MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 73763f1e185e783f42d48007efb4ea67d05196a461971129e78d3cb3f4c8f6c4. 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: 15
| SHA256 hash: | 73763f1e185e783f42d48007efb4ea67d05196a461971129e78d3cb3f4c8f6c4 |
|---|---|
| SHA3-384 hash: | f2d98f26e221c4b0b8b74d6e710b78113298fe30c9bbb091e8dfb0a5b0c31881db2c2be452da1cbd612a0954e18896ec |
| SHA1 hash: | 5a19d5594367ab9f9569f59647b9eabc1f518599 |
| MD5 hash: | 95ad8ace17378ea25cc895203e972b13 |
| humanhash: | charlie-sink-louisiana-venus |
| File name: | 73763f1e185e783f42d48007efb4ea67d05196a461971129e78d3cb3f4c8f6c4 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 857'349 bytes |
| First seen: | 2025-12-08 15:40:24 UTC |
| Last seen: | 2026-01-09 15:02:38 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 46ce5c12b293febbeb513b196aa7f843 (42 x GuLoader, 21 x RemcosRAT, 13 x AgentTesla) |
| ssdeep | 12288:CX4iA5wFgULpsCntsAOBTmqjy2UAfBjxOv6F8e/khWdvVVLYliDJ3ak:84rw6UsCTO8oTBjEZeMsdvcliD0 |
| Threatray | 2'483 similar samples on MalwareBazaar |
| TLSH | T1E30512707B8CF926C9E81B3159119655F1EE8D6170450E4BFB923E27BBBB34F4861E80 |
| 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 | bbf8fafafee256ae (2 x GuLoader, 1 x Formbook) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
2
# of downloads :
100
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Malware family:
guloader
ID:
1
File name:
73763f1e185e783f42d48007efb4ea67d05196a461971129e78d3cb3f4c8f6c4
Verdict:
Malicious activity
Analysis date:
2025-12-09 02:16:59 UTC
Tags:
guloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
92.5%
Tags:
injection obfusc virus
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-24T04:05:00Z UTC
Last seen:
2025-12-10T11:46:00Z UTC
Hits:
~1000
Gathering data
Score:
97%
Verdict:
Malware
File Type:
PE
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:
2025-11-24 07:28:08 UTC
File Type:
PE (Exe)
Extracted files:
33
AV detection:
25 of 36 (69.44%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'473 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
SH256 hash:
73763f1e185e783f42d48007efb4ea67d05196a461971129e78d3cb3f4c8f6c4
MD5 hash:
95ad8ace17378ea25cc895203e972b13
SHA1 hash:
5a19d5594367ab9f9569f59647b9eabc1f518599
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_detect_tls_callbacks |
|---|
| 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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