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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809
SHA3-384 hash: 6a3dab73ec5c46f8ca423238bde3b48d5d78d599eea796704e18662e4d84e6737a5ec504e8b32968ce21359388dcc4d6
SHA1 hash: d7547ce372b2c0a25439f77ad98e1ddc2d5f1eda
MD5 hash: 855a7d9da970dd7004a886c91bfda171
humanhash: kansas-comet-high-ink
File name:rMODELO1112T2026.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:428'280 bytes
First seen:2026-07-16 01:00:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (145 x GuLoader, 57 x Formbook, 47 x VIPKeylogger)
ssdeep 6144:lXsKoG8pL7qzqAeYyEM5zVPZI9PZY630ExBGogd6MOjZaM9oQEfj7S/fNM/f6HxZ:lXuLsq/DIVv5cdDO1aM9VGe/m/UDT
Threatray 2'474 similar samples on MalwareBazaar
TLSH T1FB9412962690D727C3761D76F954D6DDDBACAA10A2B49BA313F03A4FB832EC5440F321
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 8ceecaccf7d4ccd0 (2 x GuLoader)
Reporter FXOLabs
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Ekspedienterne
Issuer:Ekspedienterne
Algorithm:sha256WithRSAEncryption
Valid from:2026-07-01T04:20:43Z
Valid to:2027-07-01T04:20:43Z
Serial number: 7fd3f13bf4a100e5bb2af1463da4f6a864aa8215
Thumbprint Algorithm:SHA256
Thumbprint: 23cbfd8a2c5db2706b0f7aa2ea8ddd7bb85896868d5a8ab60c6daf82ca753820
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
234
Origin country :
US US
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/1663764d-8610-4062-9208-397a5ee58e92/
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/74842/
Detection(s):
SecuriteInfo.com.Other.Malware-gen.51761917.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a582d6ab3055706bb556430
Tags:
n/a
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Link:
https://www.filescan.io/uploads/6a582d5b607ee813acf9f11f/reports/42452c9c-c419-4f93-be0a-2686a6438889/overview
Verdict:
Suspicious
Labled as:
Injector.GFPM
Link:
https://www.hybrid-analysis.com/sample/66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-15T17:37:00Z UTC
Last seen:
2026-07-17T20:28:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c1663731-520d-4b7c-b8d6-c1879d17c76b
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/855a7d9da970dd7004a886c91bfda171
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2026-07-16 01:01:41 UTC
File Type:
PE (Exe)
Extracted files:
11
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m2q34oiz6pzdoehly3ky3lye4wv5kjeq6suvte6ouzym7qrrjaeq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
10b13048b3765fdacc9108982f2ccbc6a065e2c78efa8c0299179f7547c49f64
GuLoader
121c058c756297ff8e8dd3f69587c590ebbfe6858e896a8730f711f9f742d10f
GuLoader
4a6b8d26d298279a62f2a27aa6a8a9b67db22a2195f9e4de3c19dccb0a0f8126
GuLoader
7861a056a2451cb107a0f489df465ea836cb57d8921dac618db52d62bf349df3
GuLoader
8b12af481c0add9d0d208b62113612e08ed203e02a9d4416e175293c80be7b18
GuLoader
a00952a8a5fa01b477caf86fd71aa08e3ac4ea124c8178db4bf6676a995a09e0
GuLoader
a256d4290bfecae2bdb862778861fc0f698d60b5c110855c4b3a0881e61fdfa6
GuLoader
b220fc0d454d709488e2cd1ee7d07f0a3315772407169b28de1317e5e8ba57b8
GuLoader
c39c110a99a370d96dc726eed2f9a98a3b57c68874f7ed098ca5631b5f9c8a0c
GuLoader
error
GuLoader
+ 2'464 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:vipkeylogger collection discovery keylogger spyware stealer
Link:
https://tria.ge/reports/260716-bda7esds2v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for C2
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Family: VIPKeylogger
Unpacked files
SH256 hash:
66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809
MD5 hash:
855a7d9da970dd7004a886c91bfda171
SHA1 hash:
d7547ce372b2c0a25439f77ad98e1ddc2d5f1eda
Link:
https://www.unpac.me/results/663d5896-4541-49de-bf86-f3732a50f13b/
SH256 hash:
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
MD5 hash:
192639861e3dc2dc5c08bb8f8c7260d5
SHA1 hash:
58d30e460609e22fa0098bc27d928b689ef9af78
Link:
https://www.unpac.me/results/663d5896-4541-49de-bf86-f3732a50f13b/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/66a1be3919f3/report/overview.html
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/66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809

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:NSIS
Create hunting rule
Author:kevoreilly
Description:NSIS Integrity Check function
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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

Executable exe 66a1be3919f3f23710ebc6d58daf04e5abd52490f4a95993cea670cfc2314809

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/74842/

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