoor:Linux/Mirai.HR!MTB, a variant of the notorious Mirai botnet specifically targeting Linux systems. This malware acts as a backdoor, granting remote control over the infected device, primarily to launch distributed denial-of-service (DDoS) attacks. Its detection leverages machine learning behavioral analysis (!MTB) to identify active malicious patterns.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_HR_2147908273_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.HR!MTB"
        threat_id = "2147908273"
        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 = {ff c9 83 f9 ff 74 ?? 48 63 d7 0f b6 06 41 3a 04 10 75 ?? ff c7 39 fb 75 ?? 66 ?? e9 ?? ?? ?? ?? 31 f6 bf 16 00 00 00}  //weight: 1, accuracy: Low
        $x_1_2 = {48 c7 44 24 38 00 00 00 00 0f ?? ?? ?? ?? ?? 66 c1 cd 08 66 89 6c 24 2a 44 0f b6 6c 24 27 45 85 ed 0f ?? ?? ?? ?? ?? 41 8d 45 ff 48 8b 6c 24 18 45 31 e4 48 ff c0 48 89 44 24 10}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: mao.x86_64
80e2ffefac43ba12de92a71d3fb462576c6e13618faf4b1162198410a0f8f953
01/02/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the compromised Linux system from the network. Employ an updated antivirus solution to scan and remove the Mirai malware, then thoroughly patch all system vulnerabilities and enforce strong, unique credentials. Implement network segmentation and egress filtering to prevent command-and-control communication and future infections.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 31/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊