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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2fbadefda1a712f3e22cbb3cde7138fd475f7515a7276548509b53a3c4947283. 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


Intelligence 11 IOCs YARA File information Comments

SHA256 hash: 2fbadefda1a712f3e22cbb3cde7138fd475f7515a7276548509b53a3c4947283
SHA3-384 hash: f1c639cf98843fe865a4b066e23911618a220f058d25f8eed9e274eddb4537a3dc99142be0e852669ecf9b1cc3799c77
SHA1 hash: e54ba6c0a0154099b19803af62f11404781adbae
MD5 hash: 2e6f96598ada23a58b924cc808d10e37
humanhash: fruit-cat-stream-nevada
File name:Booking-1050.vbs
Download: download sample
Signature GuLoader
File size:26'100 bytes
First seen:2026-10-01 14:53:56 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 384:Klz4ZCJ8V85X6BUgDV1oZ7Kco19MXXX/G60MMs/d5sZ9Ng5J4EHccdU58EP2oDWy:K4RV8AP5qIsu6/UF9DV
TLSH T1F6C2ED0688058BF41929355FBD7B7417AA1003A96B3C690D398BC17C3B7E7F08ADF5A6
Magika vba
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
105
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
96.5%
Tags:
xtreme shell sage
Verdict:
Malicious
File Type:
vbs
First seen:
2026-09-30T20:37:00Z UTC
Last seen:
2026-10-03T09:43:00Z UTC
Hits:
~100
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Antivirus detection for URL or domain
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Bypass UAC via Fodhelper.exe
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
UAC bypass detected (Fodhelper)
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected Telegram RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1980752 Sample: Booking-1050.vbs Startdate: 01/10/2026 Architecture: WINDOWS Score: 100 95 pki-goog.l.google.com 2->95 97 mr-b01.tm-azurefd.net 2->97 99 2 other IPs or domains 2->99 101 Suricata IDS alerts for network traffic 2->101 103 Malicious sample detected (through community Yara rule) 2->103 105 Antivirus detection for URL or domain 2->105 107 12 other signatures 2->107 10 wscript.exe 1 2->10         started        13 wscript.exe 2->13         started        15 wscript.exe 2->15         started        17 8 other processes 2->17 signatures3 process4 dnsIp5 111 VBScript performs obfuscated calls to suspicious functions 10->111 113 Suspicious powershell command line found 10->113 115 Wscript starts Powershell (via cmd or directly) 10->115 119 2 other signatures 10->119 20 powershell.exe 10->20         started        117 WScript reads language and country specific registry keys (likely country aware script) 13->117 23 powershell.exe 13->23         started        25 powershell.exe 15->25         started        93 127.0.0.1 unknown unknown 17->93 27 powershell.exe 17->27         started        29 powershell.exe 17->29         started        signatures6 process7 signatures8 109 Suspicious powershell command line found 20->109 31 AppLaunch.exe 2 4 20->31         started        34 powershell.exe 15 20->34         started        37 csc.exe 3 20->37         started        43 2 other processes 20->43 39 AppLaunch.exe 23->39         started        45 2 other processes 23->45 47 3 other processes 25->47 49 2 other processes 27->49 41 conhost.exe 29->41         started        process9 file10 121 UAC bypass detected (Fodhelper) 31->121 63 2 other processes 31->63 83 C:\ProgramData\aam.vbs, ASCII 34->83 dropped 51 conhost.exe 34->51         started        85 C:\Users\user\AppData\Local\...\kh1aj32t.dll, PE32 37->85 dropped 53 cvtres.exe 1 37->53         started        65 2 other processes 39->65 55 cmd.exe 1 43->55         started        57 conhost.exe 43->57         started        87 C:\Users\user\AppData\Local\...\uj0zm1g3.dll, PE32 45->87 dropped 59 cvtres.exe 45->59         started        89 C:\Users\user\AppData\Local\...\yrgmbma1.dll, PE32 47->89 dropped 67 3 other processes 47->67 91 C:\Users\user\AppData\Local\...\2jvhfpq0.dll, PE32 49->91 dropped 61 cvtres.exe 49->61         started        signatures11 process12 process13 69 taskkill.exe 1 55->69         started        71 taskkill.exe 1 55->71         started        73 taskkill.exe 1 55->73         started        75 conhost.exe 55->75         started        77 AppLaunch.exe 63->77         started        79 AppLaunch.exe 65->79         started        81 AppLaunch.exe 67->81         started       
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated SOS: 0.64 T1027 T1059 T1059.005 VBScript WScript.Network WScript.Shell
Threat name:
Script-WScript.Trojan.GuLoader
Status:
Malicious
First seen:
2026-09-30 23:52:35 UTC
File Type:
Text (VBS)
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection defense_evasion discovery execution persistence
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Executes a command shell one-liner
Executes a VBScript file via the Windows Script Host.
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Enumerates connected drives
Looks up external IP address via web service
Checks computer location settings
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Comments