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Windows Analysis Report
L7kjcyPckT.vbs

Overview

General Information

Sample name:	L7kjcyPckT.vbs renamed because original name is a hash value
Original sample name:	a0771738725f59e58c1827f393b28bd3.vbs
Analysis ID:	1533051
MD5:	a0771738725f59e58c1827f393b28bd3
SHA1:	120c4777e4d3f0c2e2bacf51924dc1c0f4cc5fcc
SHA256:	510eb28ef36bcab2e83d57ff5e3a5fda79303ec9aa2442b39fe9a8790b0c138c
Tags:	vbsuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Potential malicious VBS script found (suspicious strings)

Sigma detected: WScript or CScript Dropper

Found WSH timer for Javascript or VBS script (likely evasive script)

Java / VBScript file with very long strings (likely obfuscated code)

Program does not show much activity (idle)

Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript

Classification

Process Tree

System is w10x64

wscript.exe (PID: 7404 cmdline: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80)

cleanup

Sigma Signatures

System Summary

Sigma detected: WScript or CScript Dropper

Source: Process started

Author: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community: Data: Command: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs", CommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs", CommandLine|base64offset|contains: , Image: C:\Windows\System32\wscript.exe, NewProcessName: C:\Windows\System32\wscript.exe, OriginalFileName: C:\Windows\System32\wscript.exe, ParentCommandLine: , ParentImage: , ParentProcessId: 2580, ProcessCommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs", ProcessId: 7404, ProcessName: wscript.exe

Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript

Source: Process started

Author: Michael Haag: Data: Command: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs", CommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs", CommandLine|base64offset|contains: , Image: C:\Windows\System32\wscript.exe, NewProcessName: C:\Windows\System32\wscript.exe, OriginalFileName: C:\Windows\System32\wscript.exe, ParentCommandLine: , ParentImage: , ParentProcessId: 2580, ProcessCommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs", ProcessId: 7404, ProcessName: wscript.exe

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

System Summary

Potential malicious VBS script found (suspicious strings)

Source:

Initial file: UAC.ShellExecute cmd, param, "", "runas", 1

Source: L7kjcyPckT.vbs

Initial sample: Strings found which are bigger than 50

Source: classification engine

Classification label: mal48.winVBS@1/0@0/0

Source: unknown

Process created: C:\Windows\System32\wscript.exe C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs"

Source: C:\Windows\System32\wscript.exe

Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Jump to behavior

Source: C:\Windows\System32\wscript.exe	Section loaded: version.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: uxtheme.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: sxs.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: vbscript.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: amsi.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: userenv.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: profapi.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: wldp.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: msasn1.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: cryptsp.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: rsaenh.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: cryptbase.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: msisip.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: wshext.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: scrobj.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: textshaping.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: textinputframework.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: coreuicomponents.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: coremessaging.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: ntmarta.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: wintypes.dll	Jump to behavior

Source: C:\Windows\System32\wscript.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{B54F3741-5B07-11cf-A4B0-00AA004A55E8}\InprocServer32

Jump to behavior

Source: C:\Windows\System32\wscript.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior
Source: C:\Windows\System32\wscript.exe	Process information set: NOOPENFILEERRORBOX			Jump to behavior

Source: C:\Windows\System32\wscript.exe

Window found: window name: WSH-Timer

Jump to behavior

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Source: C:\Windows\System32\wscript.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid

Jump to behavior

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	121 Scripting	Valid Accounts	Windows Management Instrumentation	121 Scripting	1 DLL Side-Loading	1 DLL Side-Loading	OS Credential Dumping	2 System Information Discovery	Remote Services	Data from Local System	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	1 DLL Side-Loading	Boot or Logon Initialization Scripts	1 Obfuscated Files or Information	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	Junk Data	Exfiltration Over Bluetooth	Network Denial of Service

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Source	Detection	Scanner	Label	Link
L7kjcyPckT.vbs	0%	ReversingLabs

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1533051
Start date and time:	2024-10-14 11:15:58 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 1m 51s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 x64 22H2 with Office Professional Plus 2019, Chrome 117, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
Number of analysed new started processes analysed:	1
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	HCA enabled EGA enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	L7kjcyPckT.vbs renamed because original name is a hash value
Original Sample Name:	a0771738725f59e58c1827f393b28bd3.vbs
Detection:	MAL
Classification:	mal48.winVBS@1/0@0/0
EGA Information:	Failed
HCA Information:	Successful, ratio: 100% Number of executed functions: 0 Number of non-executed functions: 0
Cookbook Comments:	Found application associated with file extension: .vbs Stop behavior analysis, all processes terminated

Warnings

VT rate limit hit for: L7kjcyPckT.vbs

File type:	ASCII text
Entropy (8bit):	4.907260534999909
TrID:
File name:	L7kjcyPckT.vbs
File size:	338 bytes
MD5:	a0771738725f59e58c1827f393b28bd3
SHA1:	120c4777e4d3f0c2e2bacf51924dc1c0f4cc5fcc
SHA256:	510eb28ef36bcab2e83d57ff5e3a5fda79303ec9aa2442b39fe9a8790b0c138c
SHA512:	a9500508e06ed0720598d5fc0de78ec054e925ff8ab6015bcfc8317da70ed6b8843055c8d7f6c9c992ce03e54e4298c88cb54d912a67ab04ee106b90d7f30392
SSDEEP:	6:jjBsLlMml7RWEFCEKtXmmFNhtYg/Ll5v+hFzblHLlpd/YhF5RFkSWNR4JrRGMpIl:PBElXRRrkygTl5mTzblrlu5RFdWP4Jri
TLSH:	26E026CA3A8847024B194EAB05242D0AFCA2092470158CC4D0DB9E100CADA79CB89F83
File Content Preview:	Set args = WScript.Arguments.If args.count=0 Then. wscript.echo "elevate.vbs <executable> <parameters>".Else. Set UAC = CreateObject("Shell.Application"). cmd = args(0). If args.count>=2 Then. param = args(1). For i = 2 to args.count-1. param = param

File Icon


Icon Hash:	68d69b8f86ab9a86

Target ID:	0
Start time:	05:16:49
Start date:	14/10/2024
Path:	C:\Windows\System32\wscript.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\L7kjcyPckT.vbs"
Imagebase:	0x7ff6f6e40000
File size:	170'496 bytes
MD5 hash:	A47CBE969EA935BDD3AB568BB126BC80
Has elevated privileges:	false
Has administrator privileges:	false
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Chronological Activities

Disassembly

⊘No disassembly

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may execute their own malicious payloads by side-loading DLLs. Similar to DLL Search Order Hijacking , side-loading involves hijacking which DLL a program loads. But rather than just planting the DLL within the search order of a program then waiting for the victim application to be invoked, adversaries may directly side-load their payloads by planting then invoking a legitimate application that executes their payload(s).
Tactics:	Defense Evasion, Persistence, Privilege Escalation
Data Sources:	File: File Creation, File: File Modification, Module: Module Load, Process: Process Creation
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Windows Analysis Report L7kjcyPckT.vbs

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Sigma Signatures

System Summary

Suricata Signatures

Joe Sandbox Signatures

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

Language, Device and Operating System Detection

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

General Information

Warnings

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

File Icon

Network Behavior

Statistics

CPU Usage

Memory Usage

High Level Behavior Distribution

back

System Behavior

Analysis Process: wscript.exePID: 7404, Parent PID: 2580

General

Chronological Activities

Disassembly

Windows Analysis Report
L7kjcyPckT.vbs