MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10. 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: 13
| SHA256 hash: | b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10 |
|---|---|
| SHA3-384 hash: | 61fc734a7ae7240e7abad5bec89e1910a275d83efe571cd069a21086b2eb6f38331a7fb70730e33fed0ff06f53c2fe60 |
| SHA1 hash: | 8110bbef9a6412e9ef951b8dad15e45f2b703140 |
| MD5 hash: | 65c4a63f6ba13e25a364557efc811621 |
| humanhash: | early-two-river-xray |
| File name: | Revised_PI_2024.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'310'816 bytes |
| First seen: | 2026-05-21 14:38:35 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7ed0d71376e55d58ab36dc7d3ffda898 (136 x GuLoader, 28 x RemcosRAT, 23 x AgentTesla) |
| ssdeep | 24576:uZbqxGFMhCGa7cQPUVN8EUehu7fIg83oD1dEUu28KkzFu7biF/z:+bqxGFMhCGa7cQOWEUiEMXLFgbid |
| Threatray | 2'030 similar samples on MalwareBazaar |
| TLSH | T1D555E0157B598D0EC2A36B798E58F37653648FCD3A16830296F1CCB7B9ACE87AD405C0 |
| 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 |
| File icon (PE): |  |
| dhash icon | c9e57133121a9680 (2 x GuLoader, 1 x SnakeKeylogger) |
| Reporter |  TomU |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Telefonabonnenter Rllikes |
|---|---|
| Issuer: | Telefonabonnenter Rllikes |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-06-29T00:40:30Z |
| Valid to: | 2027-06-29T00:40:30Z |
| Serial number: | 52a26400bb7948587ffa44fb5d9c39f2dd78036d |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 2512f7cb57a49e09e3c7aa37e357ff881a3ee603e837b8da2fd7579cd4f120b1 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
114
Origin country :
CHVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
an XOR decryption key and an extracted component
GuLoader
a c2 URL, a useragent string, and a string XOR key
NSIS
extracted archive contents
Detection:
n/a
Verdict:
Malicious
Score:
99.1%
Tags:
obfuscate rapid shell virus
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Launching a process
Using the Windows Management Instrumentation requests
Creating a file
Sending a custom TCP request
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug guloader installer installer installer-heuristic microsoft_visual_cc nsis powershell reconnaissance signed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2024-07-24T22:40:00Z UTC
Last seen:
2026-05-23T11:49:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sba Trojan-Dropper.Win32.Injector.sb Trojan-Downloader.Win32.Powedon.sb Trojan-Downloader.Win32.Minix.sb HEUR:Trojan.Win32.Fileless.gen PDM:Trojan.Win32.Generic
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2024-07-25 06:53:43 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
23 of 36 (63.89%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'020 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
8/10
Tags:
discovery execution persistence
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Checks computer location settings
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10
MD5 hash:
65c4a63f6ba13e25a364557efc811621
SHA1 hash:
8110bbef9a6412e9ef951b8dad15e45f2b703140
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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
Delivery method
Distributed via e-mail attachment
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