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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.IJ!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:IJ
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 indicates a Linux system is infected with a Mirai variant, a notorious malware family known for creating botnets. This specific variant operates as a backdoor, allowing attackers remote control over the compromised device, typically to launch Distributed Denial-of-Service (DDoS) attacks.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_IJ_2147908710_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.IJ!MTB"
        threat_id = "2147908710"
        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 = {00 00 51 e3 01 10 41 e2 0f ?? ?? ?? 01 c0 d0 e4 41 30 4c e2 19 00 53 e3 02 30 d4 e7 41 e0 43 e2 60 c0 8c 93 19 00 5e e3 60 30 83 93 03 00 5c e1 00 20 a0 13 f1 ?? ?? ?? 01 20 82 e2 02 00 55 e1 ee ?? ?? ?? 00 00 66 e0 70 80 bd e8}  //weight: 1, accuracy: Low
        $x_1_2 = {01 30 cc e7 00 20 9e e5 02 30 dc e7 03 30 25 e0 02 30 cc e7 00 10 9e e5 01 30 dc e7 03 30 24 e0 01 30 cc e7 04 20 de e5 01 30 d7 e5 01 c0 8c e2 03 24 82 e1 0c 00 52 e1 e9 ?? ?? ?? f0 80 bd e8}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: arm
2a9d8118cbb9b6c5118c246f8ba4fd9695f1960a267993503871273aa79bb359
06/12/2025
→VirusTotal↓Download Sample
Filename: arm
466b3b43dc5a63283cc9bbce3f77614512cb2358c935ab1fcdae5775a6db6b69
17/11/2025
→VirusTotal↓Download Sample
Filename: arm
02438a83ff2a5aa236601f915d58d8d0d60bf28d1f6bc97e691117ff008bb86e
15/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected Linux system from the network to prevent further compromise and botnet participation. Reboot the device to potentially remove the in-memory malware, then change all default and weak credentials. Patch all system vulnerabilities and update firmware, and implement network segmentation to restrict unauthorized access.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 15/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊