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

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

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

This threat is a variant of the Gafgyt botnet malware, specifically targeting Linux-based systems, often IoT devices. It functions as a backdoor, allowing a remote attacker to control the infected device. Its primary purpose is to launch Distributed Denial of Service (DDoS) attacks and spread to other vulnerable systems.

Severity:
Critical
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Backdoor_Linux_Gafgyt_L_2147793957_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:Linux/Gafgyt.L!xp"
        threat_id = "2147793957"
        type = "Backdoor"
        platform = "Linux: Linux platform"
        family = "Gafgyt"
        severity = "Critical"
        info = "xp: an internal category used to refer to some threats"
        signature_type = "SIGNATURE_TYPE_ELFHSTR_EXT"
        threshold = "3"
        strings_accuracy = "High"
    strings:
        $x_1_1 = "attack_parsing" ascii //weight: 1
        $x_1_2 = "scanner_kill" ascii //weight: 1
        $x_1_3 = "killer_kill_by_cmdline" ascii //weight: 1
        $x_1_4 = "tcpbypass" ascii //weight: 1
        $x_1_5 = "udpbypass" ascii //weight: 1
        $x_1_6 = "scanner_pause_process" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (3 of ($x*))
}
Known malware which is associated with this threat:
Filename: ecco.arm7
15b65716d6044566c43046a0dfff7cb699890dd5ea4b8bc120b72e38d3f7394e
05/12/2025
→VirusTotal↓Download Sample
Filename: ecco.arm7
0133bca03aaf8c4ea5dcbba64af8525b3b0a7648bc2529dc0bd0d5f0c760d359
03/12/2025
→VirusTotal↓Download Sample
Filename: ecco.arm7
bbe3c8fa5a5d576828c2f9caf17d4e3e98d77e3870f01044b4afe180f49e2656
03/12/2025
→VirusTotal↓Download Sample
Filename: morte.arm7
04e5a588df2f800e1e4c362c5b7b8d95e8aea5362a3a019a9f9e91f06e0b5b93
02/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected Linux device from the network to prevent further spread or participation in attacks. Identify and terminate the malicious process, then delete the detected file. Change all credentials on the compromised host and consider reimaging the system or performing a factory reset for IoT devices.
=== 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:~$ ▊