user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:MSIL/AveMaria.NEEC!MTB
Trojan:MSIL/AveMaria.NEEC!MTB - Windows Defender threat signature analysis

Trojan:MSIL/AveMaria.NEEC!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:MSIL/AveMaria.NEEC!MTB
Classification:
Type:Trojan
Platform:MSIL
Family:AveMaria
Detection Type:Concrete
Known malware family with identified signatures
Variant:NEEC
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: Trojan - Appears legitimate but performs malicious actions for .NET (Microsoft Intermediate Language) platform, family AveMaria

Summary:

Trojan:MSIL/AveMaria.NEEC!MTB is a variant of the AveMaria RAT (Remote Access Trojan) detected via machine learning behavioral analysis. It is likely delivered as or masquerading as a legitimate application (mini calculator) and exhibits behavior consistent with typical AveMaria RAT functionality like remote access, keylogging, and data exfiltration.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - mini calculator.exe (PEHSTR_EXT)
 - mini_calculator.My (PEHSTR_EXT)
 - GetExecutingAssembly (PEHSTR_EXT)
YARA Rule:
rule Trojan_MSIL_AveMaria_NEEC_2147839966_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:MSIL/AveMaria.NEEC!MTB"
        threat_id = "2147839966"
        type = "Trojan"
        platform = "MSIL: .NET intermediate language scripts"
        family = "AveMaria"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "21"
        strings_accuracy = "High"
    strings:
        $x_5_1 = "bbff2a71-7db6-4243-8acb-d38c32bc310d" ascii //weight: 5
        $x_5_2 = "kLjw4iIsCLsZtxc4lksN0j" ascii //weight: 5
        $x_5_3 = "WindowsDataC.exe" wide //weight: 5
        $x_2_4 = "mini calculator.exe" ascii //weight: 2
        $x_2_5 = "mini_calculator.My" ascii //weight: 2
        $x_1_6 = "Invoke" ascii //weight: 1
        $x_1_7 = "GetExecutingAssembly" ascii //weight: 1
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: imgs.exe
0e7aa42d81a35200a205b426dd88c0c487b785851a081bedd9978ced12fb09de
14/01/2026
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected system immediately. Perform a full malware scan with updated antivirus definitions. Analyze network traffic for suspicious connections and review recently opened files, removing the malicious file (mini calculator.exe) from the system and network.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 14/01/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊