user@threatcheck.sh ~ threat-analysis
bash
$ analyze-threat TrojanDropper:BAT/Starter.G!MSR
TrojanDropper:BAT/Starter.G!MSR - Windows Defender threat signature analysis

TrojanDropper:BAT/Starter.G!MSR - Windows Defender Threat Analysis

$ cat analysis.txt
=== THREAT ANALYSIS REPORT ===
Threat Name: TrojanDropper:BAT/Starter.G!MSR
Classification:
Type:TrojanDropper
Platform:BAT
Family:Starter
Detection Type:Concrete
Known malware family with identified signatures
Variant:G
Specific signature variant within the malware family
Suffix:!MSR
High-priority threat flagged by Microsoft Security Response
Confidence:Very High
False-Positive Risk:Low

Concrete signature match: TrojanDropper for Batch Script platform, family Starter

Summary:

TrojanDropper:BAT/Starter.G!MSR is a malicious batch script that acts as a first-stage downloader. It leverages legitimate Windows utilities (LOLBins) like PowerShell, Regsvr32, and Mshta to download and execute additional, more harmful malware. The threat also attempts to establish persistence on the system using Scheduled Tasks or BITS jobs to ensure the payload survives a reboot.

Severity:
High
VDM Static Detection:
Relevant strings associated with this threat:
 - gq|#TEL (NID)
 - gq}#TEL (NID)
 - ToBase64String (PEHSTR_EXT)
 - !#HSTR:StringCodeForMshta.A!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.C!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.D!pli (PEHSTR_EXT)
 - WH_DEBUG (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.L!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.O!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForRegsvr32.A!pli (PEHSTR_EXT)
 - regsvr32 (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)
 - ENIGMA (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.J!pli (PEHSTR_EXT)
 - !#HSTR:StringCodeForHooking.K!pli (PEHSTR_EXT)
No specific strings found for this threat
Known malware which is associated with this threat:
6d81b7553bb5799ce01dd205e3cd6f11f6e5a98b4d52df3115a04447588f101c
06/11/2025
→VirusTotal↓Download Sample
Remediation Steps:
Isolate the affected host from the network. Ensure Windows Defender has removed the initial BAT file and run a full system scan to detect and remove any secondary payloads. Manually review and delete any suspicious scheduled tasks, BITS jobs, or registry startup entries created around the time of the infection.
=== END REPORT ===
$ reanalyze-threat
This analysis was last updated on 06/11/2025. Do you want to analyze it again?
$ ls available-commands/
→ cd /home
user@threatcheck.sh:~$ ▊