user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:Win64/Rozena.EM!MTB
Trojan:Win64/Rozena.EM!MTB - Windows Defender threat signature analysis

Trojan:Win64/Rozena.EM!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win64/Rozena.EM!MTB
Classification:
Type:Trojan
Platform:Win64
Family:Rozena
Detection Type:Concrete
Known malware family with identified signatures
Variant:EM
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 64-bit Windows platform, family Rozena

Summary:

This threat is a Trojan from the Rozena malware family, detected on 64-bit Windows systems through behavioral analysis. Rozena is known to create backdoors, enabling attackers to gain remote control, steal sensitive information, and download additional malicious payloads.

Severity:
Medium
VDM Static Detection:
No specific strings found for this threat
YARA Rule:
rule Trojan_Win64_Rozena_EM_2147889023_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:Win64/Rozena.EM!MTB"
        threat_id = "2147889023"
        type = "Trojan"
        platform = "Win64: Windows 64-bit platform"
        family = "Rozena"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "6"
        strings_accuracy = "High"
    strings:
        $x_3_1 = {48 c7 44 24 30 00 00 00 00 c7 44 24 28 00 00 00 00 c7 44 24 20 03 00 00 00 41 b9 00 00 00 00 41 b8 01 00 00 00 ba 00 00 00 80}  //weight: 3, accuracy: High
        $x_3_2 = {48 c7 44 24 28 00 00 00 00 c7 44 24 20 00 00 00 00 41 b9 00 00 00 00 41 b8 02 00 00 01 ba 00 00 00 00 48 89 c1}  //weight: 3, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: smNoGPU.malware
7a1ce7981617497fe17c998698146437831520e9ab4dd5c454097ccf061f093e
14/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
1. Isolate the affected machine from the network immediately. 2. Use Windows Defender to perform a full system scan and remove the detected threat. 3. Change passwords for all accounts accessed from the machine and review system logs for signs of further compromise or data exfiltration.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 14/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊