user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Backdoor:MSIL/Zegost.GG!MTB
Backdoor:MSIL/Zegost.GG!MTB - Windows Defender threat signature analysis

Backdoor:MSIL/Zegost.GG!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Backdoor:MSIL/Zegost.GG!MTB
Classification:
Type:Backdoor
Platform:MSIL
Family:Zegost
Detection Type:Concrete
Known malware family with identified signatures
Variant:GG
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 .NET (Microsoft Intermediate Language) platform, family Zegost

Summary:

This threat is a backdoor from the Zegost malware family, providing an attacker with remote control over the compromised system. Technical indicators suggest it can spread to other machines, capture screenshots or keystrokes, and perform low-level disk operations, posing a significant risk of data theft and further network compromise.

Severity:
High
VDM Static Detection:
Relevant strings associated with this threat:
 - svp7. (PEHSTR_EXT)
 - %s\admin$\hackshen.exe (PEHSTR_EXT)
 - [Print Screen] (PEHSTR_EXT)
 - \\.\PHYSICALDRIVE0 (PEHSTR_EXT)
YARA Rule:
rule Backdoor_MSIL_Zegost_GG_2147782760_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Backdoor:MSIL/Zegost.GG!MTB"
        threat_id = "2147782760"
        type = "Backdoor"
        platform = "MSIL: .NET intermediate language scripts"
        family = "Zegost"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "28"
        strings_accuracy = "High"
    strings:
        $x_10_1 = "svp7." ascii //weight: 10
        $x_10_2 = "%s\\admin$\\hackshen.exe" ascii //weight: 10
        $x_1_3 = "VMware" ascii //weight: 1
        $x_1_4 = "[CLEAR]" ascii //weight: 1
        $x_1_5 = "[Print Screen]" ascii //weight: 1
        $x_1_6 = "angel" ascii //weight: 1
        $x_1_7 = "xpuser" ascii //weight: 1
        $x_1_8 = "McAfee" ascii //weight: 1
        $x_1_9 = "BitDefender" ascii //weight: 1
        $x_1_10 = "password" ascii //weight: 1
        $x_1_11 = "\\\\.\\PHYSICALDRIVE0" ascii //weight: 1
        $x_1_12 = "SeDebugPrivilege" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (
            ((2 of ($x_10_*) and 8 of ($x_1_*))) or
            (all of ($x*))
        )
}
Known malware which is associated with this threat:
243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d
07/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected host from the network to prevent lateral movement. Perform a full antivirus scan to remove the threat, then investigate for persistence mechanisms and signs of data exfiltration. Reset all user credentials that were used on the compromised machine.
=== 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:~$ ▊