Windows Analysis Report
Newtonsoft.Json.ni.dll

Overview

General Information

Sample name: Newtonsoft.Json.ni.dll
Analysis ID: 1530955
MD5: 30dcbcddadbf98d01ad648266a27c97c
SHA1: 0af96ae6ea1d9db182bbbd77a337c4dc813799d6
SHA256: 6890e6a2a7409fddba1653c41c265e76bd6a8192d56cfe908b76e655d43689ec
Infos:

Detection

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

Signatures

.NET source code contains potential unpacker
AI detected suspicious sample
Binary contains a suspicious time stamp
Creates a process in suspended mode (likely to inject code)
PE file does not import any functions
Program does not show much activity (idle)
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses 32bit PE files

Classification

AV Detection
barindex
AI detected suspicious sample
Source: Submited Sample Integrated Neural Analysis Model: Matched 99.3% probability
Uses 32bit PE files
Source: Newtonsoft.Json.ni.dll Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
Source: Newtonsoft.Json.ni.dll Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Binary string: Newtonsoft.Json.ni.pdb source: Newtonsoft.Json.ni.dll
Source: Binary string: /_/Src/Newtonsoft.Json/obj/Release/net45/Newtonsoft.Json.pdbSHA256 source: Newtonsoft.Json.ni.dll
Source: Binary string: /_/Src/Newtonsoft.Json/obj/Release/net45/Newtonsoft.Json.pdb source: Newtonsoft.Json.ni.dll
Source: Binary string: Newtonsoft.Json.ni.pdbRSDS source: Newtonsoft.Json.ni.dll
Source: Newtonsoft.Json.ni.dll String found in binary or memory: http://james.newtonking.com/projects/json
Source: Newtonsoft.Json.ni.dll String found in binary or memory: https://github.com/JamesNK/Newtonsoft.Json
Source: Newtonsoft.Json.ni.dll String found in binary or memory: https://www.newtonsoft.com/jsonschema
Source: Newtonsoft.Json.ni.dll String found in binary or memory: https://www.nuget.org/packages/Newtonsoft.Json.Bson
PE file does not import any functions
Source: Newtonsoft.Json.ni.dll Static PE information: No import functions for PE file found
Sample file is different than original file name gathered from version info
Source: Newtonsoft.Json.ni.dll Binary or memory string: OriginalFilenameNewtonsoft.Json.dll2 vs Newtonsoft.Json.ni.dll
Uses 32bit PE files
Source: Newtonsoft.Json.ni.dll Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
Source: classification engine Classification label: mal48.evad.winDLL@6/0@0/0
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:7324:120:WilError_03
Source: Newtonsoft.Json.ni.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\Newtonsoft.Json.ni.dll",#1
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\Newtonsoft.Json.ni.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\Newtonsoft.Json.ni.dll",#1
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\Newtonsoft.Json.ni.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\Newtonsoft.Json.ni.dll",#1 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\Newtonsoft.Json.ni.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: Newtonsoft.Json.ni.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: Newtonsoft.Json.ni.dll Static PE information: Virtual size of .text is bigger than: 0x100000
Source: Newtonsoft.Json.ni.dll Static file information: File size 3109376 > 1048576
Source: Newtonsoft.Json.ni.dll Static PE information: Raw size of .text is bigger than: 0x100000 < 0x248200
Source: Newtonsoft.Json.ni.dll Static PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Newtonsoft.Json.ni.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: Newtonsoft.Json.ni.pdb source: Newtonsoft.Json.ni.dll
Source: Binary string: /_/Src/Newtonsoft.Json/obj/Release/net45/Newtonsoft.Json.pdbSHA256 source: Newtonsoft.Json.ni.dll
Source: Binary string: /_/Src/Newtonsoft.Json/obj/Release/net45/Newtonsoft.Json.pdb source: Newtonsoft.Json.ni.dll
Source: Binary string: Newtonsoft.Json.ni.pdbRSDS source: Newtonsoft.Json.ni.dll

Data Obfuscation
barindex
.NET source code contains potential unpacker
Source: Newtonsoft.Json.ni.dll, DynamicUtils.cs .Net Code: CreateSharpArgumentInfoArray
Source: Newtonsoft.Json.ni.dll, LateBoundReflectionDelegateFactory.cs .Net Code: CreateDefaultConstructor
Binary contains a suspicious time stamp
Source: Newtonsoft.Json.ni.dll Static PE information: 0xB73F2470 [Fri Jun 3 23:17:04 2067 UTC]
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: C:\Windows\System32\loaddll32.exe Thread delayed: delay time: 120000 Jump to behavior
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\Newtonsoft.Json.ni.dll",#1 Jump to behavior
windows-stand
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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1530955 Sample: Newtonsoft.Json.ni.dll Startdate: 10/10/2024 Architecture: WINDOWS Score: 48 15 .NET source code contains potential unpacker 2->15 17 AI detected suspicious sample 2->17 7 loaddll32.exe 1 2->7         started        process3 process4 9 cmd.exe 1 7->9         started        11 conhost.exe 7->11         started        process5 13 rundll32.exe 9->13         started       
⊘No contacted IP infos