user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:Win32/Detplock
Trojan:Win32/Detplock - Windows Defender threat signature analysis

Trojan:Win32/Detplock - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:Win32/Detplock
Classification:
Type:Trojan
Platform:Win32
Family:Detplock
Detection Type:Concrete
Known malware family with identified signatures
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: Trojan - Appears legitimate but performs malicious actions for 32-bit Windows platform, family Detplock

Summary:

Trojan:Win32/Detplock is a dangerous Windows Trojan with concrete detection, known for employing sophisticated techniques for execution, persistence, and evasion. It leverages system utilities like mshta, regsvr32, rundll32, and PowerShell for execution, establishes persistence via scheduled tasks and BITS jobs, and can perform API hooking, remote file operations, network manipulation, and file deletion.

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_Win32_Detplock_RPX_2147845774_0
{
    meta:
        author = "threatcheck.sh"
        detection_name = "Trojan:Win32/Detplock.RPX!MTB"
        threat_id = "2147845774"
        type = "Trojan"
        platform = "Win32: Windows 32-bit platform"
        family = "Detplock"
        severity = "Critical"
        info = "MTB: Microsoft Threat Behavior"
        signature_type = "SIGNATURE_TYPE_PEHSTR_EXT"
        threshold = "2"
        strings_accuracy = "High"
    strings:
        $x_1_1 = {21 fb 4f 31 11 29 ff 81 ef 01 00 00 00 01 fb 41 81 eb 01 00 00 00}  //weight: 1, accuracy: High
        $x_1_2 = {8b 12 89 ff 81 e2 ff 00 00 00 09 df 29 db 29 db 46}  //weight: 1, accuracy: High
    condition:
        (filesize < 20MB) and
        (all of ($x*))
}
Remediation Steps:
Immediately isolate the infected system, perform a full system scan with updated antivirus software to remove the threat, and thoroughly investigate for and eradicate any established persistence mechanisms or secondary infections. Patch all systems, reset compromised user credentials, and consider a system reimage or restore from a clean backup to ensure complete eradication.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 13/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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