MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4974c7f703bc826a655d542c19dcf0e61c9e8c64b2ff7a2f981fdae8adac615. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments

SHA256 hash: b4974c7f703bc826a655d542c19dcf0e61c9e8c64b2ff7a2f981fdae8adac615
SHA3-384 hash: fb0c6c0caa5e4e5434106fc3851ecc4383ad36ff7ddd9a317cd57dedde32dfbf4c2f68ae69824a85db975dd3d92c6ff8
SHA1 hash: 19bc6d54b65d7c2e886a4fd04b1f25763e05be59
MD5 hash: 17773da953115f9705fddd6463174749
humanhash: quebec-wolfram-quiet-oscar
File name:b4974c7f703bc826a655d542c19dcf0e61c9e8c64b2ff7a2f981fdae8adac615
Download: download sample
Signature GuLoader
File size:583'384 bytes
First seen:2025-11-06 10:14:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 46ce5c12b293febbeb513b196aa7f843 (35 x GuLoader, 21 x RemcosRAT, 5 x VIPKeylogger)
ssdeep 12288:YX4eIYT9HznBtOOLEx6YhLCdCgEMWevAnxVscgc801du:K4eIYZBxE06yVWevS6cBVu
Threatray 2'296 similar samples on MalwareBazaar
TLSH T1C9C41290A2F4CC17EDD01A708DB960B6EEE7AE814284D3024766BD2F7E715B1EE13257
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon d022d8c8f28f80c0 (38 x GuLoader, 12 x VIPKeylogger, 6 x Formbook)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Vouchers
Issuer:Vouchers
Algorithm:sha256WithRSAEncryption
Valid from:2025-09-19T00:55:55Z
Valid to:2026-09-19T00:55:55Z
Serial number: 1f3bc09f09ae4f07f96dc9af730d818377b7146e
Thumbprint Algorithm:SHA256
Thumbprint: cb6e75be0caf7da75a3925d0ded183e61359f4a062c5bca75ac99f9a5c2dc381
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence


File Origin
# of uploads :
1
# of downloads :
82
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b4974c7f703bc826a655d542c19dcf0e61c9e8c64b2ff7a2f981fdae8adac615.exe
Verdict:
Malicious activity
Analysis date:
2025-11-06 10:16:58 UTC
Tags:
snake keylogger evasion telegram stealer ims-api generic

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
94.9%
Tags:
injection injector virus
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Delayed reading of the file
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-09T10:28:00Z UTC
Last seen:
2025-11-06T05:32:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.GuLoader.sb Trojan.NSIS.Pakes.Krynis.sb PDM:Trojan.Win32.Generic VHO:Trojan-Downloader.Win32.Minix.gen Trojan-Downloader.Win32.Minix.sb Trojan-Downloader.Win32.Minix.cbr Trojan.NSIS.Makoob.sbb Trojan.NSIS.Makoob.sba Packed.NSIS.Krynis.sb
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-10-09 14:25:59 UTC
File Type:
PE (Exe)
Extracted files:
95
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Result
Malware family:
vipkeylogger
Score:
  10/10
Tags:
family:vipkeylogger collection discovery keylogger spyware stealer
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
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/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
VIPKeylogger
Vipkeylogger family
Malware Config
C2 Extraction:
https://api.telegram.org/bot8146726698:AAFWaTbmHzUN6pYeLzCeWChw7iGzEwehNUA/sendMessage?chat_id=7607347686
Unpacked files
SH256 hash:
b4974c7f703bc826a655d542c19dcf0e61c9e8c64b2ff7a2f981fdae8adac615
MD5 hash:
17773da953115f9705fddd6463174749
SHA1 hash:
19bc6d54b65d7c2e886a4fd04b1f25763e05be59
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
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_detect_tls_callbacks
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:pe_no_import_table
Description:Detect pe file that no import table

File information


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

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