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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed
SHA3-384 hash: 559dd2015b316de2759b78594a0edf1d788161fa038e55508026bc620baa2e578f559923e9a122f4d70d0fa974f402f3
SHA1 hash: 99f76a61e157a9fabbd3a5b4c3b7694305fe9d54
MD5 hash: 312ef13f1f4ee5f4d1ef856d94e91c3e
humanhash: asparagus-winter-sixteen-colorado
File name:nRichiestapreventivo_n__38878_202602111259_pdf.r00
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'914 bytes
First seen:2026-02-11 11:00:08 UTC
Last seen:Never
File type: r00
MIME type:application/x-rar
ssdeep 48:ZSo+uoSYENLQbNi1fSAhrETdDEBg+XmSpUEj3EF:ZSo+usWfSAhrkErmw3EF
TLSH T145413DA83250727D2F43C363E25B1D89539CAC173107B2E14895979010F502CDD942B6
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter FXOLabs
Tags:GuLoader r00

Intelligence

File Origin
# of uploads :
1
# of downloads :
62
Origin country :
BR BR
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Richiesta preventivo_n._38878_202602111259_pdf.bat
File size:2'863 bytes
SHA256 hash: e4824713433a3fc0db0d80b5a0be004909fa02b7927e020e97e03feb0402c12f
MD5 hash: 0bbf3db03e5fa3958cde36eb86de62e7
MIME type:text/plain
Signature GuLoader
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/1bbcefab-b9a1-449e-87e9-90a3daa2a760/
Detection(s):
Legacy.Trojan.Agent-1388784
Create hunting rule

Legacy.Trojan.Agent-1388773
Create hunting rule

Sanesecurity.Foxhole.Rar_badexts54.UNOFFICIAL
Create hunting rule

Sanesecurity.Foxhole.Rar_pdf.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=698c4df538c84aca0d32d814
Tags:
n/a
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 masquerade obfuscated powershell
Link:
https://www.filescan.io/uploads/698c614d981ff1d38a514f79/reports/6f6bf189-3690-4ddc-9153-09fc72ccfb8a/overview
Verdict:
Suspicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed
Verdict:
Malicious
File Type:
rar
First seen:
2026-02-11T07:54:00Z UTC
Last seen:
2026-02-13T03:25:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed/results?tab=lookup
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed/
Verdict:
Malicious
Threat:
Family.GULOADER
Link:
https://tip.neiki.dev/file/b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2026-02-11 10:42:26 UTC
File Type:
Binary (Archive)
Extracted files:
1
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w5tok5xybpdhyro62ks3yyza4s3qscawekt7chogiix3v7boatwq._file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed

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: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.

Malspam

GuLoader

r00 b766e576f80bc67c45ded2a5bc6320e4b709081622a7f11dc6422fbafc2e04ed

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments