MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 bdf381ab485d9bb8aaf0e7a29a36c86169cbbbd45e2de3da745210c8c3c4c011. 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: 11
| SHA256 hash: | bdf381ab485d9bb8aaf0e7a29a36c86169cbbbd45e2de3da745210c8c3c4c011 |
|---|---|
| SHA3-384 hash: | 7b91eb78a3e30420a5eae03419958ed7efb6039b39bb2812e8322d7e9e417361c27c6b554e9448e7da3e6b7bbbcd725f |
| SHA1 hash: | eebdffffeb769898430e22aa114eda1fbb3990ca |
| MD5 hash: | 24affdc190f0ad8bb3bd9e01be43f605 |
| humanhash: | gee-bravo-may-cola |
| File name: | bdf381ab485d9bb8aaf0e7a29a36c86169cbbbd45e2de3da745210c8c3c4c011 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 252'419 bytes |
| First seen: | 2026-06-08 09:30:18 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (587 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer) |
| ssdeep | 6144:ymGIhxAI6wc2Xy6Hc9GWq75BULNrue1XY4qcssCJ+gL1fQ6:l1AIE0HAa41InQ6 |
| TLSH | T133341210F291C577F9E1CA326C3757BE9F9A8D111001BF4B1341AA6874776E2A93FB88 |
| 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 | c4dadadad2f492c2 (148 x GuLoader, 51 x RemcosRAT, 23 x VIPKeylogger) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
65
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Detection:
n/a
Verdict:
Malicious
Score:
92.5%
Tags:
injection obfusc virus
Result
Verdict:
Malware
Maliciousness:
Behaviour
Restart of the analyzed sample
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Creating a window
Searching for the window
Creating a file
Creating a file in the %temp% subdirectories
Unauthorized injection to a recently created process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
anti-debug base64 base64 installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-11T02:33:00Z UTC
Last seen:
2026-06-08T08:43:00Z UTC
Hits:
~1000
Verdict:
Unknown
Score:
90%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.Runner
Status:
Suspicious
First seen:
2026-05-11 05:22:38 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
bdf381ab485d9bb8aaf0e7a29a36c86169cbbbd45e2de3da745210c8c3c4c011
MD5 hash:
24affdc190f0ad8bb3bd9e01be43f605
SHA1 hash:
eebdffffeb769898430e22aa114eda1fbb3990ca
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.79
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: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | telebot_framework |
|---|---|
| Author: | vietdx.mb |
| Rule name: | TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments |
| Reference: | https://cyfare.net/ |
| 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. |
| Rule name: | Win_FakeInstaller_PythonShellcodeLoader_Crepectl_2026 |
|---|---|
| Author: | SixHands |
| Description: | Detects the analyzed fake installer sample using .key config, XOR key, and Python/fiber shellcode loader traits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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