MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88. 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: 7


Intelligence 7 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88
SHA3-384 hash: 76aaeaef40cbd7a773122353cfff8b1d68b3617969d67467fab34727618eef596244eddc05f7de9fb6e717c49b3e08e4
SHA1 hash: ad3b84b94705ab9e5e9cb766558d8e5ce1e2a1b4
MD5 hash: 2c3e5b16b1cb4c1e30e41b05f60fdb7d
humanhash: stream-william-mars-november
File name:PAYMENT.r15
Download: download sample
Signature GuLoader
Create hunting rule
File size:346'403 bytes
First seen:2025-09-25 07:53:10 UTC
Last seen:2025-09-25 08:50:29 UTC
File type: rar
MIME type:application/x-rar
ssdeep 6144:MZ/u1Njp5pXO2krkWjFT8FMiy+xvTYWBGS+76EsLfzeptFpYJGj/vM3lE1yxAt1x:MZW1r55WDjaF7yovThBGS+WdzzUYJM/p
TLSH T11174230E1E374E3C24D6ED8DE1D48CCAA3572A689A61C1E667D46CC09E807CEB5B1DCD
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter cocaman
Tags:GuLoader payment r15 rar


Avatar
cocaman
Malicious email (T1566.001)
From: "Iehu@coscosh.com" (likely spoofed)
Received: "from [91.92.242.11] (unknown [91.92.242.11]) "
Date: "25 Sep 2025 17:27:49 -0700"
Subject: "RE: PAYMENT ADVISE - SC 210122"
Attachment: "PAYMENT.r15"

Intelligence

File Origin
# of uploads :
7
# of downloads :
78
Origin country :
CH CH
File Archive Information

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

File name:PAYMENT.exe
File size:367'248 bytes
SHA256 hash: 519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4
MD5 hash: f4eada0743d985d936f9ba3902a44f20
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d54db91e4783989051eee1
Tags:
uloader virus blic
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer masquerade microsoft_visual_cc nsis overlay signed
Link:
https://www.filescan.io/uploads/68d4f5a474e5a28989928697/reports/7922f163-66c6-40cf-8bf0-ced9dca6f6ce/overview
Verdict:
Malicious
Labled as:
Trojan.Downloader
Link:
https://www.hybrid-analysis.com/sample/4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88
Verdict:
Malicious
File Type:
rar
First seen:
2025-09-24T22:01:00Z UTC
Last seen:
2025-09-24T22:01:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88/results?tab=lookup
Verdict:
inconclusive
YARA:
1 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Rar Archive
Link:
https://app.malva.re/file/2c3e5b16b1cb4c1e30e41b05f60fdb7d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-09-25 02:58:07 UTC
File Type:
Binary (Archive)
Extracted files:
18
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jrf6lr4itfyjc4v24r72pad27nqqb7jqzo5to32ft7ugqb4azkea._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/250925-jz5l6awkz8/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
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/4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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

File information

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

Malspam

GuLoader

rar 4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88

(this sample)

GuLoader

Executable exe 519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4
  
Dropping
MD5 f4eada0743d985d936f9ba3902a44f20
  
Dropping
GuLoader

Comments