MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161. 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

SHA256 hash:	ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161
SHA3-384 hash:	2678dd3b4c7dbbd5d4fc920886bdeef7c120850229b1aaacfed9e52e093bfe82263d7afca54c34757c418575ed0ea1cb
SHA1 hash:	41c0fef6ce77b79a11ae14cecd30e6e8e5430608
MD5 hash:	80f7a04d96531b5eb38f8089dc584d9e
humanhash:	winter-green-december-video
File name:	Confirmación de pago.js
Download:	download sample
Signature	AgentTesla Alert Create hunting rule
File size:	2'087'166 bytes
First seen:	2026-07-28 05:55:29 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	384:637373737373737373737373737373737373737373737373737373737373737p:3M
TLSH	T165A53B556D1FE809028A21C1942BA6A57EDD3B99BD00E44AFF3ACCFDE4109D4B424FB7
Magika	javascript
Reporter	lowmal3
Tags:	AgentTesla js

Intelligence

---

File Origin

# of uploads :

1

# of downloads :

159

Origin country :

DE

Vendor Threat Intelligence

ACCE Unknown

No detections

ClamAV Detected

Detection(s):

SecuriteInfo.com.JS.Packed.161.28376.9717.UNOFFICIAL

Alert

Create hunting rule

FileScan.IO Likely Malicious

Verdict:

Likely Malicious

Threat level:

  7.5/10

Confidence:

100%

Tags:

repaired

Link:

https://www.filescan.io/uploads/6a684458dabad8b495d130f3/reports/81c27c24-2f9d-4954-acf9-db3f253af2c9/overview

Hybrid Analysis Trojan.Cryxos.JS

Verdict:

Malicious

Labled as:

Trojan.Cryxos.JS

Link:

https://www.hybrid-analysis.com/sample/ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161

Kaspersky OpenTIP Malicious

Verdict:

Malicious

File Type:

js

First seen:

2026-07-27T14:39:00Z UTC

Last seen:

2026-07-30T04:26:00Z UTC

Hits:

~10000

Link:

https://opentip.kaspersky.com/ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161/results?tab=lookup

Joe Sandbox AgentTesla

Result

Threat name:

AgentTesla

Alert

Create hunting rule

Detection:

malicious

Classification:

expl.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1948737

Signature

Antivirus detection for URL or domain

Check if machine is in data center or colocation facility

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Creates processes via WMI

Detected large data written to user environment variables, potentially indicating payload staging for fileless execution

Drops script or batch files to the startup folder

Found malware configuration

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

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: Drops script at startup location

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)

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Writes to foreign memory regions

Wscript starts Powershell (via cmd or directly)

Yara detected AgentTesla

Yara detected Powershell decode and execute

Behaviour

Behavior Graph:

Download SVG

Nucleon Malprob Benign

Score:

30%

Verdict:

Benign

File Type:

SCRIPT

Link:

https://malprob.io/report/ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161

Malva.RE

Gathering data

CERT.PL MWDB agenttesla

Detection:

agenttesla

Alert

Create hunting rule

Link:

https://mwdb.cert.pl/sample/ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161/

ReversingLabs TitaniumCloud Script-JS.Downloader.Remcos

Threat name:

Script-JS.Downloader.Remcos

Alert

Create hunting rule

Status:

Malicious

First seen:

2026-07-27 20:31:14 UTC

File Type:

Binary

AV detection:

11 of 24 (45.83%)

Threat level:

  3/5

Spamhaus Hash Blocklist Suspicious file

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=55bwunvtwqssl4dlha45ly7vb5x7ef2utshslwen7zxsioc62fqq._file

Hatching Triage agenttesla

Result

Malware family:

agenttesla

Alert

Create hunting rule

Score:

  10/10

Tags:

family:agenttesla collection discovery execution keylogger persistence privilege_escalation spyware stealer trojan

Link:

https://tria.ge/reports/260728-gmrhnafd23/

Behaviour

Modifies registry class

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

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Creates a file in the Startup directory

Badlisted process makes network request

Family: AgentTesla

Process spawned unexpected child process

VMRay AgentTesla

Malware family:

AgentTesla

Alert

Create hunting rule

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/ef436a36b3b4/report/overview.html

VirusTotal

Please note that we are no longer able to provide a coverage score for Virus Total.

YOROI YOMI Malicious File

Threat name:

Malicious File

Score:

0.85

Link:

https://yomi.yoroi.company/submissions/ef436a36b3b42525f06b3839d5e3f50f6ff217549c8f25d88dfe6f24385ed161