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Windows Analysis Report
FastMath.dll.dll

Overview

General Information

Sample name:	FastMath.dll.dll (renamed file extension from exe to dll)
Original sample name:	FastMath.dll.exe
Analysis ID:	1546674
MD5:	2acea922e251c62106719021bebd1815
SHA1:	6cb02b2483212fc068b57271fcf7e302b2b8d135
SHA256:	8c6c3f9b3fd8497322cd9e798790aa3485a44f9c5418bb4aa97b630a3fb8cead
Tags:	exeuser-likeastar20
Infos:

Detection

Score:	22
Range:	0 - 100
Whitelisted:	false
Confidence:	80%

Signatures

AI detected suspicious sample

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

May sleep (evasive loops) to hinder dynamic analysis

Program does not show much activity (idle)

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

Classification

Process Tree

System is w10x64

loaddll64.exe (PID: 3556 cmdline: loaddll64.exe "C:\Users\user\Desktop\FastMath.dll.dll" MD5: 763455F9DCB24DFEECC2B9D9F8D46D52)

conhost.exe (PID: 1776 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)

cmd.exe (PID: 2076 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1 MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE)

rundll32.exe (PID: 2956 cmdline: rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1 MD5: EF3179D498793BF4234F708D3BE28633)

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

AI detected suspicious sample

Source: Submited Sample

Integrated Neural Analysis Model: Matched 99.6% probability

Source: FastMath.dll.dll

Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT

Source: classification engine

Classification label: sus22.winDLL@6/0@0/0

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

Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:1776:120:WilError_03

Source: FastMath.dll.dll

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

Source: C:\Windows\System32\loaddll64.exe

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

Jump to behavior

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

Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1

Source: unknown	Process created: C:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\FastMath.dll.dll"
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1
Source: C:\Windows\System32\cmd.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1	Jump to behavior
Source: C:\Windows\System32\cmd.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1	Jump to behavior

Source: C:\Windows\System32\loaddll64.exe	Section loaded: apphelp.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: msvcp140.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: vcruntime140_1.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: vcruntime140.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: vcruntime140.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: vcruntime140_1.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: vcruntime140.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: windows.storage.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: wldp.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: kernel.appcore.dll	Jump to behavior

Source: FastMath.dll.dll

Static PE information: Image base 0x180000000 > 0x60000000

Source: FastMath.dll.dll	Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IMPORT
Source: FastMath.dll.dll	Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_RESOURCE
Source: FastMath.dll.dll	Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_BASERELOC
Source: FastMath.dll.dll	Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: FastMath.dll.dll	Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG
Source: FastMath.dll.dll	Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IAT

Source: FastMath.dll.dll

Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT

Source: FastMath.dll.dll

Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG

Source: FastMath.dll.dll	Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_IMPORT is in: .rdata
Source: FastMath.dll.dll	Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_RESOURCE is in: .rsrc
Source: FastMath.dll.dll	Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_BASERELOC is in: .reloc
Source: FastMath.dll.dll	Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG is in: .rdata
Source: FastMath.dll.dll	Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_IAT is in: .rdata

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

Process information set: NOOPENFILEERRORBOX

Jump to behavior

Source: C:\Windows\System32\loaddll64.exe TID: 6024

Thread sleep time: -120000s >= -30000s

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\loaddll64.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\System32\cmd.exe

Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\FastMath.dll.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	11 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	11 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

Screenshots

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
FastMath.dll.dll	5%	ReversingLabs

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:	41.0.0 Charoite
Analysis ID:	1546674
Start date and time:	2024-11-01 12:41:05 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 1m 41s
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 AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	FastMath.dll.dll (renamed file extension from exe to dll)
Original Sample Name:	FastMath.dll.exe
Detection:	SUS
Classification:	sus22.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:	Stop behavior analysis, all processes terminated

Warnings

Exclude process from analysis (whitelisted): dllhost.exe
Not all processes where analyzed, report is missing behavior information
VT rate limit hit for: FastMath.dll.dll

Simulations

Behavior and APIs

Time	Type	Description
07:41:53	API Interceptor	1x Sleep call for process: loaddll64.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:	PE32+ executable (DLL) (GUI) x86-64, for MS Windows
Entropy (8bit):	5.152046664541587
TrID:	Win64 Dynamic Link Library (generic) (102004/3) 86.43% Win64 Executable (generic) (12005/4) 10.17% Generic Win/DOS Executable (2004/3) 1.70% DOS Executable Generic (2002/1) 1.70% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.01%
File name:	FastMath.dll.dll
File size:	825'344 bytes
MD5:	2acea922e251c62106719021bebd1815
SHA1:	6cb02b2483212fc068b57271fcf7e302b2b8d135
SHA256:	8c6c3f9b3fd8497322cd9e798790aa3485a44f9c5418bb4aa97b630a3fb8cead
SHA512:	2e3dd20190cd4caee4692c31860192af2e4e47ea8b3b495d506e37ef61c39ae9d2ac1d6640b20ccf0d8815dbb86cbf4e3407aeace546c7427e19bbf323fd87e8
SSDEEP:	24576:pFdF7JvWnT4EZobVCbnA5vz7/gbHcJ2y5TnfFcKQSkhjI+b:FWbHKNcXSk
TLSH:	690537CD862F40A6D402F436CB67BF8304617F271AC1E576419626257CABBA4CF1B63B
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......[..G..p...p...p.......p..rs...p..rt...p..ru...p..rq...p.opq...p...q.%.p..uy...p..u....p..ur...p.Rich..p........................

File Icon


Icon Hash:	7ae282899bbab082

Static PE Info

General

Entrypoint:	0x1800c7240
Entrypoint Section:	.text
Digitally signed:	false
Imagebase:	0x180000000
Subsystem:	windows gui
Image File Characteristics:	EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, DLL
DLL Characteristics:	HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
Time Stamp:	0x670EDFD8 [Tue Oct 15 21:34:16 2024 UTC]
TLS Callbacks:
CLR (.Net) Version:
OS Version Major:	6
OS Version Minor:	0
File Version Major:	6
File Version Minor:	0
Subsystem Version Major:	6
Subsystem Version Minor:	0
Import Hash:	713be3dcc0308103e37651bf3b2438d6

Entrypoint Preview

Instruction
dec eax
mov dword ptr [esp+08h], ebx
dec eax
mov dword ptr [esp+10h], esi
push edi
dec eax
sub esp, 20h
dec ecx
mov edi, eax
mov ebx, edx
dec eax
mov esi, ecx
cmp edx, 01h
jne 00007F0D54BEA6D7h
call 00007F0D54BEACECh
dec esp
mov eax, edi
mov edx, ebx
dec eax
mov ecx, esi
dec eax
mov ebx, dword ptr [esp+30h]
dec eax
mov esi, dword ptr [esp+38h]
dec eax
add esp, 20h
pop edi
jmp 00007F0D54BEA570h
int3
int3
int3
inc eax
push ebx
dec eax
sub esp, 20h
dec eax
mov ebx, ecx
xor ecx, ecx
call dword ptr [00000DD7h]
dec eax
mov ecx, ebx
call dword ptr [00000DC6h]
call dword ptr [00000DD0h]
dec eax
mov ecx, eax
mov edx, C0000409h
dec eax
add esp, 20h
pop ebx
dec eax
jmp dword ptr [00000DC4h]
dec eax
mov dword ptr [esp+08h], ecx
dec eax
sub esp, 38h
mov ecx, 00000017h
call dword ptr [00000DB8h]
test eax, eax
je 00007F0D54BEA6D9h
mov ecx, 00000002h
int 29h
dec eax
lea ecx, dword ptr [00002F76h]
call 00007F0D54BEA77Eh
dec eax
mov eax, dword ptr [esp+38h]
dec eax
mov dword ptr [0000305Dh], eax
dec eax
lea eax, dword ptr [esp+38h]
dec eax
add eax, 08h
dec eax
mov dword ptr [00002FEDh], eax
dec eax
mov eax, dword ptr [00003046h]
dec eax
mov dword ptr [00002EB7h], eax

Rich Headers

Programming Language:

[IMP] VS2008 SP1 build 30729

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0xc90ec	0xa0	.rdata
IMAGE_DIRECTORY_ENTRY_RESOURCE	0xcc000	0x1e0	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0xcb000	0x45c	.pdata
IMAGE_DIRECTORY_ENTRY_SECURITY	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BASERELOC	0xcd000	0x54	.reloc
IMAGE_DIRECTORY_ENTRY_DEBUG	0xc84b0	0x38	.rdata
IMAGE_DIRECTORY_ENTRY_COPYRIGHT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_GLOBALPTR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_TLS	0x0	0x0
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG	0xc8370	0x140	.rdata
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IAT	0xc8000	0x1c8	.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	0xc6f02	0xc7000	73adece5c7bdd02303e0b857c63d1824	False	0.3477826142430904	data	5.143066738052095	IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
.rdata	0xc8000	0x17c8	0x1800	b1bb2b07fa37ab31eda9d696c8f32b51	False	0.4283854166666667	data	4.631202557281053	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.data	0xca000	0x770	0x200	a1ec131ed2174a6680211d2373269dde	False	0.236328125	DOS executable (block device driver)	2.14215475008455	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.pdata	0xcb000	0x45c	0x600	3ce42ec04b0642197a582601b31f10eb	False	0.3717447916666667	data	3.784056620598658	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.rsrc	0xcc000	0x1e0	0x200	ed81d35658cb9dfd9166331751d5b78c	False	0.53125	data	4.724728911998389	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.reloc	0xcd000	0x54	0x200	118cd00a196002de98a8e1a22f4d086d	False	0.19140625	data	1.1826458577247836	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country	ZLIB Complexity
RT_MANIFEST	0xcc060	0x17d	XML 1.0 document, ASCII text, with CRLF line terminators	English	United States	0.5931758530183727

Imports

DLL	Import
KERNEL32.dll	MoveFileA, FindFirstFileA, WriteFile, FindNextFileA, FindClose, CreateFileA, DeleteFileA, CloseHandle, GetCurrentProcessId, FlushFileBuffers, RtlLookupFunctionEntry, RtlVirtualUnwind, UnhandledExceptionFilter, SetUnhandledExceptionFilter, GetCurrentProcess, TerminateProcess, IsProcessorFeaturePresent, IsDebuggerPresent, QueryPerformanceCounter, GetCurrentThreadId, RtlCaptureContext, GetSystemTimeAsFileTime, InitializeSListHead
SHELL32.dll	SHGetFolderPathA
MSVCP140.dll	?_Xlength_error@std@@YAXPEBD@Z
VCRUNTIME140_1.dll	__CxxFrameHandler4
VCRUNTIME140.dll	__C_specific_handler, memmove, __std_exception_copy, __std_exception_destroy, memcpy, memset, memchr, memcmp, _CxxThrowException, __std_type_info_destroy_list
api-ms-win-crt-runtime-l1-1-0.dll	_crt_atexit, _initterm, _configure_narrow_argv, _initialize_onexit_table, _initialize_narrow_environment, _seh_filter_dll, _initterm_e, _cexit, _invalid_parameter_noinfo_noreturn, _execute_onexit_table, _register_onexit_function
api-ms-win-crt-heap-l1-1-0.dll	free, malloc, _callnewh

Possible Origin

Language of compilation system	Country where language is spoken	Map
English	United States

Network Behavior

⊘No network behavior found

Statistics

CPU Usage

Click to jump to process

Memory Usage

Click to jump to process

Behavior

Click to jump to process

System Behavior

Analysis Process: loaddll64.exePID: 3556, Parent PID: 1028

General

Target ID:	0
Start time:	07:41:52
Start date:	01/11/2024
Path:	C:\Windows\System32\loaddll64.exe
Wow64 process (32bit):	false
Commandline:	loaddll64.exe "C:\Users\user\Desktop\FastMath.dll.dll"
Imagebase:	0x7ff74b6c0000
File size:	165'888 bytes
MD5 hash:	763455F9DCB24DFEECC2B9D9F8D46D52
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Chronological Activities

Analysis Process: conhost.exePID: 1776, Parent PID: 3556

General

Target ID:	1
Start time:	07:41:53
Start date:	01/11/2024
Path:	C:\Windows\System32\conhost.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:	0x7ff6d64d0000
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

Chronological Activities

Analysis Process: cmd.exePID: 2076, Parent PID: 3556

General

Target ID:	2
Start time:	07:41:53
Start date:	01/11/2024
Path:	C:\Windows\System32\cmd.exe
Wow64 process (32bit):	false
Commandline:	cmd.exe /C rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1
Imagebase:	0x7ff6f7b90000
File size:	289'792 bytes
MD5 hash:	8A2122E8162DBEF04694B9C3E0B6CDEE
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Chronological Activities

Analysis Process: rundll32.exePID: 2956, Parent PID: 2076

General

Target ID:	3
Start time:	07:41:53
Start date:	01/11/2024
Path:	C:\Windows\System32\rundll32.exe
Wow64 process (32bit):	false
Commandline:	rundll32.exe "C:\Users\user\Desktop\FastMath.dll.dll",#1
Imagebase:	0x7ff6b20b0000
File size:	71'680 bytes
MD5 hash:	EF3179D498793BF4234F708D3BE28633
Has elevated privileges:	true
Has administrator privileges:	true
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:	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

Loading Joe Sandbox Report ...

Warning!

Windows Analysis Report FastMath.dll.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

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Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

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Contacted Domains

World Map of Contacted IPs

General Information

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Behavior and APIs

Joe Sandbox View / Context

IPs

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Dropped Files

Created / dropped Files

Static File Info

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File Icon

Static PE Info

General

Entrypoint Preview

Rich Headers

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Imports

Possible Origin

Network Behavior

Statistics

CPU Usage

Memory Usage

Behavior

System Behavior

Analysis Process: loaddll64.exePID: 3556, Parent PID: 1028

General

Chronological Activities

Analysis Process: conhost.exePID: 1776, Parent PID: 3556

General

Chronological Activities

Analysis Process: cmd.exePID: 2076, Parent PID: 3556

General

Chronological Activities

Analysis Process: rundll32.exePID: 2956, Parent PID: 2076

General

Chronological Activities

Windows Analysis Report
FastMath.dll.dll