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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.GN!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:GN
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 detection identifies a backdoor associated with the Mirai botnet, a threat targeting Linux-based Internet of Things (IoT) devices. Once infected, the device is controlled by an attacker and used to participate in large-scale Distributed Denial of Service (DDoS) attacks. The '!MTB' suffix indicates this detection is based on machine learning behavioral analysis.

Severity:
Medium
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_GN_2147906385_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.GN!MTB"
        threat_id = "2147906385"
        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 = "High"
    strings:
        $x_1_1 = {e6 2f 22 4f 07 d0 f4 7f f3 6e 42 2e 51 1e 66 e4 62 1e 03 e5 0b 40 e3 66 0c 7e e3 6f 26 4f f6 6e}  //weight: 1, accuracy: High
        $x_1_2 = {53 61 63 67 13 66 04 d1 e6 2f 43 65 f3 6e 04 e4 e3 6f f6 6e}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: dlr.sh4
09b4c90f5b3e7a45cae95bba99cdd6d44d10db494b38bead1c47cedeb71850f2
06/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the compromised Linux device from the network immediately. Re-flash the device with a known-good firmware image from the manufacturer and change all default credentials to strong, unique passwords to prevent reinfection.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 06/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊