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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 630ddc91cd4f3a41d32cc651c0cda29441a32e0d7efbfbb81a8462f5589e6661. 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: 13


Intelligence 13 IOCs YARA 5 File information Comments

SHA256 hash: 630ddc91cd4f3a41d32cc651c0cda29441a32e0d7efbfbb81a8462f5589e6661
SHA3-384 hash: 860a0db0c856619e12823463373d80ef2ed8d7ef435ea47188b80073beff593fc53baee495d38eff3e9aa1d6bdd9627e
SHA1 hash: f23c699a47d0b59f6ff5b8c2b6dfd02b2f45c326
MD5 hash: 2eeb9cd0b0805b9270a9c28eebac6376
humanhash: ten-georgia-april-six
File name:REMITTANCE ADVICE [REF0000360261].vbs
Download: download sample
Signature GuLoader
File size:82'026 bytes
First seen:2026-10-30 07:31:21 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:nlTfSsYXSm5uC75mXLmHYlSn/KCpnArYUjZ/Kb:nlDHYv5ugmXLm4lSn/7VArt/Kb
TLSH T1528306E398C021050A062A9DA84E07B1B6A90137D3DBFC6FF9DC7749108695EF2FAD75
Magika vba
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
116
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
70%
Tags:
infosteal shell spawn sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd lolbin obfuscated
Verdict:
Malicious
File Type:
vbs
First seen:
2026-10-29T16:11:00Z UTC
Last seen:
2026-11-01T00:55:00Z UTC
Hits:
~1000
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
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)
Multi AV Scanner detection for submitted file
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
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
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1995178 Sample: REMITTANCE ADVICE [REF00003... Startdate: 30/10/2026 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 Multi AV Scanner detection for submitted file 2->45 47 Yara detected GuLoader 2->47 49 3 other signatures 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 18 12->15         started        19 conhost.exe 12->19         started        21 cmd.exe 1 12->21         started        process8 dnsIp9 31 drive.google.com 142.251.215.206, 443, 49714 GOOGLE-GoogleLLCUS United States 15->31 33 drive.usercontent.google.com 142.251.41.1, 443, 49715 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 2 other signatures 15->41 23 backgroundTaskHost.exe 15->23         started        25 backgroundTaskHost.exe 15->25         started        signatures10 process11
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated SOS: 0.30 T1027 T1059.005 VBScript WScript.Shell
Threat name:
Script-WScript.Trojan.Qwexlafiba
Status:
Malicious
First seen:
2026-10-30 01:16:42 UTC
File Type:
Text (VBS)
AV detection:
12 of 38 (31.58%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost collection defense_evasion discovery downloader execution privilege_escalation rat
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
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 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: Guloader,Cloudeye
Family: Remcos
Malware Config
C2 Extraction:
103.83.86.178:2404
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:Cerberus
Author:Jean-Philippe Teissier / @Jipe_
Description:Cerberus
Rule name:dependsonpythonailib
Author:Tim Brown
Description:Hunts for dependencies on Python AI libraries
Rule name:detect_tiny_vbs
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:Guloader_VBScript
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts
Rule name:telebot_framework
Author:vietdx.mb

File information


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

Comments