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

Trojan:Win64/BazarLoader.ABZR!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win64/BazarLoader.ABZR!MTB
Classification:
Type:Trojan
Platform:Win64
Family:BazarLoader
Detection Type:Concrete
Known malware family with identified signatures
Variant:ABZR
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 BazarLoader

Summary:

This detection identifies Trojan:Win64/BazarLoader.ABZR!MTB, a sophisticated initial access trojan known for deploying additional malware. It utilizes various techniques for execution (e.g., mshta, regsvr32, rundll32, PowerShell), persistence (e.g., scheduled tasks, BITS jobs), evasion (e.g., API hooking, data encoding), and potentially lateral movement or data exfiltration.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - !#HSTR:StringCodeForMshta.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.C!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.D!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.L!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.O!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRegsvr32.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRundll32.A!pli (PEHSTR_EXT)
 - rundll32 (PEHSTR_EXT)
 - !#HSTR:StringCodeForBITSJobs.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForPowerShell.G!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForScheduledTask.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForDataEncoding.D!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.J!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.K!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRemoteFileCopy.B!pli (PEHSTR_EXT)
 - !#HSTR:ExecutionGuardrails (PEHSTR_EXT)
 - !#HSTR:StringCodeForFileDeletion.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.M!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForNetshHelperDLL.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRemoteServices.A!pli (PEHSTR_EXT)
YARA Rule:
rule Trojan_Win64_BazarLoader_ABZR_2147943043_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:Win64/BazarLoader.ABZR!MTB"
        threat_id = "2147943043"
        type = "Trojan"
        platform = "Win64: Windows 64-bit platform"
        family = "BazarLoader"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "1"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {8b 45 fc 83 c0 01 99 c1 ea 18 01 d0 0f b6 c0 29 d0 89 45 fc 8b 45 fc 48 63 d0 48 8b 45 20 48 01 d0 0f b6 00 0f b6 d0 8b 45 f8 01 d0 99 c1 ea 18 01 d0 0f b6 c0 29 d0 89 45 f8 8b 45 fc 48 63 d0}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Known malware which is associated with this threat:
Filename: nodejs.exe
c4780e33d7ab1bcd6304daede805b5ae0270c4aa8cea8823467e22697dd2f39b
25/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system from the network. Initiate a full scan with updated antivirus software to remove all detected components. Conduct a thorough forensic analysis to determine the initial access vector, extent of compromise, and identify any additional malware payloads. Reset all potentially compromised credentials and monitor network traffic for suspicious activity. Consider rebuilding the affected system from a trusted image.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 25/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊