MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 764ef8523d5ab4f0bccae53480bbb507748d95692da2823b42eb214c0dad82e9. 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: | 764ef8523d5ab4f0bccae53480bbb507748d95692da2823b42eb214c0dad82e9 |
|---|---|
| SHA3-384 hash: | 527e350613f092ae950b488bff190ece52c65873c1de883c0ed89cc058a88728a89dfc2b576b4aa4ad6f8840724fc22b |
| SHA1 hash: | 74bda1fcc348468755f64a8d08d4ee101429d993 |
| MD5 hash: | 7dbd18b2a990191dd8236f130f51ce02 |
| humanhash: | pluto-cup-diet-avocado |
| File name: | 764ef8523d5ab4f0bccae53480bbb507748d95692da2823b42eb214c0dad82e9 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 923'824 bytes |
| First seen: | 2026-06-08 09:38:35 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 9a16e282eba7cc710070c0586c947693 (37 x GuLoader, 15 x RemcosRAT, 11 x VIPKeylogger) |
| ssdeep | 24576:zA7FU3luueOOLdPmlMeBEFmNZpJGSqQc3DKtbPik+G:zDJeOOLZmrDHVSKtTik+G |
| Threatray | 738 similar samples on MalwareBazaar |
| TLSH | T104152398F335831FE866D7B088694660DB74EEAC358A630F334971563CA32DA85253FD |
| 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 | 70e8f0d0f0f8f001 (6 x GuLoader, 1 x RemcosRAT) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
131
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Detection:
n/a
Verdict:
Malicious
Score:
92.5%
Tags:
injection obfusc virus
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Delayed reading of the file
Connection attempt
Creating a file
Deleting a recently created file
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context anti-debug fingerprint guloader installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed similar-threat
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-13T02:05:00Z UTC
Last seen:
2026-06-09T08:01:00Z UTC
Hits:
~100
Verdict:
Suspicious
Score:
99%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.Guloader
Status:
Suspicious
First seen:
2026-05-13 05:13:59 UTC
AV detection:
20 of 38 (52.63%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 728 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader installer
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
764ef8523d5ab4f0bccae53480bbb507748d95692da2823b42eb214c0dad82e9
MD5 hash:
7dbd18b2a990191dd8236f130f51ce02
SHA1 hash:
74bda1fcc348468755f64a8d08d4ee101429d993
SH256 hash:
a44ca08afb3f6bafd76aa35c259f3d599fe34f6f49ea5118626c1c1a540b0f03
MD5 hash:
81e268e27dbbcadbf116b5a9402195ab
SHA1 hash:
bd2b701b2e5e279786e179bceee2dc132a2afc37
Malware family:
GuLoader
Verdict:
Malicious
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| 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.
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