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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4
SHA3-384 hash: f2c77a974ac846ac4be5580fc0d4f806b2742b5a3d1bb4201726c47b6a4dbddf7883202e04bb040c2f2e120abf07a4ff
SHA1 hash: 0b173fcc2087c6db71408f82ca840280b0f4be14
MD5 hash: 1df0b0d95f92f374976144616bae20a6
humanhash: violet-oxygen-floor-orange
File name:MV_Sunshine.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:17'887 bytes
First seen:2026-10-14 15:23:21 UTC
Last seen:2026-10-14 15:23:23 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 384:oyJMA3qgVNykZi+EU1NL+nDZVliVezVwsZz6:oLA6OBLlDL+Dn6ezTl6
TLSH T1B082E8F4FE81559CC58733AAE0594876E074927141313C28BEA8B685ED47BC8B67C58E
Magika vba
Reporter TomU
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
2
# of downloads :
111
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/91841/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad14f9df4e17c78f715fa18
Tags:
virus shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cloudeye cmd encrypted lolbin
Link:
https://www.filescan.io/uploads/6acf9ea885079cf7852f2893/reports/cd6eccb3-79ff-4351-bfb7-311c375e46fd/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4
Verdict:
Malicious
File Type:
vbs
First seen:
2026-09-24T18:48:00Z UTC
Last seen:
2026-10-16T13:49:00Z UTC
Hits:
~100000
Link:
https://opentip.kaspersky.com/b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4/results?tab=lookup
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated SOS: 0.36 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/1df0b0d95f92f374976144616bae20a6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4/
Threat name:
Script-WScript.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2026-09-25 00:55:49 UTC
File Type:
Text (VBS)
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp44ngu7p6rlx4ckpybvvbpgkqhcetvdszul5shkhccs3f5vfhka._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/261014-ss613sty7m/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Checks QEMU agent file
Checks computer location settings
Badlisted process makes network request
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4

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_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:Guloader_VBScript
Create hunting rule
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

Visual Basic Script (vbs) vbs b3f9c69a9f7fa2bbf04a7e035a85e6540e224ea39668bec8ea38852d97b529d4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/91841/

Comments