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Windows Analysis Report
Developer Services.js

Overview

General Information

Sample name:	Developer Services.js
Analysis ID:	1436907
MD5:	a68662fa8d98993d897e3473b3007e0b
SHA1:	935a9c8bc6d865382585a361617c145938ff6f72
SHA256:	4f0999aed5ae3438ace561c5c1024ce337bcdf2257c85bd6b726b0c99636cfa6
Infos:

Detection

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

Signatures

Sigma detected: WScript or CScript Dropper

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

Creates a process in suspended mode (likely to inject code)

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)

Sample execution stops while process was sleeping (likely an evasion)

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

Classification

Process Tree

System is w10x64

wscript.exe (PID: 6796 cmdline: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.js" MD5: A47CBE969EA935BDD3AB568BB126BC80)

cscript.exe (PID: 1888 cmdline: "C:\Windows\System32\cscript.exe" "Developer Services.js" MD5: 24590BF74BBBBFD7D7AC070F4E3C44FD)

conhost.exe (PID: 3052 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)

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\Developer Services.js", CommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.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: 2580, ProcessCommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.js", ProcessId: 6796, 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\Developer Services.js", CommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.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: 2580, ProcessCommandLine: C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.js", ProcessId: 6796, ProcessName: wscript.exe

Snort Signatures

⊘No Snort 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: Shell Automation Service HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{13709620-C279-11CE-A49E-444553540000}

Jump to behavior

Source: Developer Services.js

Initial sample: Strings found which are bigger than 50

Source: classification engine

Classification label: mal48.winJS@4/0@0/0

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

Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:3052:120:WilError_03

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

File read: C:\Users\user\Desktop\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: unknown	Process created: C:\Windows\System32\wscript.exe C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.js"
Source: C:\Windows\System32\wscript.exe	Process created: C:\Windows\System32\cscript.exe "C:\Windows\System32\cscript.exe" "Developer Services.js"
Source: C:\Windows\System32\cscript.exe	Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\wscript.exe	Process created: C:\Windows\System32\cscript.exe "C:\Windows\System32\cscript.exe" "Developer Services.js"	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: propsys.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: edputil.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: urlmon.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: srvcli.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: netutils.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: windows.staterepositoryps.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: sspicli.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: appresolver.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: bcp47langs.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: slc.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: sppc.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: onecorecommonproxystub.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: onecoreuapcommonproxystub.dll	Jump to behavior
Source: C:\Windows\System32\wscript.exe	Section loaded: pcacli.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: sfc_os.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: version.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: uxtheme.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: sxs.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: jscript.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: iertutil.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: amsi.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: userenv.dll	Jump to behavior
Source: C:\Windows\System32\cscript.exe	Section loaded: profapi.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: Developer Services.js

Static file information: File size 47681536 > 1048576

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

Last function: Thread delayed

Source: all processes

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

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

Process created: C:\Windows\System32\cscript.exe "C:\Windows\System32\cscript.exe" "Developer Services.js"

Jump to behavior

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	2 Scripting	Valid Accounts	Windows Management Instrumentation	2 Scripting	11 Process Injection	11 Process Injection	OS Credential Dumping	1 File and Directory 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	1 DLL Side-Loading	1 DLL Side-Loading	LSASS Memory	2 System Information 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)	1 Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	Steganography	Automated Exfiltration	Data Encrypted for Impact

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

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1436907
Start date and time:	2024-05-06 18:36:41 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 18s
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:	6
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:	Developer Services.js
Detection:	MAL
Classification:	mal48.winJS@4/0@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, SIHClient.exe, conhost.exe
Excluded domains from analysis (whitelisted): ocsp.digicert.com, slscr.update.microsoft.com, ctldl.windowsupdate.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.
Report size getting too big, too many NtQueryValueKey calls found.

File type:	ASCII text, with very long lines (65536), with no line terminators
Entropy (8bit):	5.667520541410878
TrID:
File name:	Developer Services.js
File size:	47'681'536 bytes
MD5:	a68662fa8d98993d897e3473b3007e0b
SHA1:	935a9c8bc6d865382585a361617c145938ff6f72
SHA256:	4f0999aed5ae3438ace561c5c1024ce337bcdf2257c85bd6b726b0c99636cfa6
SHA512:	916419791e6fecbe7151ea4767832edd32048e870e377181b0642df94239a82e022221184705fb698a0782f50a45f680f1ebe39fda4ffb1e6507289c475558a2
SSDEEP:	49152:o00000000000000000000000000000000000000000000000000000000000000P:
TLSH:	15A73AFE68EEC03189C931245A624E2DE71296C049C86511AF15EF8C3DADF6DD24B9F4
File Content Preview:	650560617905821433189172285812437710244084907636;singlen='*+B?3??.4I+w,E?E8Awb4u';function goldh(bsvgh, jzbnr){return yellow2(bsvgh,jzbnr,yyvt);}developm = 8160;yfkxy='?+tEE?ieceo?Trt) e/+nh?(';bad9='B+(Ow??k?hHj+c?f??)[k++5o?(?';function cufo(hcky, playy

File Icon


Icon Hash:	68d69b8bb6aa9a86

Target ID:	0
Start time:	18:37:46
Start date:	06/05/2024
Path:	C:\Windows\System32\wscript.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\Developer Services.js"
Imagebase:	0x7ff6efe30000
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

Target ID:	4
Start time:	18:38:05
Start date:	06/05/2024
Path:	C:\Windows\System32\cscript.exe
Wow64 process (32bit):	false
Commandline:	"C:\Windows\System32\cscript.exe" "Developer Services.js"
Imagebase:	0x7ff7b4d60000
File size:	161'280 bytes
MD5 hash:	24590BF74BBBBFD7D7AC070F4E3C44FD
Has elevated privileges:	false
Has administrator privileges:	false
Programmed in:	C, C++ or other language
Reputation:	moderate
Has exited:	true

Show Windows behavior

Target ID:	5
Start time:	18:38:05
Start date:	06/05/2024
Path:	C:\Windows\System32\conhost.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:	0x7ff7699e0000
File size:	862'208 bytes
MD5 hash:	0D698AF330FD17BEE3BF90011D49251D
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 inject code into processes in order to evade process-based defenses as well as possibly elevate privileges. Process injection is a method of executing arbitrary code in the address space of a separate live process. Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via process injection may also evade detection from security products since the execution is masked under a legitimate process.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	File: File Metadata, File: File Modification, Module: Module Load, Process: OS API Execution, Process: Process Access, Process: Process Metadata, Process: Process Modification
Platforms:	Linux, macOS, 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:	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 Developer Services.js

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Sigma Signatures

System Summary

Snort Signatures

Joe Sandbox Signatures

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

HIPS / PFW / Operating System Protection Evasion

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

Behavior

System Behavior

Analysis Process: wscript.exePID: 6796, Parent PID: 2580

General

Chronological Activities

Analysis Process: cscript.exePID: 1888, Parent PID: 6796

General

Chronological Activities

Analysis Process: conhost.exePID: 3052, Parent PID: 1888

General

Chronological Activities

Disassembly

Windows Analysis Report
Developer Services.js