MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71b66878e07f7fd1f045ee86c04af2d1ea63717de005893b04741b0fb236bf92. 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: 71b66878e07f7fd1f045ee86c04af2d1ea63717de005893b04741b0fb236bf92
SHA3-384 hash: 04fbb6ed07aec32accb7bc4fea74154850dc694ae760f8fc0257c44c5bf0c4fd64c86486e0106c6e034c36c7e22b9bc4
SHA1 hash: 5b121a2268c02083cade74c2ec9e849e4b88d9f0
MD5 hash: 4962e030bf8c54f9f62a77128f5e8514
humanhash: undress-lactose-spring-sodium
File name:izmir MA#111-24.vbs
Download: download sample
Signature GuLoader
File size:91'472 bytes
First seen:2024-01-12 13:11:31 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:5YdWJ2JF1qusEggFwJm4QV+1HCaViG/u187LrQ5G+P4:ydeW3qFED8mf0FZViGWa7LE5G+P4
TLSH T16393F4E0C9C536398A5E079AAE0144C1C7FB8528633580DCE999F36E1923D5CB7FF668
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
125
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm cmd evasive lolbin powershell wscript
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla, GuLoader
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Found malware configuration
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
Powershell uses Background Intelligent Transfer Service (BITS)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: MSBuild connects to smtp port
Suspicious execution chain found
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 AntiVM3
Yara detected GuLoader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1373725 Sample: izmir_MA#111-24.vbs Startdate: 12/01/2024 Architecture: WINDOWS Score: 100 31 mail.khadem-logistics.com 2->31 33 time.windows.com 2->33 35 4 other IPs or domains 2->35 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for URL or domain 2->57 59 5 other signatures 2->59 9 wscript.exe 1 2->9         started        12 svchost.exe 1 2 2->12         started        signatures3 process4 dnsIp5 61 VBScript performs obfuscated calls to suspicious functions 9->61 63 Suspicious powershell command line found 9->63 65 Wscript starts Powershell (via cmd or directly) 9->65 67 3 other signatures 9->67 15 powershell.exe 16 9->15         started        39 drive.google.com 142.251.163.139, 443, 49705, 49707 GOOGLEUS United States 12->39 41 drive.usercontent.google.com 142.251.167.132, 443, 49706, 49708 GOOGLEUS United States 12->41 43 127.0.0.1 unknown unknown 12->43 signatures6 process7 signatures8 77 Suspicious powershell command line found 15->77 79 Very long command line found 15->79 18 powershell.exe 19 15->18         started        21 conhost.exe 15->21         started        23 cmd.exe 1 15->23         started        process9 signatures10 45 Writes to foreign memory regions 18->45 47 Powershell uses Background Intelligent Transfer Service (BITS) 18->47 49 Maps a DLL or memory area into another process 18->49 51 Found suspicious powershell code related to unpacking or dynamic code loading 18->51 25 MSBuild.exe 8 18->25         started        29 cmd.exe 1 18->29         started        process11 dnsIp12 37 mail.khadem-logistics.com 94.75.226.217, 49722, 587 LEASEWEB-NL-AMS-01NetherlandsNL Netherlands 25->37 69 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 25->69 71 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 25->71 73 Tries to steal Mail credentials (via file / registry access) 25->73 75 Tries to harvest and steal browser information (history, passwords, etc) 25->75 signatures13
Threat name:
Script-WScript.Trojan.AgentTesla
Status:
Malicious
First seen:
2024-01-11 09:35:33 UTC
File Type:
Text (VBS)
AV detection:
7 of 37 (18.92%)
Threat level:
  5/5
Verdict:
malicious
Result
Malware family:
guloader
Score:
  10/10
Tags:
family:agenttesla family:guloader downloader keylogger spyware stealer trojan
Behaviour
NTFS ADS
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 71b66878e07f7fd1f045ee86c04af2d1ea63717de005893b04741b0fb236bf92

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments