user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat Trojan:VBS/AgentTesla.RVA!MTB
Trojan:VBS/AgentTesla.RVA!MTB - Windows Defender threat signature analysis

Trojan:VBS/AgentTesla.RVA!MTB - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: Trojan:VBS/AgentTesla.RVA!MTB
Classification:
Type:Trojan
Platform:VBS
Family:AgentTesla
Detection Type:Concrete
Known malware family with identified signatures
Variant:RVA
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 VBScript platform, family AgentTesla

Summary:

This is a concrete detection of a VBScript-based AgentTesla Trojan, a well-known info-stealer and keylogger. It leverages various Windows utilities like rundll32, PowerShell, mshta, and scheduled tasks for execution, persistence, hooking, and data encoding, potentially exfiltrating sensitive information to hardcoded suspicious URLs.

Severity:
Critical
VDM Static Detection:
Relevant strings associated with this threat:
 - "tp://1230912489%1230192309@j.mp/" (MACROHSTR_EXT)
 - "tp://1230948%1230948@j.mp/" (MACROHSTR_EXT)
 - "23bbsdajs821" (MACROHSTR_EXT)
 - =opera.x+opera.y+textfileforyou.z+textfileforyou.d+hi.openmarket+hi.xxx+hi.k+hi.t (MACROHSTR_EXT)
 - textfilestuff.mosuf.tagendfunction (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: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)
Known malware which is associated with this threat:
Filename: Holiday_Bookings_031.vbs
31f1da01a4339df756a8ebdcd2e933f4d3967d2beadc76098a36e4e60d4c7a31
18/12/2025
→VirusTotal↓Download Sample
Filename: Holiday_Bookings_078.vbs
1180ed9832f2127292c76ee0660864b6f539a38ed539e62c74fcfe96d044b105
18/12/2025
→VirusTotal↓Download Sample
Filename: Holiday_Bookings.vbs
590bd2abfd260783e797c1d2afe52b6655c5d9d4e3ff9429e0574ec5e507c776
18/12/2025
→VirusTotal↓Download Sample
Remediation Steps:
Immediately isolate the infected system from the network. Perform a full scan with updated antivirus, remove all detected threats, and reset all credentials used on the compromised machine. Investigate for persistence mechanisms, C2 communication, and data exfiltration.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 18/12/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊