MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 55b96a791d1092846b3fc2ab30b4c2345252a88dce019ef18f3273e5852db821. 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: | 55b96a791d1092846b3fc2ab30b4c2345252a88dce019ef18f3273e5852db821 |
|---|---|
| SHA3-384 hash: | 2a5169dfb041ecaf2e5d895348dfb9429f8f01b913d3afd2922c1b7c196e2572da8dd360882e98d35fde33c7e9f27b21 |
| SHA1 hash: | 6c0b3fa962525580766e329c1538958804d7efd8 |
| MD5 hash: | f6a2345f0a35a4eb040ec97ddb2da126 |
| humanhash: | two-freddie-maryland-bravo |
| File name: | 55b96a791d1092846b3fc2ab30b4c2345252a88dce019ef18f3273e5852db821 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'161'872 bytes |
| First seen: | 2026-07-07 14:21:24 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 573bb7b41bc641bd95c0f5eec13c233b (66 x GuLoader, 32 x AgentTesla, 31 x RemcosRAT) |
| ssdeep | 24576:0TAjLnngPTgXHKPb/FLqmY8mdGlO4wIsk6EL5:iGrgLhPb/FLqzglO44s |
| TLSH | T1CB35AFB63B780186FA3DB4B2FB56B17026E3107D556DF02E32B2EB5640217B2154FA6C |
| 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 | d0d0ccccccfcf4c0 (3 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Kaffesurrogatfabrikkerne |
|---|---|
| Issuer: | Kaffesurrogatfabrikkerne |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-05-23T00:20:39Z |
| Valid to: | 2027-05-23T00:20:39Z |
| Serial number: | 71cb8f2ce1abc6c00de1f9dc111e039b4bfde805 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 64cb5a7d84904c44b652403cda489b496e000c3fe39c0cfb595ce97ba4766fc2 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
90
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Detection:
n/a
Verdict:
Malicious
Score:
90.2%
Tags:
injection virus blic
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Connection attempt to an infection source
Sending an HTTP GET request
DNS request
Connection attempt
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug fingerprint installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-10T22:16:00Z UTC
Last seen:
2026-07-06T18:48:00Z UTC
Hits:
~100
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2026-06-11 06:56:41 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
21 of 36 (58.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader adware discovery downloader persistence spyware
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
55b96a791d1092846b3fc2ab30b4c2345252a88dce019ef18f3273e5852db821
MD5 hash:
f6a2345f0a35a4eb040ec97ddb2da126
SHA1 hash:
6c0b3fa962525580766e329c1538958804d7efd8
SH256 hash:
4cf25411f28f639f72156c24b0f66ea42f5aee5973f6c137d901da6ae42d5b7e
MD5 hash:
4b8a750993567ac9a350ba9768fabfa0
SHA1 hash:
7ee7a8c313b292d62561b085c9d490c0f8065624
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.
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: | NSIS |
|---|---|
| Author: | kevoreilly |
| Description: | NSIS Integrity Check function |
| 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.
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