user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:JS/Obfuse.SK!MTB
Trojan:JS/Obfuse.SK!MTB - Windows Defender threat signature analysis

Trojan:JS/Obfuse.SK!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:JS/Obfuse.SK!MTB
Classification:
Type:Trojan
Platform:JS
Family:Obfuse
Detection Type:Concrete
Known malware family with identified signatures
Variant:SK
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 JavaScript platform, family Obfuse

Summary:

This is a JavaScript-based Trojan detected by behavioral analysis and concrete signatures, designed to evade detection through obfuscation. It actively attempts to execute remote payloads via `mshta.exe` from short URLs and leverages Windows Management Instrumentation (WMI) for process creation and potential code hooking. The threat aims to establish persistence and download/execute additional malicious components.

Severity:
High
VDM Static Detection:
Relevant strings associated with this threat:
 - .ShellExecute (namerun) (MACROHSTR_EXT)
 - = Folder & Rnd & ".jse" (MACROHSTR_EXT)
 - Selection.Find.Execute Replace:=wdReplaceAll (MACROHSTR_EXT)
 -  = Application.StartupPath & (MACROHSTR_EXT)
 - ).Comment.Text (MACROHSTR_EXT)
 - Worksheets(1).Activate (MACROHSTR_EXT)
 - .Methods_("Create"). _ (MACROHSTR_EXT)
 - InParameters.SpawnInstance_ (MACROHSTR_EXT)
 - FieldStr = Split(Tmp, "///") (MACROHSTR_EXT)
 - = oProcess.ExecMethod_(sHexDecode(" (MACROHSTR_EXT)
 - Shell """" + "ms" + "hta""""https:\\%40%40@j.mp\ (MACROHSTR_EXT)
 - Shell """" + "ms" + "hta""""" + "https:\\%40%40@j.mp\ (MACROHSTR_EXT)
 - !#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:StringCodeForFileDeletion.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.M!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForNetshHelperDLL.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRemoteServices.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForSoftwarePacking.C!pli (PEHSTR_EXT)
Known malware which is associated with this threat:
Filename: Client_Video_Updated_6090.hta
a3688d896f3b237d49f5e0d9584a48ef63320ef38b3c7a14a3d257c1fd8deddc
21/03/2026
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the affected host to prevent lateral movement. Perform a comprehensive system scan, investigate for persistence mechanisms and secondary payloads, and block associated malicious URLs/IPs at the network perimeter. Re-image the system if full compromise cannot be definitively ruled out.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 21/03/2026. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
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