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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 573ef8f3be95a574e5d77952eb5b9577fba0e15e689c2d05b38173e3ea27ef5f. 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


MassLogger


Vendor detections: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 573ef8f3be95a574e5d77952eb5b9577fba0e15e689c2d05b38173e3ea27ef5f
SHA3-384 hash: 624edfa3502916432c49256c04c746f7d1d182a13cd74c5d680b72602600f0c6f84ce45fa02acd50c08bbf90f1f9ad46
SHA1 hash: d6c35a4bab3fb6880be213c05202242d7218bfc6
MD5 hash: 6eddb594dfb207197bfe5a3593565d25
humanhash: neptune-football-east-three
File name:Comprobante de transferencia.js
Download: download sample
Signature MassLogger
Create hunting rule
File size:5'454'980 bytes
First seen:2026-09-24 05:42:45 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 3072:C/pC+gTuoDdvPkJXR2h600aVN0IrnQnkPl5Igj4QdA+obiftfLOx+kRo+Vd4y5uq:8
TLSH T14E468C4673E0126DA9F4290DDB3FE003AA1F259BC659D2C5E90EE33637B3B895090DE5
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika vba
Reporter abuse_ch
Tags:js MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
114
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
repaired
Link:
https://www.filescan.io/uploads/6ab4b87d0031b3f3e42e9b11/reports/e3efe671-8865-48db-acdc-b609c2c86cc1/overview
Verdict:
Malicious
Labled as:
GT:JS.Loader.30
Link:
https://www.hybrid-analysis.com/sample/573ef8f3be95a574e5d77952eb5b9577fba0e15e689c2d05b38173e3ea27ef5f
Verdict:
Malicious
File Type:
js
First seen:
2026-09-23T14:20:00Z UTC
Last seen:
2026-09-26T01:00:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/573ef8f3be95a574e5d77952eb5b9577fba0e15e689c2d05b38173e3ea27ef5f/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1977406
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Suspicious Environment Variable Has Been Registered
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious 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)
Wscript starts Powershell (via cmd or directly)
Yara detected MSIL Injector
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1977406 Sample: Comprobante de transferencia.js Startdate: 24/09/2026 Architecture: WINDOWS Score: 100 24 gmxx.online 2->24 26 pki-goog.l.google.com 2->26 28 c.pki.goog 2->28 30 Malicious sample detected (through community Yara rule) 2->30 32 Antivirus detection for URL or domain 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 12 other signatures 2->36 8 wscript.exe 6 2 2->8         started        12 wscript.exe 2->12         started        14 powershell.exe 14 7 2->14         started        signatures3 process4 file5 22 C:\Users\Public\Downloads\kvkHewWARp.js, Unicode 8->22 dropped 38 Suspicious powershell command line found 8->38 40 Wscript starts Powershell (via cmd or directly) 8->40 42 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->42 44 3 other signatures 8->44 16 powershell.exe 12->16         started        18 conhost.exe 14->18         started        signatures6 process7 process8 20 conhost.exe 16->20         started       
Verdict:
inconclusive
YARA:
1 match(es)
Link:
https://app.malva.re/file/6eddb594dfb207197bfe5a3593565d25
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/573ef8f3be95a574e5d77952eb5b9577fba0e15e689c2d05b38173e3ea27ef5f/
Threat name:
Script-JS.Trojan.LausivLoader
Create hunting rule
Status:
Malicious
First seen:
2026-09-23 21:52:36 UTC
File Type:
Text (JavaScript)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k47pr456swsxjzoxpfjoww4vo752byk6ncoc2bntqfz6h2rh55pq._file
Verdict:
malicious
Label(s):
NovaStealer
Create hunting rule
Link:
https://reports.threatray.com/b905865c-c871-4b0e-a7b0-eb60c50af6b8
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery execution persistence spyware stealer
Link:
https://tria.ge/reports/260924-ger48azsct/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
outlook_office_path
outlook_win_path
Command and Scripting Interpreter: JavaScript
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: MassLogger
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.21
Link:
https://yomi.yoroi.company/submissions/573ef8f3be95a574e5d77952eb5b9577fba0e15e689c2d05b38173e3ea27ef5f

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:MULTI_Malware_PureLogsStealer_ForgeAuto_0cd320ac
Create hunting rule
Author:Marjoriefort
Description:Detects PureLogsStealer (inconnu, etat binaire)

File information

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

Comments