MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8a66296460548cb5512cfabca9cd3ef2333fbe495ad99ddcccc0701791f30928. 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: | 8a66296460548cb5512cfabca9cd3ef2333fbe495ad99ddcccc0701791f30928 |
|---|---|
| SHA3-384 hash: | e7f611ec68c11b7b8b499f6bb4950013e9c234087c84b87963aa422cc5781b655d72de40c85eb766e6a666da04e03f95 |
| SHA1 hash: | d31c43561cbd38ed87ab829b00dbf1fc1f166e0b |
| MD5 hash: | 5f97c750ddfaff9e6ad0ed8b36932abf |
| humanhash: | paris-moon-echo-cola |
| File name: | 8a66296460548cb5512cfabca9cd3ef2333fbe495ad99ddcccc0701791f30928 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 291'992 bytes |
| First seen: | 2026-05-08 12:32:42 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 9a16e282eba7cc710070c0586c947693 (37 x GuLoader, 15 x RemcosRAT, 11 x VIPKeylogger) |
| ssdeep | 6144:4fYEbKkobtvU5+xxLC/RPBoqB1tyeTtLB1U+R69:2bkBUqwlf1tyeTtLr49 |
| Threatray | 126 similar samples on MalwareBazaar |
| TLSH | T16954122973A0C0B7EE254A331FBBA3BA06F0D62D41D5E79307A86B5D7C23BD0481E546 |
| 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 signed |
Code Signing Certificate
| Organisation: | Bugfinners |
|---|---|
| Issuer: | Bugfinners |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-03-06T02:54:52Z |
| Valid to: | 2027-03-06T02:54:52Z |
| Serial number: | 8f7eed152c6ce34169390010f20ba383147979 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 953e44e418be593604f0013391df324bccaa6df5a650cb29d46d15286515f45e |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
102
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-05-08 14:58:00 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Gathering data
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file
Creating a file in the %temp% subdirectories
Delayed reading of the file
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Unknown
Threat level:
2.5/10
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:
2026-04-03T03:08:00Z UTC
Last seen:
2026-05-05T02:45:00Z UTC
Hits:
~100
Verdict:
Suspicious
Score:
99%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2026-04-03 10:42:19 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
19 of 36 (52.78%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 116 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery installer
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks installed software on the system
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Unpacked files
SH256 hash:
8a66296460548cb5512cfabca9cd3ef2333fbe495ad99ddcccc0701791f30928
MD5 hash:
5f97c750ddfaff9e6ad0ed8b36932abf
SHA1 hash:
d31c43561cbd38ed87ab829b00dbf1fc1f166e0b
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.
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: | 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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