MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 742d4eeaf5d2f058c8e38522ef496f6fae185af750540a25fbc43c784d9f23de. 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: 742d4eeaf5d2f058c8e38522ef496f6fae185af750540a25fbc43c784d9f23de
SHA3-384 hash: 42e44867adcd844175e8f918cc2fd9794245aef2903fec2b4ebe0deb155f3be05fdb725ab997df67f7f4c5ae3065f5f4
SHA1 hash: bd9493f8b7d9624ace1c10f201d6ca713e4fd162
MD5 hash: 6b19a73642c8e90ded0b5dd118f2291f
humanhash: king-colorado-december-glucose
File name:improvizat.vbs
Download: download sample
Signature GuLoader
File size:35'232 bytes
First seen:2023-10-31 06:50:52 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:vHunyZ9FF/S2MuPWqCHg2WHHKz64EuTxihFgdtCtQA8urqU:PzFLFc6CXdtCH8uOU
Threatray 928 similar samples on MalwareBazaar
TLSH T12FF2D4D6CB8421094A8A26A7DC4346368D6A809C77371B347FBCCE5E6243C7C46BF796
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
104
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm sload virus
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla, GuLoader
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Found suspicious powershell code related to unpacking or dynamic code loading
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive service information (via WMI, WIN32_SERVICE, often done to detect sandboxes)
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
VBScript performs obfuscated calls to suspicious functions
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1334671 Sample: improvizat.vbs Startdate: 31/10/2023 Architecture: WINDOWS Score: 100 24 novasolo.com 2->24 26 mail.novasolo.com 2->26 28 3 other IPs or domains 2->28 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus detection for URL or domain 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 2 other signatures 2->42 9 wscript.exe 1 2->9         started        signatures3 process4 signatures5 52 VBScript performs obfuscated calls to suspicious functions 9->52 54 Suspicious powershell command line found 9->54 56 Wscript starts Powershell (via cmd or directly) 9->56 58 3 other signatures 9->58 12 powershell.exe 16 9->12         started        process6 signatures7 60 Suspicious powershell command line found 12->60 62 Very long command line found 12->62 15 powershell.exe 21 12->15         started        18 conhost.exe 12->18         started        process8 signatures9 64 Writes to foreign memory regions 15->64 66 Maps a DLL or memory area into another process 15->66 68 Found suspicious powershell code related to unpacking or dynamic code loading 15->68 20 CasPol.exe 10 15->20         started        process10 dnsIp11 30 novasolo.com 144.208.75.106, 49738, 587 INMOTI-1US United States 20->30 32 googlehosted.l.googleusercontent.com 172.253.63.132, 443, 49737 GOOGLEUS United States 20->32 34 drive.google.com 172.253.63.138, 443, 49725, 49727 GOOGLEUS United States 20->34 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 20->46 48 Tries to steal Mail credentials (via file / registry access) 20->48 50 Tries to harvest and steal browser information (history, passwords, etc) 20->50 signatures12
Threat name:
Script-WScript.Trojan.GuLoader
Status:
Malicious
First seen:
2023-10-30 16:52:51 UTC
File Type:
Text (VBS)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Result
Malware family:
guloader
Score:
  10/10
Tags:
family:agenttesla family:guloader downloader keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
AgentTesla
Guloader,Cloudeye
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.

Malspam

GuLoader

Visual Basic Script (vbs) vbs 742d4eeaf5d2f058c8e38522ef496f6fae185af750540a25fbc43c784d9f23de

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments