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

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

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.ET!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:ET
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 Backdoor:Linux/Mirai.ET, a variant of the Mirai botnet family. It establishes a backdoor on compromised Linux-based systems, enabling remote control and participation in Distributed Denial of Service (DDoS) attacks, identified through machine learning behavioral analysis.

Severity:
High
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Mirai_ET_2147915799_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.ET!MTB"
        threat_id = "2147915799"
        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 = {88 1d 00 04 81 3d 00 00 3b bd 00 05 98 0b 00 14 91 2b 00 04 91 2b 00 10 b1 4b 00 00 39 6b 00 18 42 ?? ?? ?? 1d 3a ff fb 7d 3e 4a 14 3b 89 ff fa}  //weight: 1, accuracy: Low
        $x_1_2 = {34 1c ff ff 7c 09 03 a6 41 ?? ?? ?? 88 1d 00 01 39 3d 00 01 98 03 00 04 42 ?? ?? ?? 7d 69 02 a6 8b e9 00 01 38 89 00 01 3b ab ff ff 7f 9d f8 00 41 9c 00 a8}  //weight: 1, accuracy: Low
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: Aqua.ppc
b1957d2808a90447f91094e7cc54de0d1993d61a17575c20b536310c4bf24e5e
22/01/2026
→VirusTotal↓Download Sample
Filename: Aqua.ppc
76191b6265543d945ee8d727eacb8113f79dbea59e14c7479caaced66e0df036
20/01/2026
→VirusTotal↓Download Sample
Filename: Aqua.ppc
5f2219a83a97c60869fc2558f78173b936d1b70f824066b08ccc4115f65c809d
20/01/2026
→VirusTotal↓Download Sample
Filename: .p
ff7f18f4d1b85a174a42324d07b819dc269cc1a434090a733de29251a19aa0b2
05/01/2026
→VirusTotal↓Download Sample
Filename: ppc
ecc177e3fb1ecc1c03df421e43e3131f3b818a85a0751638ed7a00304ebdd049
19/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the compromised Linux system. Perform a full system scan to remove the Mirai malware, then change all default/weak credentials, update firmware, and strengthen network security measures like firewall rules to prevent reinfection.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 16/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊