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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.GV!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:GV
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.GV!MTB is a concrete detection of a Mirai variant targeting Linux systems. This malware establishes a backdoor to enroll the compromised device into a botnet, primarily for launching distributed denial-of-service (DDoS) attacks against other targets.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_GV_2147906728_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.GV!MTB"
        threat_id = "2147906728"
        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 = {80 10 12 00 21 10 50 00 02 00 43 2a 39 ?? ?? ?? 00 00 40 ac 54 00 a3 8f 01 00 02 24 3d ?? ?? ?? 02 00 02 24 12 ?? ?? ?? 01 00 11 24 98 80 99 8f 00 00 05 8e 4c 00 a4 8f 09 f8 20 03}  //weight: 1, accuracy: Low
        $x_1_2 = {0f 00 84 30 80 18 03 00 2b 10 02 00 c0 20 04 00 25 18 64 00 40 10 02 00 2b 28 05 00 25 28 a3 00 25 10 c2 00 25 10 45 00 02 00 02 a1 18 00 e2 8c 00 00 00 00 02 ?? ?? ?? 80 ff 03 24 21 18 00 00}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: mpsl
9cd058aa7d572fb8e304619d808d2a5d26ac42580c40080c3ac0623a54e2a696
09/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
1. Immediately isolate the infected Linux device from the network to prevent further compromise or participation in attacks. 2. Perform a full system scan with up-to-date antivirus/antimalware software and remove all detected threats. 3. Change all default or weak credentials on affected devices, enforce strong, unique passwords, and enable SSH key-based authentication where possible. 4. Apply all available security patches, firmware updates, and disable unnecessary services to close potential exploit vectors. 5. Implement network segmentation and firewall rules to restrict inbound and outbound connections for IoT devices to only essential services.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 09/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊