MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a. 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: 12


Intelligence 12 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a
SHA3-384 hash: ee19a1f4c4d5b99429e878b3e55b754765aba05473600a5626539439b177241846224e72c2f19ae9a4ea7459ab3ea3c1
SHA1 hash: 41b87a5b4987af2fa0e382f6245f0fbaed7de851
MD5 hash: b9c2cf185b9c9bc4a0867a35e1e095b5
humanhash: quiet-colorado-violet-lake
File name:Factura de proforma.js
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'274'959 bytes
First seen:2026-03-16 17:27:52 UTC
Last seen:2026-03-16 17:28:42 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 12288:p6JQkiEjMGSzXZHGMf5A18+qvm3TlJ2Jw+tv2Ew0jraDEh+EiSoJulP3EnoPqnQh:pfaW8nHOzUSoJ+PEnoCnQP8grD55tW6
Threatray 3'852 similar samples on MalwareBazaar
TLSH T168457C9672F727AE979614436061B0FFAA6492FEE0DF203BF774D001D0F11A98AE1B54
Magika javascript
Reporter lowmal3
Tags:AgentTesla js

Intelligence

File Origin
# of uploads :
2
# of downloads :
272
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69b83db388c80c01586adafa
Tags:
virus shell sage
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
base64 encrypted masquerade obfuscated repaired
Link:
https://www.filescan.io/uploads/69b83dae4ec2f522cc4b6d03/reports/b184aab0-e021-4f7c-8846-daff986d2f1e/overview
Verdict:
Malicious
Labled as:
TrojanDropper/Agent.ane
Link:
https://www.hybrid-analysis.com/sample/51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a
Verdict:
Malicious
File Type:
text
Detections:
Trojan-PSW.MSIL.Agensla.sb Trojan.PowerShell.Cobalt.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic Trojan-Spy.Stealer.FTP.C&C Trojan-PSW.Agensla.TCP.C&C Trojan-PSW.Win32.Stealer.sb Trojan-PSW.Win32.Disco.sb Trojan-PSW.MSIL.Agensla.d HEUR:Worm.Script.Generic HEUR:Trojan-Downloader.Script.Generic Trojan.Win32.InjectorNetT.s PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a/results?tab=lookup
Result
Threat name:
AgentTesla, MATRIX Crypter
Create hunting rule
Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1884431
Signature
.NET source code contains potential unpacker
Bypasses PowerShell execution policy
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
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)
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, 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 reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected MATRIX Crypter
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1884431 Sample: Factura de proforma.js Startdate: 16/03/2026 Architecture: WINDOWS Score: 100 33 api.ipify.org 2->33 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 7 other signatures 2->51 8 wscript.exe 3 2->8         started        signatures3 process4 file5 29 C:\Temp\ps_EseT5g845kyM_1773682690661.ps1, ASCII 8->29 dropped 53 JScript performs obfuscated calls to suspicious functions 8->53 55 Suspicious powershell command line found 8->55 57 Wscript starts Powershell (via cmd or directly) 8->57 59 4 other signatures 8->59 12 powershell.exe 16 8->12         started        15 taskkill.exe 1 8->15         started        signatures6 process7 signatures8 61 Writes to foreign memory regions 12->61 63 Injects a PE file into a foreign processes 12->63 17 aspnet_compiler.exe 15 2 12->17         started        21 aspnet_compiler.exe 12->21         started        23 conhost.exe 12->23         started        27 4 other processes 12->27 25 conhost.exe 15->25         started        process9 dnsIp10 31 api.ipify.org 172.67.74.152, 443, 49733 CLOUDFLARENETUS United States 17->31 35 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->35 37 Tries to steal Mail credentials (via file / registry access) 17->37 39 Tries to harvest and steal ftp login credentials 17->39 43 2 other signatures 17->43 41 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->41 signatures11
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a/
Verdict:
Malicious
Threat:
Family.AGENTTESLA
Link:
https://tip.neiki.dev/file/51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kgvmki6oxo5witkaqysq443btazes6d7n564ssc3rxhzwzgyefva._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
01ae9da99db03e2e97c0a99c4147fa01d0838064d056b68accba84d16d36fea5
AgentTesla
20bd8539534e2dd5704b9c3bad34d64bbba4c96532dc19c522fd77edbbda3b0d
AgentTesla
5496c8de0d154dbedf97dd0b4c5c854f827c2c84a5d1320378506b421d9df90b
AgentTesla
5afa4d3a2779263357770e93b32055d7bd2a449678f552e72cc47c9d1085b150
AgentTesla
dc5696cfd8a4020c5ccdb9bec87a93d600865516c2c8d81610db9016f983dc00
AgentTesla
error
AgentTesla
+ 3'842 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla defense_evasion discovery execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/260316-v148kaev4w/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Command and Scripting Interpreter: PowerShell
AgentTesla
Agenttesla family
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/51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a

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:AgentTeslaV2
Create hunting rule
Author:ditekshen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:AgentTeslaV5
Create hunting rule
Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Base64_Encoded_Powershell_Directives
Create hunting rule
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:MALWARE_Win_AgentTeslaV2
Create hunting rule
Author:ditekSHen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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)
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:Windows_Generic_Threat_808f680e
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

Malspam

AgentTesla

Java Script (JS) js 51aac523cebbbb644d4086250e7361983249787f6f7dc9485b8dcf9b64d8216a

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments