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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.CN!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:CN
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 Linux/Mirai botnet variant identified as 'CN', which functions as a backdoor. This malware typically targets Linux-based IoT devices and servers to enroll them 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_CN_2147823188_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.CN!MTB"
        threat_id = "2147823188"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Mirai"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "1"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {80 71 91 e7 03 40 d7 e7 05 40 24 e0 03 40 c7 e7 80 71 91 e7 03 40 d7 e7 0c 40 24 e0 03 40 c7 e7 80 71 91 e7 03 40 d7 e7 0e 40 24 e0 03 40 c7 e7 80 71 91 e7 03 40 d7 e7 02 40 24 e0 03 40 c7 e7 01 30 83 e2}  //weight: 1, accuracy: High
        $x_1_2 = {f7 03 00 2a a0 02 40 f9 96 02 80 52 f3 c3 02 91 78 19 00 94 c1 02 00 4b a0 02 40 f9 f4 0a c1 1a 94 de 01 1b 73 19 00 94 14 00 14 0b e0 03 13 aa e1 03 14 2a a3 0e 00 94 a0 02 40 f9 e1 03 13 aa 7f ca 34 38}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (1 of ($x*))
}
Known malware which is associated with this threat:
Filename: bot.arm
9b847a1f53ecafb25c6afaf25dc4e343ff2980b360b82cbb80e39953e913f2a4
17/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected Linux system from the network to prevent further compromise. Perform a full system scan with an updated anti-malware solution, remove the detected threat, and identify and close any open ports or services that may have been exploited. Ensure all system software and credentials are up to date and strong.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 17/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊