MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 40b64fa3728fc26d2fd93e659a85831142bed1da35bd5ce3033b99dc33f60d1d. 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
| SHA256 hash: | 40b64fa3728fc26d2fd93e659a85831142bed1da35bd5ce3033b99dc33f60d1d |
|---|---|
| SHA3-384 hash: | 881a371e72142c6d2be8fdb51d30dc179e50a115d6079c5508db95ea42ac3dd9db89c85de85ec646da5dc7f5523af008 |
| SHA1 hash: | d42812e935b525a0e09746d4aa07ff4d28c28c84 |
| MD5 hash: | fa97dd654781c41b517c1e5f003f2ce3 |
| humanhash: | fix-cardinal-saturn-oscar |
| File name: | 40b64fa3728fc26d2fd93e659a85831142bed1da35bd5ce3033b99dc33f60d1d |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'081'944 bytes |
| First seen: | 2025-10-09 12:33:27 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 573bb7b41bc641bd95c0f5eec13c233b (66 x GuLoader, 32 x AgentTesla, 31 x RemcosRAT) |
| ssdeep | 24576:B+RcTuU3pKRwtXTP6NCcYOE29UUpP2mjIjewZJ4gi20H:8iSU3p0yXTeCcvE29TP2mXwX4gz0 |
| Threatray | 2'050 similar samples on MalwareBazaar |
| TLSH | T19F3523217BE28919D9994130C06F3522E3F26EB3F9367D8B5B0D7E143A337867416B68 |
| 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 | 11e8aa33ec96c460 (1 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | terminsrenter |
|---|---|
| Issuer: | terminsrenter |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-07-25T02:35:32Z |
| Valid to: | 2026-07-25T02:35:32Z |
| Serial number: | 117ba848bdaeab76eaeacae128e6016cada109c6 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | cf4a070ff538f5a34509a0976060d1ca899250fbabc22bb4bc058fa3c5bcc864 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
99
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
40b64fa3728fc26d2fd93e659a85831142bed1da35bd5ce3033b99dc33f60d1d
Verdict:
Malicious activity
Analysis date:
2025-10-09 12:33:18 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
70%
Tags:
injection obfusc
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Searching for the window
Creating a file
Delayed reading of the file
Sending a custom TCP request
Verdict:
Unknown
Threat level:
2.5/10
Confidence:
100%
Tags:
adaptive-context installer microsoft_visual_cc obfuscated overlay signed
Verdict:
Malicious
Labled as:
Tedy.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-08T06:31:00Z UTC
Last seen:
2025-10-11T10:20:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbb Trojan.NSIS.Makoob.sba Trojan.NSIS.Makoob.ky Packed.NSIS.Krynis.sb
Malware family:
WinEdt Team
Verdict:
Unknown
Score:
99%
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
Verdict:
Malicious
Threat:
Trojan.NSIS.Makoob
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2025-09-08 12:59:34 UTC
File Type:
PE (Exe)
Extracted files:
11
AV detection:
17 of 24 (70.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'040 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
40b64fa3728fc26d2fd93e659a85831142bed1da35bd5ce3033b99dc33f60d1d
MD5 hash:
fa97dd654781c41b517c1e5f003f2ce3
SHA1 hash:
d42812e935b525a0e09746d4aa07ff4d28c28c84
SH256 hash:
b1350f487692057c8ffde75dcc55287a52a3272240d4d4912f24464b27551fc0
MD5 hash:
8f0e7415f33843431df308bb8e06af81
SHA1 hash:
1314272e6ad3be1985d4a1607b890a34b0bde8b5
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
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 |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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