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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea
SHA3-384 hash: 4a0c59957a88ec398c19d0aba2e3ca00082c460cc78e30532d0b4f1b8ed20926d3f7b7995da84c91588b67494132e43f
SHA1 hash: fcbf464233343e24137b5ab1bfa6a1d2312652db
MD5 hash: 64a91fbc2d9ce65adf4579edd9c45e77
humanhash: bluebird-indigo-stairway-paris
File name:Request for Quotation - September 2026.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:387'913 bytes
First seen:2026-09-17 06:23:18 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 6144:K5UfFQOM5GBq18Cy+lRuGifVXVjz1FTpggrun5WD2s7/6q1uUmpjM68YM6TTyS:K5Pq+l8GifV7Lucd2q6
TLSH T15D845B20ED3406694F471BA9FDA50B62CABD8619462650F5FEEA030D60075FCE3FE768
Magika vba
Reporter threatcat_ch
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/86088/
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd lolbin
Link:
https://www.filescan.io/uploads/6aab8792e586e73089563af3/reports/8809f79d-9c62-4679-b53c-8ff7c0c92b86/overview
Verdict:
Suspicious
Labled as:
VBS/Agent.CJZ2
Link:
https://www.hybrid-analysis.com/sample/33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea
Verdict:
Malicious
File Type:
vbs
First seen:
2026-09-16T21:30:00Z UTC
Last seen:
2026-09-18T04:39:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea/results?tab=lookup
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1974079
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Obfuscated command line found
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1974079 Sample: Request for Quotation - Sep... Startdate: 17/09/2026 Architecture: WINDOWS Score: 100 27 drive.usercontent.google.com 2->27 29 drive.google.com 2->29 43 Malicious sample detected (through community Yara rule) 2->43 45 Yara detected GuLoader 2->45 47 Sigma detected: WScript or CScript Dropper 2->47 49 Joe Sandbox ML detected suspicious sample 2->49 9 wscript.exe 1 2->9         started        signatures3 process4 signatures5 51 VBScript performs obfuscated calls to suspicious functions 9->51 53 Wscript starts Powershell (via cmd or directly) 9->53 55 Obfuscated command line found 9->55 57 3 other signatures 9->57 12 cmd.exe 1 9->12         started        process6 signatures7 59 Wscript starts Powershell (via cmd or directly) 12->59 15 powershell.exe 1 16 12->15         started        19 conhost.exe 12->19         started        21 cmd.exe 1 12->21         started        process8 dnsIp9 31 drive.usercontent.google.com 192.178.164.132, 443, 49742 GOOGLE-GoogleLLCUS United States 15->31 33 drive.google.com 192.178.231.101, 443, 49741 GOOGLE-GoogleLLCUS United States 15->33 35 Writes to foreign memory regions 15->35 37 Found suspicious powershell code related to unpacking or dynamic code loading 15->37 39 Hides threads from debuggers 15->39 41 Switches to a custom stack to bypass stack traces 15->41 23 backgroundTaskHost.exe 15->23         started        25 backgroundTaskHost.exe 15->25         started        signatures10 process11
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea
Verdict:
Malware
YARA:
2 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated SOS: 0.32 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/64a91fbc2d9ce65adf4579edd9c45e77
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gp6cjoem6wgl6v43agg4qncftxjvdglbpsylvx56byykkyyqcdva._file
Verdict:
malicious
Label(s):
Remcos
Create hunting rule
Link:
https://reports.threatray.com/198b06a3-8fda-4d05-b0db-d8f53083ad80
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost collection discovery downloader execution rat
Link:
https://tria.ge/reports/260917-g57ycsyhlc/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Enumerates physical storage devices
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for C2
Checks computer location settings
Badlisted process makes network request
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Family: Guloader,Cloudeye
Family: Remcos
Malware Config
C2 Extraction:
102.220.163.42:2404
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/33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea

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:dependsonpythonailib
Create hunting rule
Author:Tim Brown
Description:Hunts for dependencies on Python AI libraries
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
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb

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 33fc24b88cf58cbf579b018dc834459dd35199617cb0badfbe0e30a5631010ea

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/86088/

Comments