MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4e087cfde30c73d2d0928805ed83a8792e886a109c0e5395d959aa94bd3bbe4a. 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: 14
| SHA256 hash: | 4e087cfde30c73d2d0928805ed83a8792e886a109c0e5395d959aa94bd3bbe4a |
|---|---|
| SHA3-384 hash: | ef6d5ae512fd78e4e4271deaa19705fb0b9bc7fdf13a1d029c19cb3719cf9a76de0b3c17c7175202a1eb2c2ddb29eb2a |
| SHA1 hash: | aecde3dbb0787be8b468ee41a1c6aef3591d4d1a |
| MD5 hash: | 21278e2e199de2429ef26bf53ddfeef6 |
| humanhash: | michigan-kentucky-mexico-social |
| File name: | Comprobante de pago.JS |
| Download: | download sample |
| Signature | MassLogger |
| File size: | 2'600'737 bytes |
| First seen: | 2026-11-05 09:32:42 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 49152:v2WgNuC3hPBQiADHhuA5qWowW1ovwO1ZvP0kgEnPwGoJ6dlL5PHlkTRhOyksvG/k:v2WgNuC3hPBQXDHhuA5qWowW1o4O1ZvG |
| TLSH | T14DC56D51C31CE573EA2DA71CC0376A610A2A280B6285EF3F32ACD65F7351B17275D9E2 |
| Magika | txt |
| Reporter |  abuse_ch |
| Tags: | js MassLogger |
Intelligence
File Origin
# of uploads :
1
# of downloads :
187
Origin country :
SEVendor Threat Intelligence
No detections
Detection(s):
Verdict:
Malicious
Score:
92.5%
Tags:
autorun proxy lien java
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug dropper evasive obfuscated packed repaired
Verdict:
Suspicious
Labled as:
JS/Agent.ECX2
Verdict:
Malicious
File Type:
js
First seen:
2026-11-04T15:59:00Z UTC
Last seen:
2026-11-05T06:16:00Z UTC
Hits:
~1000
Result
Threat name:
DonutLoader, MSIL Logger, MassLogger RAT
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Benign windows process drops PE files
Contains functionality to log keystrokes (.Net Source)
Creates autostart registry keys with suspicious values (likely registry only malware)
Drops PE files to the document folder of the user
Found malware configuration
Hides threads from debuggers
JavaScript source code contains functionality to generate code involving a shell, file or stream
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Sigma detected: WScript or CScript Dropper
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected DonutLoader
Yara detected Lua decrypt and execute
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Verdict:
Malware
YARA:
2 match(es)
Tags:
Batch Command DeObfuscated Javascript JS Emulation Trace PowerShell PowerShell Call Scripting.FileSystemObject T1027 T1059.001 T1059.007 WScript.Shell
Threat name:
Win32.Trojan.Malgent
Status:
Malicious
First seen:
2026-11-04 22:21:55 UTC
File Type:
Text (JavaScript)
AV detection:
11 of 24 (45.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
NovaStealer
Result
Malware family:
masslogger
Score:
10/10
Tags:
family:masslogger collection defense_evasion discovery execution persistence spyware stealer
Behaviour
Modifies registry class
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Family: MassLogger
Malware Family:
ecx2
Malicious:
True
Tags:
text
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
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_AgentTesla_ForgeAuto_ed343f78_Extrait |
|---|---|
| Author: | Marjoriefort |
| Description: | Detects AgentTesla (inconnu, etat extrait) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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