Windows Analysis Report
RPHSNqfBjbKzV.dll

Overview

General Information

Sample name: RPHSNqfBjbKzV.dll
Analysis ID: 1502266
MD5: fda1dd36c546a292960d7d1b4514e4c2
SHA1: 485cbb48e01a940387782d27a3ebcd48ce324fc5
SHA256: 8160fedad806fe4e5a2dd8053e33c39236308c4e56c6a4043346b7f7a5d88684
Tags: dll
Infos:

Detection

Score: 68
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
AI detected suspicious sample
Machine Learning detection for sample
Tries to harvest and steal browser information (history, passwords, etc)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to query locales information (e.g. system language)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Found evasive API chain (may stop execution after checking a module file name)
Found large amount of non-executed APIs
Program does not show much activity (idle)
Sample execution stops while process was sleeping (likely an evasion)
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)

Classification

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: RPHSNqfBjbKzV.dll Avira: detected
Multi AV Scanner detection for submitted file
Source: RPHSNqfBjbKzV.dll Virustotal: Detection: 41% Perma Link
AI detected suspicious sample
Source: Submited Sample Integrated Neural Analysis Model: Matched 99.9% probability
Machine Learning detection for sample
Source: RPHSNqfBjbKzV.dll Joe Sandbox ML: detected
Uses 32bit PE files
Source: RPHSNqfBjbKzV.dll Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
Detected potential crypto function
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_04B433B0 3_2_04B433B0
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_056333B0 4_2_056333B0
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 6_2_04EC33B0 6_2_04EC33B0
Uses 32bit PE files
Source: RPHSNqfBjbKzV.dll Static PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
Source: classification engine Classification label: mal68.spyw.winDLL@10/0@0/0
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:5096:120:WilError_03
Source: RPHSNqfBjbKzV.dll Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Windows\SysWOW64\rundll32.exe File read: C:\Users\user\AppData\Roaming\Mozilla\Firefox\profiles.ini Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\RPHSNqfBjbKzV.dll,#1
Source: RPHSNqfBjbKzV.dll Virustotal: Detection: 41%
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\RPHSNqfBjbKzV.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\RPHSNqfBjbKzV.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\RPHSNqfBjbKzV.dll,#1
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\RPHSNqfBjbKzV.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\RPHSNqfBjbKzV.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\RPHSNqfBjbKzV.dll",#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\RPHSNqfBjbKzV.dll,#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\RPHSNqfBjbKzV.dll",#1 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\RPHSNqfBjbKzV.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: RPHSNqfBjbKzV.dll Static file information: File size 6829568 > 1048576
Source: RPHSNqfBjbKzV.dll Static PE information: Raw size of .data is bigger than: 0x100000 < 0x5ec600
Uses code obfuscation techniques (call, push, ret)
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_04B43395 push ecx; ret 3_2_04B433A8
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_04B564F0 push eax; ret 3_2_04B5650E
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_056464F0 push eax; ret 4_2_0564650E
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_05633395 push ecx; ret 4_2_056333A8
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 6_2_04ED64F0 push eax; ret 6_2_04ED650E
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 6_2_04EC3395 push ecx; ret 6_2_04EC33A8
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Found evasive API chain (may stop execution after checking a module file name)
Source: C:\Windows\SysWOW64\rundll32.exe Evasive API call chain: GetModuleFileName,DecisionNodes,ExitProcess
Found large amount of non-executed APIs
Source: C:\Windows\SysWOW64\rundll32.exe API coverage: 3.4 %
Source: C:\Windows\SysWOW64\rundll32.exe API coverage: 3.4 %
Source: C:\Windows\SysWOW64\rundll32.exe API coverage: 2.0 %
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
Source: C:\Windows\SysWOW64\rundll32.exe API call chain: ExitProcess graph end node
Source: C:\Windows\SysWOW64\rundll32.exe API call chain: ExitProcess graph end node
Source: C:\Windows\SysWOW64\rundll32.exe API call chain: ExitProcess graph end node
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_04B4422B _memset,IsDebuggerPresent, 3_2_04B4422B
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_04B4F0EF EncodePointer,EncodePointer,___crtIsPackagedApp,LoadLibraryExW,GetLastError,LoadLibraryExW,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,GetProcAddress,EncodePointer,IsDebuggerPresent,OutputDebugStringW,DecodePointer,DecodePointer,DecodePointer,DecodePointer,DecodePointer,DecodePointer,DecodePointer, 3_2_04B4F0EF
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
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_04B411A4 SetUnhandledExceptionFilter,UnhandledExceptionFilter, 3_2_04B411A4
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_056311A4 SetUnhandledExceptionFilter,UnhandledExceptionFilter, 4_2_056311A4
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 6_2_04EC11A4 SetUnhandledExceptionFilter,UnhandledExceptionFilter, 6_2_04EC11A4
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\RPHSNqfBjbKzV.dll",#1 Jump to behavior
Contains functionality to query locales information (e.g. system language)
Source: C:\Windows\SysWOW64\rundll32.exe Code function: __IsNonwritableInCurrentImage,___crtGetLocaleInfoA,GetLastError,___crtGetLocaleInfoA,__calloc_crt,___crtGetLocaleInfoA,__calloc_crt,_free,_free,__calloc_crt,_free,__invoke_watson, 3_2_04B433B0
Source: C:\Windows\SysWOW64\rundll32.exe Code function: GetLocaleInfoW, 3_2_04B42C29
Source: C:\Windows\SysWOW64\rundll32.exe Code function: _LocaleUpdate::_LocaleUpdate,__crtGetLocaleInfoA_stat, 3_2_04B4E1C6
Source: C:\Windows\SysWOW64\rundll32.exe Code function: _LocaleUpdate::_LocaleUpdate,__crtGetLocaleInfoA_stat, 4_2_0563E1C6
Source: C:\Windows\SysWOW64\rundll32.exe Code function: GetLocaleInfoW, 4_2_05632C29
Source: C:\Windows\SysWOW64\rundll32.exe Code function: __IsNonwritableInCurrentImage,___crtGetLocaleInfoA,GetLastError,___crtGetLocaleInfoA,__calloc_crt,___crtGetLocaleInfoA,__calloc_crt,_free,_free,__calloc_crt,_free,__invoke_watson, 4_2_056333B0
Source: C:\Windows\SysWOW64\rundll32.exe Code function: _LocaleUpdate::_LocaleUpdate,__crtGetLocaleInfoA_stat, 6_2_04ECE1C6
Source: C:\Windows\SysWOW64\rundll32.exe Code function: __IsNonwritableInCurrentImage,___crtGetLocaleInfoA,GetLastError,___crtGetLocaleInfoA,__calloc_crt,___crtGetLocaleInfoA,__calloc_crt,_free,_free,__calloc_crt,_free,__invoke_watson, 6_2_04EC33B0
Source: C:\Windows\SysWOW64\rundll32.exe Code function: GetLocaleInfoW, 6_2_04EC2C29

Stealing of Sensitive Information
barindex
Tries to harvest and steal browser information (history, passwords, etc)
Source: C:\Windows\SysWOW64\rundll32.exe File opened: C:\Users\user\AppData\Roaming\Mozilla\Firefox\profiles.ini Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe File opened: C:\Users\user\AppData\Local\Google\Chrome\User Data\Default\Local Storage\leveldb\MANIFEST-000001 Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe File opened: C:\Users\user\AppData\Roaming\Mozilla\Firefox\Profiles\2o7hffxt.default-release\webappsstore.sqlite Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe File opened: C:\Users\user\AppData\Local\Google\Chrome\User Data\Default\Local Storage\leveldb\CURRENT Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe File opened: C:\Users\user\AppData\Local\Google\Chrome\User Data\Default\Local Storage\leveldb\000003.log Jump to behavior
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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: 1502266 Sample: RPHSNqfBjbKzV.dll Startdate: 31/08/2024 Architecture: WINDOWS Score: 68 20 Antivirus / Scanner detection for submitted sample 2->20 22 Multi AV Scanner detection for submitted file 2->22 24 Machine Learning detection for sample 2->24 26 AI detected suspicious sample 2->26 7 loaddll32.exe 1 2->7         started        process3 process4 9 rundll32.exe 7->9         started        12 cmd.exe 1 7->12         started        14 rundll32.exe 7->14         started        16 conhost.exe 7->16         started        signatures5 28 Tries to harvest and steal browser information (history, passwords, etc) 9->28 18 rundll32.exe 12->18         started        process6
⊘No contacted IP infos