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Windows Analysis Report
test_sample.zip

Overview

General Information

Sample name:	test_sample.zip
Analysis ID:	1541924
MD5:	518aadbdab537e34d2447b55c60ce8a5
SHA1:	6998fd87906b269a3aa9f79ea34b58019f3b30b3
SHA256:	d7840d7673e23d80673792b451f095e4e2c656f8ea1e17f016b93340938e27a8
Infos:

Detection

Score:	0
Range:	0 - 100
Whitelisted:	false
Confidence:	80%

Signatures

Program does not show much activity (idle)

Classification

Process Tree

System is w10x64_ra

rundll32.exe (PID: 5200 cmdline: C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding MD5: EF3179D498793BF4234F708D3BE28633)

7ad889d43b865efd2dd27f116845fc7839db8d7b.exe (PID: 3048 cmdline: "C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe" MD5: 4DDF3F2935FA2606F6B2995838CC6201)

conhost.exe (PID: 504 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)

cleanup

Malware Configuration

⊘No configs have been found

Yara Signatures

⊘No yara matches

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

There are no malicious signatures, click here to show all signatures.

Source:

Binary string: D:\File_Transfer\04-Jul-18\assetbuild\1681204\ASSET\agent\windows\tcp\Service.pdb source: 7ad889d43b865efd2dd27f116845fc7839db8d7b

Source: classification engine

Classification label: clean0.winZIP@3/0@0/0

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

Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:504:120:WilError_03

Source: C:\Windows\System32\rundll32.exe

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

Jump to behavior

Source: unknown

Process created: C:\Windows\System32\rundll32.exe C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

Source: unknown	Process created: C:\Windows\System32\rundll32.exe C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Source: unknown	Process created: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe "C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe"
Source: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe	Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1

Source: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe	Section loaded: apphelp.dll	Jump to behavior
Source: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe	Section loaded: wininet.dll	Jump to behavior
Source: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe	Section loaded: wtsapi32.dll	Jump to behavior
Source: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe	Section loaded: oleacc.dll	Jump to behavior
Source: C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe	Section loaded: uxtheme.dll	Jump to behavior

Source:

Binary string: D:\File_Transfer\04-Jul-18\assetbuild\1681204\ASSET\agent\windows\tcp\Service.pdb source: 7ad889d43b865efd2dd27f116845fc7839db8d7b

Source: C:\Windows\System32\rundll32.exe

Process information set: NOOPENFILEERRORBOX

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

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 Process Injection	1 Rundll32	OS Credential Dumping	1 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	Boot or Logon Initialization Scripts	1 DLL Side-Loading	1 Process Injection	LSASS Memory	Application Window 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 DLL Side-Loading	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:	41.0.0 Charoite
Analysis ID:	1541924
Start date and time:	2024-10-25 10:22:39 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 2m 16s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultwindowsinteractivecookbook.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:	13
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:	EGA enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	test_sample.zip
Detection:	CLEAN
Classification:	clean0.winZIP@3/0@0/0
Cookbook Comments:	Found application associated with file extension: .zip

Warnings

Exclude process from analysis (whitelisted): dllhost.exe, SIHClient.exe, SgrmBroker.exe, svchost.exe
Excluded domains from analysis (whitelisted): fs.microsoft.com, slscr.update.microsoft.com, ctldl.windowsupdate.com, fe3cr.delivery.mp.microsoft.com
Not all processes where analyzed, report is missing behavior information
VT rate limit hit for: test_sample.zip

File type:	Zip archive data, at least v2.0 to extract, compression method=deflate
Entropy (8bit):	7.999689410907762
TrID:	ZIP compressed archive (8000/1) 100.00%
File name:	test_sample.zip
File size:	536'645 bytes
MD5:	518aadbdab537e34d2447b55c60ce8a5
SHA1:	6998fd87906b269a3aa9f79ea34b58019f3b30b3
SHA256:	d7840d7673e23d80673792b451f095e4e2c656f8ea1e17f016b93340938e27a8
SHA512:	97d30351688b4e0a2649653ef97f3804f13f03ed6692a029a0cdfe3958e14dbf4ee4f3b36f7f97fc011304841aaea3b86db5f5f6afd5bc5189fb8fadbd7226a8
SSDEEP:	12288:AHgQqkRKLShQe2dXHxUuugEc8RdgYuqqeYmgnzpP:Ygw9yhdXxHNEcqdgcYPP
TLSH:	A5B433EAEFA7327186E1D1F60F48EAA1C40A7F2982CEA5B7C1E1C05550FD044685BFD9
File Content Preview:	PK.........BYY..\|EK/...P .(.$.7ad889d43b865efd2dd27f116845fc7839db8d7b.. .........1w5..&..1w5..&..)w5..&....`...%....%I....B..1.....U.7O..uP?...lo....I&.b`...[....].A3.,{L`.d._...].8..8..[g.pN]...........^.Q.%...%...!.,..."a7.....x.....{.D.&z...0.e..})...

File Icon


Icon Hash:	1c1c1e4e4ececedc

Target ID:	0
Start time:	04:23:11
Start date:	25/10/2024
Path:	C:\Windows\System32\rundll32.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Imagebase:	0x7ff7faf20000
File size:	71'680 bytes
MD5 hash:	EF3179D498793BF4234F708D3BE28633
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:	11
Start time:	04:23:50
Start date:	25/10/2024
Path:	C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe
Wow64 process (32bit):	true
Commandline:	"C:\Users\user\Desktop\7ad889d43b865efd2dd27f116845fc7839db8d7b.exe"
Imagebase:	0x400000
File size:	2'117'632 bytes
MD5 hash:	4DDF3F2935FA2606F6B2995838CC6201
Has elevated privileges:	false
Has administrator privileges:	false
Programmed in:	C, C++ or other language
Reputation:	low
Has exited:	true

Show Windows behavior

Target ID:	12
Start time:	04:23:50
Start date:	25/10/2024
Path:	C:\Windows\System32\conhost.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:	0x7ff772470000
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:	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 abuse rundll32.exe to proxy execution of malicious code. Using rundll32.exe, vice executing directly (i.e. Shared Modules ), may avoid triggering security tools that may not monitor execution of the rundll32.exe process because of allowlists or false positives from normal operations. Rundll32.exe is commonly associated with executing DLL payloads (ex: `rundll32.exe {DLLname, DLLfunction}` ).
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Metadata, Module: Module Load, Process: Process Creation
Platforms:	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 test_sample.zip

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Sigma Signatures

Suricata Signatures

Joe Sandbox Signatures

Compliance

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

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: rundll32.exePID: 5200, Parent PID: 804

General

Chronological Activities

Analysis Process: 7ad889d43b865efd2dd27f116845fc7839db8d7b.exePID: 3048, Parent PID: 4552

General

Chronological Activities

Analysis Process: conhost.exePID: 504, Parent PID: 3048

General

Chronological Activities

Disassembly

Windows Analysis Report
test_sample.zip