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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f85dcd13eb07f1130ee361009cc78918f89983d2f7a2c68840b3efda3a9898fe. 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

SHA256 hash: f85dcd13eb07f1130ee361009cc78918f89983d2f7a2c68840b3efda3a9898fe
SHA3-384 hash: 7f5afcdc3dafe6c1fc2f86556f757f59472a21ae0579b8a725d08775c0fb40b90de304884a38545938f9089b123ab098
SHA1 hash: 5f3dc9f81c93f9a56639a3051cc4c08bc632a501
MD5 hash: ef91254cd15e77e4e64b26b13e8f7faf
humanhash: lake-fish-comet-alanine
File name:ConfirmingXFacturasXPagadasXalXVencimientoXpdf.tar
Download: download sample
Signature GuLoader
File size:714'752 bytes
First seen:2026-05-20 18:27:15 UTC
Last seen:Never
File type: tar
MIME type:application/x-tar
ssdeep 12288:1t71Qk919aC5OT5zaxt5g7PTq3skk+kthCaG782X732JVSd:v7R919OTkxg7WdPkjE8Y2JVSd
TLSH T102E42340B311F06ADAE70D70856BDA764EFB7D21B6A527129308760F7AF53E1E80E643
TrID 62.9% (.TAR/GTAR) TAR - Tape ARchive (GNU) (17/3)
37.0% (.TAR) TAR - Tape ARchive (file) (10/3)
Magika tar
Reporter TomU
Tags:GuLoader tar

Intelligence


File Origin
# of uploads :
1
# of downloads :
52
Origin country :
CH CH
File Archive Information

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

File name:Confirming Facturas Pagadas al Vencimiento.exe
File size:712'920 bytes
SHA256 hash: 423dd6ea270685a9497f775cc7b5eda9c6def177c9e3456e56da4b0aacbfba08
MD5 hash: 972336a0bbf109327cc30e2f6f4e331e
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
99.1%
Tags:
obfuscate xtreme virus
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug evasive expired-cert installer installer installer-heuristic masquerade microsoft_visual_cc nsis reconnaissance signed
Verdict:
Malicious
File Type:
tar
First seen:
2025-06-30T07:29:00Z UTC
Last seen:
2026-01-07T07:28:00Z UTC
Hits:
~100
Gathering data
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2025-06-30 10:53:14 UTC
File Type:
Binary (Archive)
Extracted files:
13
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:VECT_Ransomware
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

tar f85dcd13eb07f1130ee361009cc78918f89983d2f7a2c68840b3efda3a9898fe

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments