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

Backdoor:Linux/Gafgyt.AX!xp - Windows Defender Threat Analysis

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

Summary:

Backdoor:Linux/Gafgyt.AX!xp is a variant of the Gafgyt botnet malware that targets Linux systems, particularly IoT devices. It compromises the device, incorporates it into a botnet, and uses it to participate in large-scale Distributed Denial of Service (DDoS) attacks.

Severity:
High
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Gafgyt_AX_2147816314_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Gafgyt.AX!MTB"
        threat_id = "2147816314"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Gafgyt"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "4"
        strings_accuracy = "High"
    strings:
        $x_1_1 = "STDPPS" ascii //weight: 1
        $x_1_2 = "SYNACK" ascii //weight: 1
        $x_1_3 = "LOLNOGTFO" ascii //weight: 1
        $x_1_4 = "HTTPHEX" ascii //weight: 1
        $x_1_5 = "npxXoudifFeEgGaACScs" ascii //weight: 1
        $x_1_6 = "TSource Engine Query + /x54/x53/x6f/x75/x72/x63/x65/x20/x45/x6e/x67/x69/x6e/x65/x20/x51/x75/x65/x72/x79" ascii //weight: 1
        $x_1_7 = "telnetadmin" ascii //weight: 1
        $x_1_8 = "7ujMko0admin" ascii //weight: 1
        $x_1_9 = "TCPSLAM" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (4 of ($x*))
}
Known malware which is associated with this threat:
Filename: 586
b56ee9e28a9ca29d74d6702e50dadcaaa3d49eb36fb95d0762f6f48313b582ca
12/12/2025
→VirusTotal↓Download Sample
Filename: mipsel
b3b8b48df762d44ae2a768425ef999e1474466bc9a5b1555dc328ffc6eb321fd
12/12/2025
→VirusTotal↓Download Sample
Filename: m68k
128b0f7beb92bc995c9a75f14d588ea2d7f9b63a4968f62c82211959598c6d99
12/12/2025
→VirusTotal↓Download Sample
Filename: sh4
9a3dbaf584fd022b6eb31bf31f14be7a78151d916c13559b6bdda0aa4af6234b
12/12/2025
→VirusTotal↓Download Sample
Filename: co
f3806eb073c90121e7fca29463402283b2247cdc5c853b30c8bc703bb7ea4422
12/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the compromised Linux device from the network immediately. Remove the detected malware and investigate for any persistence mechanisms. Change all default or weak credentials on the device and apply the latest security patches to prevent reinfection.
=== 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:~$ ▊