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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131. 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


AgentTesla


Vendor detections: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131
SHA3-384 hash: 47d24ff14c334ce561f85e8a7b0e1f962fc176320a9e1575d0320697469748e67a5cbae06a1255508f1de3db4a1edf86
SHA1 hash: 22623d8e8da2a31a18dbecc84e5056c228871081
MD5 hash: 656911c02d0fee9be9b4c29ef78b4544
humanhash: oven-four-arkansas-king
File name:Formulario_Datos_Bancarios.pdf.js
Download: download sample
Signature AgentTesla
Create hunting rule
File size:21'565 bytes
First seen:2026-10-06 07:54:25 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:application/javascript
ssdeep 384:CNC2dXZQ6vUcjgdnh3kvDaZ+fOn28K+y4jXiUb7OHIlngPwUo/qLzwEJ047OEzny:CNCYXZQ6UcjgdnBkvDa4fOn28K+y4jy6
TLSH T19CA2EB414881758253B37BBAA71AE8A5F77B1B6B01C44507B47CB840EFF2D08DEE49B6
Magika javascript
Reporter abuse_ch
Tags:AgentTesla js

Intelligence

File Origin
# of uploads :
1
# of downloads :
85
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.JS.Obfus-2303.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6acfbb176f551121ba1557f0
Tags:
virus shell spawn
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
encrypted evasive masquerade obfuscated powershell repaired
Link:
https://www.filescan.io/uploads/6ac4a968803f6a39d83fb533/reports/8dcc0427-063d-4619-9c77-c24697b887ca/overview
Verdict:
Malicious
Labled as:
Trojan.Formbook.JS
Link:
https://www.hybrid-analysis.com/sample/321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131
Verdict:
Malicious
File Type:
js
First seen:
2026-10-05T16:06:00Z UTC
Last seen:
2026-10-08T01:51:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131/results?tab=lookup
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1982850
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Bypasses PowerShell execution policy
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
JavaScript source code contains functionality to generate code involving a shell, file or stream
JavaScript source code contains functionality to generate code involving HTTP requests or file downloads
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Suspicious Parent Double Extension File Execution
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected Generic JS Downloader
Yara detected Powershell decode and execute
Yara detected Python Decrypt and Execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1982850 Sample: Formulario_Datos_Bancarios.pdf.js Startdate: 06/10/2026 Architecture: WINDOWS Score: 100 25 ip-api.com 2->25 41 Suricata IDS alerts for network traffic 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 14 other signatures 2->47 8 wscript.exe 21 2->8         started        signatures3 process4 file5 23 C:\Temp\MJHQT107.ps1, ASCII 8->23 dropped 49 JScript performs obfuscated calls to suspicious functions 8->49 51 Wscript starts Powershell (via cmd or directly) 8->51 53 Bypasses PowerShell execution policy 8->53 55 3 other signatures 8->55 12 powershell.exe 16 8->12         started        signatures6 process7 signatures8 57 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 12->57 59 Writes to foreign memory regions 12->59 61 Injects a PE file into a foreign processes 12->61 15 aspnet_compiler.exe 15 2 12->15         started        19 aspnet_compiler.exe 12->19         started        21 conhost.exe 12->21         started        process9 dnsIp10 27 ip-api.com 208.95.112.1, 49743, 80 TUT-AS-TotalUptimeTechnologiesLLCUS United States 15->27 29 Tries to steal Mail credentials (via file / registry access) 15->29 31 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 15->31 33 Tries to harvest and steal browser information (history, passwords, etc) 15->33 35 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 19->35 37 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->37 39 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 19->39 signatures11
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131
Gathering data
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131/
Threat name:
Script-JS.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-10-05 20:21:13 UTC
AV detection:
8 of 38 (21.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gio7shgytsui72ddxtwlc4r4na5mm6ynpbqdplbvcuunvcpz4eyq._file
Verdict:
malicious
Label(s):
AgentTesla
Create hunting rule
FantomCrypt
Create hunting rule
Link:
https://reports.threatray.com/87e33ecc-2412-4e83-a3d7-ae03671f4a26
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection discovery execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/261006-jsa4zatdpa/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: JavaScript
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Enumerates connected drives
Looks up external IP address via web service
Checks computer location settings
Badlisted process makes network request
Family: AgentTesla
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/321df91cd89ca88fe863bcecb1723c683ac67b0d786037ac351528da89f9e131

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:SUSP_JS_HexObfuscated_ActiveX_Launcher
Create hunting rule
Author:Marjoriefort
Description:JS obfusque (identifiants _0x) instanciant ActiveX sous WScript - dropper JScript frais
Reference:Veille fraicheur 2026-09-14 / cluster JS _0x
Rule name:SUSP_obfuscated_JS_obfuscatorio
Create hunting rule
Author:@imp0rtp3
Description:Detect JS obfuscation done by the js obfuscator (often malicious)
Reference:https://obfuscator.io
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