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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5d8622916278262beb71f0d36c1d7c941fea4e1c69b2baf037dc5cb64025776. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5d8622916278262beb71f0d36c1d7c941fea4e1c69b2baf037dc5cb64025776
SHA3-384 hash: 9403feaeabc12274d8838ca35509ad6348a06462a5a4b1e190ab28feed319a3c0f22ff4502a5dcfaf9814d952c0bd086
SHA1 hash: e17f92d7c67685b646619f6d124466aab5d5dc67
MD5 hash: 8a1130565da64f80af677f964bd53331
humanhash: winter-west-cat-earth
File name:RFQ_6000412697.vbe
Download: download sample
Signature GuLoader
Create hunting rule
File size:16'520 bytes
First seen:2026-10-12 07:58:11 UTC
Last seen:Never
File type:Visual Basic Script (vbe) vbe
MIME type:text/plain
ssdeep 384:5l42muNbW5++u7xchCs3YSl0hG87vLv2J9ZTxd:5q2peMcUjhG8LGT
TLSH T1EB72A112F7562C313F8A3F4256ABCD06C13122746076762DBBA891FC7CBB9583BE8558
Magika vba
Reporter abuse_ch
Tags:GuLoader vbe

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd lolbin obfuscated
Link:
https://www.filescan.io/uploads/6acc931bbf66bb26f8074bbe/reports/de55541f-8c96-4cf8-a77c-c26fd0dcb8c8/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b5d8622916278262beb71f0d36c1d7c941fea4e1c69b2baf037dc5cb64025776
Verdict:
Malicious
File Type:
vbs
First seen:
2026-10-11T22:34:00Z UTC
Last seen:
2026-10-14T06:35:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/b5d8622916278262beb71f0d36c1d7c941fea4e1c69b2baf037dc5cb64025776/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/1985820
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Obfuscated command line found
Powershell connects to network
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
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: 1985820 Sample: RFQ_6000412697.vbe Startdate: 12/10/2026 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 Wscript starts Powershell (via cmd or directly) 9->51 53 Obfuscated command line found 9->53 55 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->55 57 2 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 18 12->15         started        19 conhost.exe 12->19         started        21 cmd.exe 1 12->21         started        process8 dnsIp9 31 drive.usercontent.google.com 142.251.210.33, 443, 49739 GOOGLE-GoogleLLCUS United States 15->31 33 drive.google.com 142.251.210.46, 443, 49738 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 Switches to a custom stack to bypass stack traces 15->39 41 Powershell connects to network 15->41 23 backgroundTaskHost.exe 15->23         started        25 backgroundTaskHost.exe 15->25         started        signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b5d8622916278262beb71f0d36c1d7c941fea4e1c69b2baf037dc5cb64025776
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated SOS: 0.30 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/8a1130565da64f80af677f964bd53331
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5d8622916278262beb71f0d36c1d7c941fea4e1c69b2baf037dc5cb64025776/
Threat name:
Win32.Trojan.Qwexlafiba
Create hunting rule
Status:
Malicious
First seen:
2026-10-12 04:14:13 UTC
File Type:
Text (VBS)
AV detection:
11 of 23 (47.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wxmgekiwe6bgfpvxd4gtnqoxzfa75jhby2nsxlydpxc4wzack53a._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection defense_evasion discovery execution privilege_escalation rat
Link:
https://tria.ge/reports/261012-jt2nbax17j/
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
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for C2
Checks computer location settings
Badlisted process makes network request
Family: Remcos
Malware Config
C2 Extraction:
130.12.182.201:2404
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: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.

Comments