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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7. 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


GuLoader


Vendor detections: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7
SHA3-384 hash: f5e1aae59b00945e77da1ca22186c6b7b7c645458369ef4c61114d4913e4ce15a16ef87aa3217118f03ce8441b4b469a
SHA1 hash: fe801e8fe6dd780624de90c7d66d4c28f49aeeef
MD5 hash: 83e9eb655f33dbf11b1403c7994728bb
humanhash: romeo-lamp-mexico-lithium
File name:INFORME BANCARIO.js
Download: download sample
Signature GuLoader
Create hunting rule
File size:86'550 bytes
First seen:2026-10-30 07:30:11 UTC
Last seen:2026-11-02 07:05:30 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 1536:2MgCorCjKHpvm2JVPS6pP/bPsrdJP9bBK9ddyTYnNSOfVW:QC3jKH5m2JVauPzPKdt99K9/yTYnpfc
TLSH T1B2833A60C5B219368F8A77E8AC6B0569C5A8D31585F70CB0F5C6470D5109AFCF3BFA2A
Magika javascript
Reporter abuse_ch
Tags:GuLoader js

Intelligence

File Origin
# of uploads :
2
# of downloads :
178
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Win32.SuspectCrc.15144.9324.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae447abb175ade21dce9c1d
Tags:
virus agent sage
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated repaired
Link:
https://www.filescan.io/uploads/6ae4479626786964a62e01b9/reports/93b65971-7b03-4e50-94d6-c0c9664c3bef/overview
Verdict:
Suspicious
Labled as:
JS/Agent.FHV
Link:
https://www.hybrid-analysis.com/sample/3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7
Verdict:
Malicious
File Type:
js
First seen:
2026-10-29T12:27:00Z UTC
Last seen:
2026-11-01T04:55:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7/results?tab=lookup
Result
Threat name:
GuLoader
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1995188
Signature
Creates processes via WMI
Found suspicious powershell code related to unpacking or dynamic code loading
JavaScript source code contains functionality to compute date of execution (likely for evasion)
JavaScript source code contains functionality to generate code involving a shell, file or stream
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell connects to network
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
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 GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1995188 Sample: INFORME BANCARIO.js Startdate: 30/10/2026 Architecture: WINDOWS Score: 100 27 pki-goog.l.google.com 2->27 29 drive.usercontent.google.com 2->29 31 2 other IPs or domains 2->31 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected GuLoader 2->49 51 3 other signatures 2->51 9 wscript.exe 1 2->9         started        signatures3 process4 signatures5 53 Wscript starts Powershell (via cmd or directly) 9->53 55 Obfuscated command line found 9->55 57 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->57 59 2 other signatures 9->59 12 cmd.exe 1 9->12         started        process6 signatures7 61 Wscript starts Powershell (via cmd or directly) 12->61 15 powershell.exe 1 234 12->15         started        19 conhost.exe 12->19         started        21 cmd.exe 1 12->21         started        process8 dnsIp9 33 drive.google.com 142.251.35.78, 443, 49720 GOOGLE-GoogleLLCUS United States 15->33 35 drive.usercontent.google.com 142.251.41.1, 443, 49721 GOOGLE-GoogleLLCUS United States 15->35 37 Writes to foreign memory regions 15->37 39 Found suspicious powershell code related to unpacking or dynamic code loading 15->39 41 Switches to a custom stack to bypass stack traces 15->41 43 Powershell connects to network 15->43 23 backgroundTaskHost.exe 15->23         started        25 backgroundTaskHost.exe 15->25         started        signatures10 process11
Score:
85%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7
Verdict:
Malware
YARA:
3 match(es)
Tags:
DeObfuscated PowerShell T1027 T1059.001
Link:
https://app.malva.re/file/83e9eb655f33dbf11b1403c7994728bb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7/
Threat name:
Text.Trojan.Generic
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Status:
Suspicious
First seen:
2026-10-29 15:26:03 UTC
File Type:
Text (JavaScript)
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h3s3qasy7delkweyjot3jmvd76docaivbht35k2kbs3uym4jvplq._file
Result
Malware family:
guloader
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Score:
  10/10
Tags:
family:guloader defense_evasion discovery downloader execution privilege_escalation
Link:
https://tria.ge/reports/261030-jb41qaby3m/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Badlisted process makes network request
Family: Guloader,Cloudeye
Process spawned unexpected child process
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3ee5b80258f8/report/overview.html
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/3ee5b80258f8c8b558984ba7b4b2a3ff86e1011509e7beab4a0cb74c3389abd7

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:Cerberus
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Author:Jean-Philippe Teissier / @Jipe_
Description:Cerberus
Rule name:dependsonpythonailib
Create hunting rule
Author:Tim Brown
Description:Hunts for dependencies on Python AI libraries

File information

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

Comments