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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


QuasarRAT


Vendor detections: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005
SHA3-384 hash: c5b95557cc5ae4c955e2d251aef1d08fecad784be3c1f47a744c18d13c9dd601d2c49fc3914caeb671cfd1634803ca32
SHA1 hash: 4edd5d289320bd77059caade8dc2105855e69d94
MD5 hash: 91ed4c3bee3d9c075114bfe8e7e797a7
humanhash: oscar-nevada-solar-floor
File name:NEW-RFQ-ENQ1929-SHO.js
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'367'480 bytes
First seen:2026-10-05 09:01:54 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:application/javascript
ssdeep 24576:oyYdh3/V0eaEKxqGfDzH+XNSK33i6RolYDCrbvDfaVhOkgYwTQTQXaomEGozw8NQ:oD5nGWAiNR/hRqToQGlJvPE/xl4
TLSH T16BF5315DA6769BB90B9CF287493CA86D3E4DBEA0C13010B5BC3EB25BB15CD18D15B12C
Magika javascript
Reporter abuse_ch
Tags:js QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
186
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6acf6d33f4e17c78f7151064
Tags:
dropper virus
Gathering data
Verdict:
Malicious
Labled as:
VBS/Agent.TKB trojan
Link:
https://www.hybrid-analysis.com/sample/66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005
Verdict:
Malicious
File Type:
js
First seen:
2026-10-05T05:24:00Z UTC
Last seen:
2026-10-07T07:41:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005/results?tab=lookup
Result
Threat name:
Clipboard Hijacker, LxBase RAT, Quasar
Create hunting rule
Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1982216
Signature
C2 URLs / IPs found in malware configuration
Creates processes via WMI
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
JavaScript file contains suspicious strings
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Potential evasive JS / VBS script found (domain check)
Sample uses string decryption to hide its real strings
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript called in batch mode (surpress errors)
Wscript starts Powershell (via cmd or directly)
Yara detected Clipboard Hijacker
Yara detected LxBase RAT
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1982216 Sample: NEW-RFQ-ENQ1929-SHO.js Startdate: 05/10/2026 Architecture: WINDOWS Score: 100 39 www.google.com 2->39 41 mobile-gtalk.l.google.com 2->41 43 android.l.google.com 2->43 45 Found malware configuration 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected LxBase RAT 2->49 51 10 other signatures 2->51 9 wscript.exe 1 2->9         started        12 wscript.exe 1 4 2->12         started        signatures3 process4 file5 33 C:\Users\user\AppData\Local\Temp\19397.ps1, Unicode 9->33 dropped 15 cmd.exe 1 9->15         started        18 cmd.exe 1 9->18         started        35 C:\Users\user\AppData\Local\Temp\98909.ps1, Unicode 12->35 dropped 37 C:\Users\user\AppData\Local\...\manifest.js, ASCII 12->37 dropped 61 Wscript starts Powershell (via cmd or directly) 12->61 63 Windows Scripting host queries suspicious COM object (likely to drop second stage) 12->63 65 Suspicious execution chain found 12->65 67 2 other signatures 12->67 signatures6 process7 signatures8 69 Suspicious powershell command line found 15->69 71 Wscript starts Powershell (via cmd or directly) 15->71 20 powershell.exe 15 15->20         started        23 conhost.exe 15->23         started        25 powershell.exe 15 18->25         started        27 conhost.exe 18->27         started        process9 signatures10 53 Found many strings related to Crypto-Wallets (likely being stolen) 20->53 55 Writes to foreign memory regions 20->55 57 Modifies the context of a thread in another process (thread injection) 20->57 29 MSBuild.exe 1 20->29         started        59 Injects a PE file into a foreign processes 25->59 31 MSBuild.exe 25->31         started        process11
Score:
83%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005
Verdict:
inconclusive
YARA:
1 match(es)
Tags:
Javascript T1059.007
Link:
https://app.malva.re/file/91ed4c3bee3d9c075114bfe8e7e797a7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005/
Threat name:
Text.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-10-05 08:11:10 UTC
File Type:
Text
AV detection:
5 of 38 (13.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3heahopakrtgvutljzakv7u2g77mlxgyqphdzgrxe3iktrj6acq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
execution persistence
Link:
https://tria.ge/reports/261005-kzxf8aydmh/
Behaviour
Uses Task Scheduler COM API
Command and Scripting Interpreter: JavaScript
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/66ce401dcf02a33356935a720557f4d1bff62ee6c41e71e4d1b936854e29f005

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Detect_all_IPv6_variants
Create hunting rule
Author:Bierchermuesli
Description:Generic IPv6 catcher
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:SCRIPT_Dropper_Unknown_ForgeAuto_0507f067_Script
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (script_js, etat script)
Rule name:Suspicious_Process
Create hunting rule
Author:Security Research Team
Description:Suspicious process creation
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments