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

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

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

This is a concrete detection of Backdoor:Linux/Gafgyt.CW, a specific variant of the Gafgyt botnet malware. It primarily targets Linux systems, establishing a backdoor for unauthorized access and control, typically to incorporate the system into a botnet for Distributed Denial of Service (DDoS) attacks.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Gafgyt_CW_2147827514_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Gafgyt.CW!MTB"
        threat_id = "2147827514"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Gafgyt"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "2"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {bf 00 2c af be 00 28 03 a0 f0 21 af bc 00 10 af c4 00 30 af c0 00 1c 8f c4 00 30 8f 99 81 78 00}  //weight: 1, accuracy: High
        $x_1_2 = {a2 00 18 8f c4 00 50 00 60 28 21 24 06 00 0a 24 07 00 01 8f 82 80 20 00 00}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: mips
44cbe296b07c24f5d42e872cec62c2c4bd327031b8b40832aeacda1dd0e71051
07/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the compromised Linux system. Perform a full system scan to remove the Gafgyt malware. Patch all operating system and software vulnerabilities, reset credentials for any potentially affected accounts, and review network logs for further compromise indicators. Enhance firewall rules to restrict outbound connections.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 07/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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