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Windows Analysis Report
app.js

Overview

General Information

Sample name:	app.js
Analysis ID:	1540522
MD5:	4128e6986decef9a51c622cdf46ff040
SHA1:	5c738033641d0faadf27480ad5e7175042a95c8b
SHA256:	76274ad152d007e38e60e90f31af0cfaf90d8b54fa40232673c5b0512fb3a3af
Infos:

Detection

Score:	56
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

JScript performs obfuscated calls to suspicious functions

Sigma detected: WScript or CScript Dropper

Windows Scripting host queries suspicious COM object (likely to drop second stage)

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

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: 7804 cmdline: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\app.js" 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\app.js", CommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\app.js", CommandLine|base64offset|contains: , Image: C:\Windows\System32\wscript.exe, NewProcessName: C:\Windows\System32\wscript.exe, OriginalFileName: C:\Windows\System32\wscript.exe, ParentCommandLine: , ParentImage: , ParentProcessId: 4056, ProcessCommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\app.js", ProcessId: 7804, 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\app.js", CommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\app.js", CommandLine|base64offset|contains: , Image: C:\Windows\System32\wscript.exe, NewProcessName: C:\Windows\System32\wscript.exe, OriginalFileName: C:\Windows\System32\wscript.exe, ParentCommandLine: , ParentImage: , ParentProcessId: 4056, ProcessCommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\app.js", ProcessId: 7804, 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

Windows Scripting host queries suspicious COM object (likely to drop second stage)

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

COM Object queried: Windows Script Host Shell Object HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{72C24DD5-D70A-438B-8A42-98424B88AFB8}

Jump to behavior

Source: classification engine

Classification label: mal56.evad.winJS@1/0@0/0

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

File read: C:\Users\desktop.ini

Jump to behavior

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: jscript.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: iertutil.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: scrrun.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: mpr.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: windows.storage.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: propsys.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: coremessaging.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\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32

Jump to behavior

Source: C:\Windows\System32\wscript.exe	Automated click: OK
Source: C:\Windows\System32\wscript.exe	Automated click: OK

Data Obfuscation

JScript performs obfuscated calls to suspicious functions

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

Anti Malware Scan Interface: CreateTextFile("Z:\syscalls\9431.js.csv");ITextStream.WriteLine(" entry:4 f:");ITextStream.WriteLine(" exec:7 f:");IWshShell3._00000000();ITextStream.WriteLine(" entry:43 o: f:Run a0:%22C%3A%5CUsers%5CPublic%5CDownloads%5Crun.bat%20C%3A%5CUsers%5CPublic%5CDownloads%5C%22 a1:0 a2:false");IWshShell3.Run("C:\Users\Public\Downloads\run.bat C:\Users\Public\Downloads\", "0", "false")

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: wscript.exe, 00000000.00000002.1469710641.000001BF328D9000.00000004.00000020.00020000.00000000.sdmp

Binary or memory string: _VMware_

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	11 Scripting	Valid Accounts	Windows Management Instrumentation	11 Scripting	1 DLL Side-Loading	1 DLL Side-Loading	OS Credential Dumping	1 Security Software 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	Rootkit	LSASS Memory	1 File and Directory Discovery	Remote Desktop Protocol	Data from Removable Media	Junk Data	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	2 System Information Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	Steganography	Automated Exfiltration	Data Encrypted for Impact

Behavior Graph

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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
app.js	0%	ReversingLabs

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1540522
Start date and time:	2024-10-23 21:23:52 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 2m 57s
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:	5
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 GSI enabled (Javascript) AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	app.js
Detection:	MAL
Classification:	mal56.evad.winJS@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: .js Stop behavior analysis, all processes terminated

Warnings

Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, SIHClient.exe, conhost.exe
Excluded domains from analysis (whitelisted): otelrules.azureedge.net, slscr.update.microsoft.com, ctldl.windowsupdate.com, time.windows.com, fe3cr.delivery.mp.microsoft.com
Not all processes where analyzed, report is missing behavior information
Report size getting too big, too many NtOpenKeyEx calls found.
Report size getting too big, too many NtProtectVirtualMemory calls found.
VT rate limit hit for: app.js

File type:	Unicode text, UTF-8 text, with CRLF line terminators
Entropy (8bit):	4.410584697662754
TrID:
File name:	app.js
File size:	387 bytes
MD5:	4128e6986decef9a51c622cdf46ff040
SHA1:	5c738033641d0faadf27480ad5e7175042a95c8b
SHA256:	76274ad152d007e38e60e90f31af0cfaf90d8b54fa40232673c5b0512fb3a3af
SHA512:	2d4bb4220b4dc1404f00a21a58c37c8edc74645ec240b18a073c91c491ae265dac47cee92669b93afdcb55c11d0ddd5c7411b99fc566f53764187137ce17df84
SSDEEP:	12:2sK1OjDBpVEa47BiVFg+JfN2zp48WfuG/4:2sK1OjDBbEa41iVFgEfNyW2s4
TLSH:	26E0860DEE4DA5956C36F3A9AB3B010DF9D201A31650D656784CB1905F7055801BDFF6
File Content Preview:	(function() {.. var a = "C:\\Users\\Public\\Downloads\\";.. var b = a + "run.bat";.. var c = a + "";.. var d = "WScript.Shell";.. var e = "...... ......: ";.... try {.. var f = new ActiveXObject(d);.. if (f) {..

File Icon


Icon Hash:	68d69b8bb6aa9a86

Target ID:	0
Start time:	15:24:55
Start date:	23/10/2024
Path:	C:\Windows\System32\wscript.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\app.js"
Imagebase:	0x7ff6328c0000
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

JavaScript Code

Call Graph

Executed
Not Executed

Script:

Code
0	( function () {	() ➔ undefined () ➔ undefined
1	var a = "C:\\Users\\Public\\Downloads\\";
2	var b = a + "run.bat";
3	var c = a + "";
4	var d = "WScript.Shell";
5	var e = "\x062d\x062f\x062b \x062e\x0637\x0623: ";
6	try
7	{
8	var f = new ActiveXObject ( d );
9	if ( f )
10	{
11	f.Run ( b + " " + c, 0, false );	Run("C:\Users\Public\Downloads\run.bat C:\Users\Public\Downloads\",0,false) ➔ undefined
12	}
13	else
14	{
15	}
16	}
17	catch ( g )
18	{
19	console.error ( e + g.message );
20	}
21	} ) ( );

Reset < >

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 get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software 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, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory 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:	Linux, macOS, Network, 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 app.js

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Sigma Signatures

System Summary

Suricata Signatures

Joe Sandbox Signatures

System Summary

Data Obfuscation

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: 7804, Parent PID: 4056

General

Chronological Activities

Disassembly

Code Analysis

JavaScript Code

Call Graph

Graph

Script:

Code

Windows Analysis Report
app.js