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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85
SHA3-384 hash: b255442a31e3fabcb58c7114d55ec6e87cef39ea0a2c3548cdfc0bfe5a61980ddf5b74b906222e32d24b2c9f3a779840
SHA1 hash: 0da3f18a4b45b516cd0a222ad33a5af1d2e05d59
MD5 hash: 819d3116ec2edac4703b6108b57f0718
humanhash: equal-artist-network-magnesium
File name:RequestXforXQuotationXMKXFMHSRFQX9985622072025_pdf.rar
Download: download sample
Signature GuLoader
Create hunting rule
File size:513'351 bytes
First seen:2026-05-20 18:28:14 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 12288:drPq8OsFOg7AoVmVG1Tp6gYp4njxV55D1:FPqrSOgPmVGKgW4njxfx1
TLSH T185B4234FCAF6CA470FE2282FDDDDB4975116C804F9BACC34D261E9F19CA87794122986
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter TomU
Tags:GuLoader rar

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
CH CH
File Archive Information

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

File name:Request for Quotation MK FMHSRFQ 9985622072025.exe
File size:543'184 bytes
SHA256 hash: a748951aa8f1086a11e951cbbab15b446da21a0e6f675891936c0334cc8c0b38
MD5 hash: 9f8f0fbd01574d91e8ab39c4d8c939d2
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/95f5af40-8066-4eeb-ae5d-d74763e7220a/
Detection(s):
Sanesecurity.Foxhole.Rar_fs1620.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.Inject5.64086.10020.19806.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0e23214159ce11f60208bc
Tags:
injection uloader virus
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm base64 base64 encrypted evasive evasive fingerprint installer installer installer-heuristic microsoft_visual_cc nsis packed reconnaissance signed
Link:
https://www.filescan.io/uploads/6a0e0494861ee596e641cacd/reports/7750f6a4-ae0c-44d3-9ad1-481ba91022b4/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85
Verdict:
Malicious
File Type:
rar
First seen:
2025-07-22T00:42:00Z UTC
Last seen:
2026-04-19T05:31:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85/results?tab=lookup
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85/
Threat name:
Win32.Trojan.GULoader
Create hunting rule
Status:
Malicious
First seen:
2025-07-22 04:01:30 UTC
File Type:
Binary (Archive)
Extracted files:
7
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
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/fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85

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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

GuLoader

rar fb6784ef8f126a40384e80d790907259c7b0f6f72d55f96ebd3d00efc560cf85

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments