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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.FE!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:FE
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 variant of the Mirai botnet malware, which targets Linux-based systems and IoT devices. The malware creates a backdoor, adding the infected system to a botnet used for launching Distributed Denial-of-Service (DDoS) attacks. The '!MTB' suffix indicates this was identified by a machine learning behavioral model.

Severity:
Medium
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_FE_2147913993_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.FE!MTB"
        threat_id = "2147913993"
        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 = {30 84 00 ff 18 ?? ?? ?? 30 c6 00 ff ?? a2 00 04 00 00 00 00 10 ?? ?? ?? 24 a3 00 08 10 ?? ?? ?? 00 00 40 21 ?? 62 00 04 00 00 00 00 10 ?? ?? ?? 24 63 00 08}  //weight: 1, accuracy: Low
        $x_1_2 = {00 04 18 c0 00 04 11 40 00 43 10 23 00 5e 28 21 8f a2 00 68 00 04 18 80 00 62 18 21 ?? a2 00 14 8c 71 00 00 2c 42 00 20 14 40 00 47 26 32 00 14 8f a3 00 28 24 02 ff ff}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: frost.mips
ac4794802b4e7fd5bf09b555375dd0095347333fb4854e42772225b7a8f20c7d
12/12/2025
→VirusTotal↓Download Sample
Filename: mips
64e3972234d9b7b0ed463da11209e7568cdc80f3610165f5523ac5efe1136ce0
10/12/2025
→VirusTotal↓Download Sample
Filename: mips
5bb6555cfd3e08d19dfe8e568e6115e3d44b756a92a643ce09299c0b3bf80f3c
10/12/2025
→VirusTotal↓Download Sample
Filename: mips
d84c131e28a4ade0202638b61b584623c97643b7a579b1ee0a6a6b8dbbeb3453
08/12/2025
→VirusTotal↓Download Sample
Filename: mips
65fdc9cc54e912620a38ceec6f23b32b429e4ef01394853162aef2622f3a5d98
08/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected system from the network immediately. Identify the source of the Linux file (e.g., WSL, container, downloaded file) and ensure its deletion. If this threat was active on a device, re-flash its firmware and change all default credentials to strong, unique passwords.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 08/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊