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Windows Analysis Report
runner_4.dll

Overview

General Information

Sample name:	runner_4.dll
Analysis ID:	1672103
MD5:	23e055017d9d9c02a07e77641cff22fe
SHA1:	681b0f850754a358f1a5a2bba8b58874e40ae0fe
SHA256:	1198f07a1d24c0c241e68feb0077750240c4e88a368e797903639d17dc63e077
Tags:	dlluser-malrpt
Infos:

Detection

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

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

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

Program does not show much activity (idle)

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

Uses 32bit PE files

Classification

Process Tree

System is w10x64

loaddll32.exe (PID: 6312 cmdline: loaddll32.exe "C:\Users\user\Desktop\runner_4.dll" MD5: 51E6071F9CBA48E79F10C84515AAE618)

conhost.exe (PID: 6296 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)

cmd.exe (PID: 5736 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B)

rundll32.exe (PID: 6512 cmdline: rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1 MD5: 889B99C52A60DD49227C5E485A016679)

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

AV Detection

Antivirus / Scanner detection for submitted sample

Source: runner_4.dll

Avira: detected

Multi AV Scanner detection for submitted file

Source: runner_4.dll	Virustotal: Detection: 93%			Perma Link
Source: runner_4.dll	ReversingLabs: Detection: 94%

Source: runner_4.dll

Static PE information: EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, DLL

Source: runner_4.dll

Static PE information: EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, DLL

Source: classification engine

Classification label: mal56.winDLL@6/0@0/0

Source: C:\Windows\System32\conhost.exe	Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:6296:120:WilError_03
Source: C:\Windows\SysWOW64\rundll32.exe	Mutant created: \Sessions\1\BaseNamedObjects\INTEL_CEDR_STORE

Source: runner_4.dll

Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ

Source: C:\Windows\System32\loaddll32.exe

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

Jump to behavior

Source: C:\Windows\SysWOW64\cmd.exe

Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1

Source: runner_4.dll	Virustotal: Detection: 93%
Source: runner_4.dll	ReversingLabs: Detection: 94%

Source: unknown	Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\runner_4.dll"
Source: C:\Windows\System32\loaddll32.exe	Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll32.exe	Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1
Source: C:\Windows\SysWOW64\cmd.exe	Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1
Source: C:\Windows\System32\loaddll32.exe	Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1	Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe	Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1	Jump to behavior

Source: C:\Windows\System32\loaddll32.exe	Section loaded: apphelp.dll	Jump to behavior
Source: C:\Windows\System32\loaddll32.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe	Section loaded: apphelp.dll	Jump to behavior

Source: C:\Windows\SysWOW64\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: C:\Windows\System32\conhost.exe

Last function: Thread delayed

Source: C:\Windows\System32\loaddll32.exe

Thread delayed: delay time: 120000

Jump to behavior

Source: all processes

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

Source: C:\Windows\SysWOW64\cmd.exe

Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1

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	11 Process Injection	1 Rundll32	OS Credential Dumping	1 Virtualization/Sandbox Evasion	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 Virtualization/Sandbox Evasion	LSASS Memory	1 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)	11 Process Injection	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	Steganography	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	1 DLL Side-Loading	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	Protocol Impersonation	Traffic Duplication	Data Destruction

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
runner_4.dll	93%	Virustotal		Browse
runner_4.dll	94%	ReversingLabs	Win32.Worm.Ramnit
runner_4.dll	100%	Avira	W32/Run.Ramnit.C

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1672103
Start date and time:	2025-04-23 15:25:37 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 52s
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
Run name:	Run with higher sleep bypass
Number of analysed new started processes analysed:	16
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:	runner_4.dll
Detection:	MAL
Classification:	mal56.winDLL@6/0@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: .dll Sleeps bigger than 100000000ms are automatically reduced to 1000ms Sleep loops longer than 100000000ms are bypassed. Single calls with delay of 100000000ms and higher are ignored

Warnings

Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, sppsvc.exe, WMIADAP.exe, SIHClient.exe, SgrmBroker.exe, conhost.exe, svchost.exe
Excluded IPs from analysis (whitelisted): 20.109.210.53, 184.29.183.29
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

File type:	PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Entropy (8bit):	2.5048171687458565
TrID:	Win32 Dynamic Link Library (generic) (1002004/3) 99.60% Generic Win/DOS Executable (2004/3) 0.20% DOS Executable Generic (2002/1) 0.20% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
File name:	runner_4.dll
File size:	3'584 bytes
MD5:	23e055017d9d9c02a07e77641cff22fe
SHA1:	681b0f850754a358f1a5a2bba8b58874e40ae0fe
SHA256:	1198f07a1d24c0c241e68feb0077750240c4e88a368e797903639d17dc63e077
SHA512:	c81c3a734425bf1eafb9c3b24988f62252e01c0a08f849f8260281f7444d5ab1e89ec03c5e83c377a3cc6e922e2e2faf1635eb6fd62ccd8a207e1d8a9bbc5e03
SSDEEP:	24:eH1GSY19vPQeDR21SMwh0tYPFThtdnIUovRidLYH/B/gUt:yY/gqQ1hWMStdnapidc55
TLSH:	7F714423B75648F3D7054F300B4B4982E2FFD23A0374481C4F0556193EE22A6E72AF49
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......^7...Vl..Vl..Vl..v~..Vl..I...Vl.Rich.Vl.................PE..L...S..L...........!......................... .....................

File Icon


Icon Hash:	7ae282899bbab082

Static PE Info

General

Entrypoint:	0x10001184
Entrypoint Section:	.text
Digitally signed:	false
Imagebase:	0x10000000
Subsystem:	windows gui
Image File Characteristics:	EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, DLL
DLL Characteristics:
Time Stamp:	0x4CD1C353 [Wed Nov 3 20:17:23 2010 UTC]
TLS Callbacks:
CLR (.Net) Version:
OS Version Major:	4
OS Version Minor:	0
File Version Major:	4
File Version Minor:	0
Subsystem Version Major:	4
Subsystem Version Minor:	0
Import Hash:	b6f391375d741ab65301de3824d105be

Entrypoint Preview

Instruction
push ebp
mov ebp, esp
add esp, FFFFFEF4h
cmp dword ptr [ebp+0Ch], 01h
jne 00007F451C7F5AFBh
push 10003002h
call 00007F451C7F59EBh
or eax, eax
je 00007F451C7F5AE6h
mov dword ptr [ebp-08h], eax
push 00000104h
lea eax, dword ptr [ebp-0000010Ch]
push eax
push dword ptr [ebp+08h]
call 00007F451C7F5B0Bh
lea eax, dword ptr [ebp-0000010Ch]
push eax
call 00007F451C7F596Fh
mov edi, eax
push 10003013h
push edi
call 00007F451C7F5AFEh
lea eax, dword ptr [ebp-0000010Ch]
push eax
call 00007F451C7F59FCh
push dword ptr [ebp-08h]
call 00007F451C7F5986h
mov eax, 00000001h
jmp 00007F451C7F5AB8h
cmp dword ptr [ebp+0Ch], 00000000h
jne 00007F451C7F5AA4h
jmp 00007F451C7F5AB0h
cmp dword ptr [ebp+0Ch], 02h
jne 00007F451C7F5AA4h
jmp 00007F451C7F5AA8h
cmp dword ptr [ebp+0Ch], 03h
jne 00007F451C7F5AA2h
leave
retn 000Ch
jmp dword ptr [10002000h]
jmp dword ptr [10002004h]
jmp dword ptr [10002008h]
jmp dword ptr [1000200Ch]
jmp dword ptr [10002010h]
jmp dword ptr [10002014h]
jmp dword ptr [10002018h]
jmp dword ptr [1000201Ch]
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x2100	0x33	.rdata
IMAGE_DIRECTORY_ENTRY_IMPORT	0x2024	0x28	.rdata
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x0	0x0
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BASERELOC	0x4000	0x20	.reloc
IMAGE_DIRECTORY_ENTRY_DEBUG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COPYRIGHT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_GLOBALPTR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_TLS	0x0	0x0
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IAT	0x2000	0x24	.rdata
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_RESERVED	0x0	0x0

Sections

Name	Virtual Address	Virtual Size	Raw Size	MD5	Xored PE	ZLIB Complexity	File Type	Entropy	Characteristics
.text	0x1000	0x236	0x400	3f45a5a912cd87951e4b969fa06a1d42	False	0.4130859375	data	3.7060976412647846	IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
.rdata	0x2000	0x133	0x200	36d40f34d9ca870f8f6d54ad2f0649e4	False	0.37890625	data	2.6989725548032055	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.data	0x3000	0x12e	0x200	09a4307233a374700348d2823866a00a	False	0.107421875	data	0.7390096302589004	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.reloc	0x4000	0x34	0x200	3c211ac96cc90a1e7fb292683a6ac246	False	0.083984375	data	0.4243571372193959	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ

Imports

DLL	Import
kernel32.dll	CloseHandle, CreateMutexA, CreateProcessA, GetLastError, GetModuleFileNameA, ReleaseMutex, lstrcpyA, lstrlenA

• loaddll32.exe
• conhost.exe
• cmd.exe
• rundll32.exe

Click to jump to process

Memory Usage

• loaddll32.exe
• conhost.exe
• cmd.exe
• rundll32.exe

Click to jump to process

Click to jump to process

Target ID:	0
Start time:	09:26:27
Start date:	23/04/2025
Path:	C:\Windows\System32\loaddll32.exe
Wow64 process (32bit):	true
Commandline:	loaddll32.exe "C:\Users\user\Desktop\runner_4.dll"
Imagebase:	0xd00000
File size:	126'464 bytes
MD5 hash:	51E6071F9CBA48E79F10C84515AAE618
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	1
Start time:	09:26:27
Start date:	23/04/2025
Path:	C:\Windows\System32\conhost.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:	0x7ff6e60e0000
File size:	862'208 bytes
MD5 hash:	0D698AF330FD17BEE3BF90011D49251D
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	2
Start time:	09:26:27
Start date:	23/04/2025
Path:	C:\Windows\SysWOW64\cmd.exe
Wow64 process (32bit):	true
Commandline:	cmd.exe /C rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1
Imagebase:	0x8e0000
File size:	236'544 bytes
MD5 hash:	D0FCE3AFA6AA1D58CE9FA336CC2B675B
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	3
Start time:	09:26:27
Start date:	23/04/2025
Path:	C:\Windows\SysWOW64\rundll32.exe
Wow64 process (32bit):	true
Commandline:	rundll32.exe "C:\Users\user\Desktop\runner_4.dll",#1
Imagebase:	0x3b0000
File size:	61'440 bytes
MD5 hash:	889B99C52A60DD49227C5E485A016679
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

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:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process 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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Warning!

Windows Analysis Report runner_4.dll

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Signatures

Sigma Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Compliance

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

HIPS / PFW / Operating System Protection Evasion

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 PE Info

General

Entrypoint Preview

Data Directories

Sections

Imports

Network Behavior

Statistics

CPU Usage

Memory Usage

Behavior

System Behavior

Analysis Process: loaddll32.exePID: 6312, Parent PID: 4056

General

File Activities

File Opened

File Created

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 Value Enumerated

Windows Analysis Report
runner_4.dll