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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.HX!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:HX
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 a Mirai malware variant, specifically 'Mirai.HX', targeting Linux systems. It functions as a backdoor, granting unauthorized remote access and control over the compromised device. The primary objective is likely to enroll the system into a botnet 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_HX_2147909857_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.HX!MTB"
        threat_id = "2147909857"
        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 = {85 2c 20 08 a0 10 80 01 03 03 42 83 82 10 61 0a 80 a4 00 01 12 bf ff f2 92 07 bf f7}  //weight: 1, accuracy: High
        $x_1_2 = {90 10 00 11 92 10 00 10 7f ff ff 94 94 10 20 80 80 a2 20 00 04 80 00 07 94 10 00 08}  //weight: 1, accuracy: High
        $x_1_3 = {94 10 20 01 7f ff ff a6 90 10 00 11 80 a2 20 01 02 80 00 05 c2 4f bf f7}  //weight: 1, accuracy: High
        $x_1_4 = {92 07 bf e4 7f ff ff ad 94 10 20 10 a0 92 20 00 36 80 00 0a}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: dlr.spc
724d3bc953ebe1ccf8ee7f880eb52491db3dd37c471da1435c99108b1f36448c
15/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected Linux system from the network. Conduct a thorough full system scan using an updated antivirus or EDR solution to remove the Mirai backdoor. Change all system and service credentials, and apply all available security patches to prevent re-infection and mitigate exploited vulnerabilities.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 15/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊