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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119
SHA3-384 hash: cc292abdd5e3bb0d9d86127973700a7dceac708dc34959dbd0ce45f83b6b710b2e51f7aec1a480a0a5913168d893e437
SHA1 hash: a901bf72c2af2a5b4eea7c22884f8d4e8095d96e
MD5 hash: e7271afe82da20f1365d7337d22db8cf
humanhash: nebraska-lactose-hamper-video
File name:Número_de_documento_de_factura_2100610-pdf.rar
Download: download sample
Signature GuLoader
Create hunting rule
File size:595'010 bytes
First seen:2026-05-20 17:36:48 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 12288:H9LH4Pf/SxPAvD81mKQhkNYNhVNrukfYYKChclrW0T3G9nON4GRJtwtfT8:5H4vSRAvogKQh1NDg6oJG24GLKQ
TLSH T194C423BEED10867CC04BF449D46279359E55A3812E199F23323582F3BB6A563D863CCE
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 :
18
Origin country :
CH CH
File Archive Information

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

File name:Número de documento de factura 2100610-pdf.exe
File size:803'587 bytes
SHA256 hash: 886ab40cc627c57d98b18a268089625baf53c704fadb5c49e99fcb317422a375
MD5 hash: f1046c88fa705a92f0d52d7411ca8726
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/5009c295-5ac5-4400-8fa3-2e0e8bf1ae75/
Detection(s):
Legacy.Trojan.Agent-1388784
Create hunting rule

Legacy.Trojan.Agent-1388773
Create hunting rule

Sanesecurity.Foxhole.Rar_pdf.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0dfecf4f2b29ce0401fb2f
Tags:
underscore obfuscate virus shell
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug evasive installer installer installer-heuristic masquerade microsoft_visual_cc nsis overlay reconnaissance smb
Link:
https://www.filescan.io/uploads/6a0df4c2efbd399b39c01752/reports/2f995f2d-c7c9-4079-945a-811838f2bb6f/overview
Verdict:
Suspicious
Labled as:
Mal/DrodRar
Link:
https://www.hybrid-analysis.com/sample/4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119
Verdict:
Malicious
File Type:
rar
First seen:
2025-02-12T08:31:00Z UTC
Last seen:
2025-08-31T15:41:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119/results?tab=lookup
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-02-12 11:50:32 UTC
File Type:
Binary (Archive)
Extracted files:
25
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iu27i4fuv7f3g4pz4frnfmd5md6p6kkmductsh2kg4iiyi3uiemq._file
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/4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
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.

File information

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

Malspam

GuLoader

rar 4535f470b4afcbb371f9e162d2b07d60fcff294c1d05391f4a37108c23744119

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments