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

Backdoor:Linux/Mirai.BK!xp - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Mirai.BK!xp
Classification:
Type:Backdoor
Platform:Linux
Family:Mirai
Detection Type:Concrete
Known malware family with identified signatures
Variant:BK
Specific signature variant within the malware family
Suffix:!xp
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Backdoor - Provides unauthorized remote access for Linux platform, family Mirai

Summary:

Backdoor:Linux/Mirai.BK!xp is a concrete detection for a specific variant of the Mirai botnet malware targeting Linux systems. This threat functions as a backdoor, allowing attackers to gain unauthorized control over compromised devices, primarily to enlist 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_BK_2147819509_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Mirai.BK!xp"
        threat_id = "2147819509"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Mirai"
        severity = "Critical"
        info = "xp: an internal category used to refer to some threats"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "2"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {30 43 e2 19 00 53 e3 0c 20 c9 97 05 3a 8d 92 6c}  //weight: 1, accuracy: High
        $x_1_2 = {30 a0 e3 a8 35 46 e5 ac 05 16 e5 e6 2a 00 eb 00 30 e0 e3 ac 35 06 e5 40 20}  //weight: 1, accuracy: High
        $x_1_3 = {3c 8d e2 70 30 83 e2 03 20 8c e0 a4 30 12 e5 33 31 a0 e1 01 00 13}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (2 of ($x*))
}
Known malware which is associated with this threat:
Filename: Fantazy.arm6
3db589e12dbe9231853afa90ce893c21de9d8736892620111a73ee64d785b451
27/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected Linux system from the network. Identify and terminate malicious processes, then thoroughly scan and remove all associated malware files. Apply all available security patches, strengthen credentials, and review network logs for signs of further compromise or lateral movement. Implement robust network segmentation and intrusion prevention systems.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 27/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊