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

Backdoor:Linux/Gafgyt.DC!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:Linux/Gafgyt.DC!MTB
Classification:
Type:Backdoor
Platform:Linux
Family:Gafgyt
Detection Type:Concrete
Known malware family with identified signatures
Variant:DC
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 Gafgyt

Summary:

Backdoor:Linux/Gafgyt.DC!MTB is a Linux-based malware that compromises systems to incorporate them into a botnet. The infected device is then controlled remotely to participate in coordinated Distributed Denial-of-Service (DDoS) attacks, such as TCP and UDP floods.

Severity:
Medium
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Gafgyt_DC_2147904708_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Gafgyt.DC!MTB"
        threat_id = "2147904708"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Gafgyt"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "3"
        strings_accuracy = "High"
    strings:
        $x_1_1 = "attack_parser" ascii //weight: 1
        $x_1_2 = "tcp_flood" ascii //weight: 1
        $x_1_3 = "udpplain_flood" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: arm6
1ba51b481413f35cda4b682af825344686c521fb4da6709a13b85ff2ac6b3637
04/12/2025
→VirusTotal↓Download Sample
Filename: i686
259acbf6cbc016bc1708b9112af4ac62c2e82a147c5181d39bafae8cec1b6459
04/12/2025
→VirusTotal↓Download Sample
Filename: x86
b6bf594139135f9c6293b38482992cc5838da5f3a08c80a45746b7bf99226f50
04/12/2025
→VirusTotal↓Download Sample
Filename: arm7
3fe4b6d70c7a65fe7b10c0cd67f7b5bec8a6d65e79beb7151a1268355e258c7f
04/12/2025
→VirusTotal↓Download Sample
Filename: arm5
f6a19083cd6d83d996bcaf7fe9a01677b9b50369271b01157602940db2f98e34
04/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected Linux system or WSL environment from the network to prevent C2 communication. Use security software to quarantine and remove the malicious file. Investigate the root cause, check for persistence, and rotate all credentials on the compromised system.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 02/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊