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Windows Analysis Report
NetworkWrapper.dll

Overview

General Information

Sample name:NetworkWrapper.dll
Analysis ID:1561664
MD5:4cca0700edde71ad394dd9f2682f7908
SHA1:a8e2faedf283b9cbbe7e44643eccabab2f30390e
SHA256:d698030455fe579185e51b010752c31f6845511b51b65bec45fbb0d6bfc88170
Infos:

Detection

Score:1
Range:0 - 100
Whitelisted:false
Confidence:60%

Signatures

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)

Classification

  • System is w10x64
  • loaddll32.exe (PID: 2508 cmdline: loaddll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll" MD5: 51E6071F9CBA48E79F10C84515AAE618)
    • conhost.exe (PID: 412 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
    • cmd.exe (PID: 2836 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B)
      • rundll32.exe (PID: 3840 cmdline: rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1 MD5: 889B99C52A60DD49227C5E485A016679)
  • cleanup
No configs have been found
No yara matches
No Sigma rule has matched
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

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

Source: NetworkWrapper.dllStatic PE information: certificate valid
Source: NetworkWrapper.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: NetworkWrapper.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0E
Source: NetworkWrapper.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crt0
Source: NetworkWrapper.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedRootG4.crt0C
Source: NetworkWrapper.dllString found in binary or memory: http://crl.comodoca.com/AAACertificateServices.crl04
Source: NetworkWrapper.dllString found in binary or memory: http://crl.sectigo.com/SectigoPublicCodeSigningCAR36.crl0y
Source: NetworkWrapper.dllString found in binary or memory: http://crl.sectigo.com/SectigoPublicCodeSigningRootR46.crl0
Source: NetworkWrapper.dllString found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0
Source: NetworkWrapper.dllString found in binary or memory: http://crl3.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crl0
Source: NetworkWrapper.dllString found in binary or memory: http://crl3.digicert.com/DigiCertTrustedRootG4.crl0
Source: NetworkWrapper.dllString found in binary or memory: http://crt.sectigo.com/SectigoPublicCodeSigningCAR36.crt0#
Source: NetworkWrapper.dllString found in binary or memory: http://crt.sectigo.com/SectigoPublicCodeSigningRootR46.p7c0#
Source: NetworkWrapper.dllString found in binary or memory: http://ocsp.comodoca.com0
Source: NetworkWrapper.dllString found in binary or memory: http://ocsp.digicert.com0A
Source: NetworkWrapper.dllString found in binary or memory: http://ocsp.digicert.com0C
Source: NetworkWrapper.dllString found in binary or memory: http://ocsp.digicert.com0X
Source: NetworkWrapper.dllString found in binary or memory: http://ocsp.sectigo.com0
Source: NetworkWrapper.dllString found in binary or memory: https://sectigo.com/CPS0
Source: NetworkWrapper.dllBinary string: \Device\NPF_
Source: classification engineClassification label: clean1.winDLL@6/0@0/0
Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:412:120:WilError_03
Source: NetworkWrapper.dllStatic PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: NetworkWrapper.dllStatic file information: TRID: Win32 Dynamic Link Library (generic) Net Framework (1011504/3) 50.14%
Source: C:\Windows\System32\loaddll32.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1
Source: unknownProcess created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll"
Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1
Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1Jump to behavior
Source: C:\Windows\System32\loaddll32.exeSection loaded: apphelp.dllJump to behavior
Source: C:\Windows\System32\loaddll32.exeSection loaded: kernel.appcore.dllJump to behavior
Source: C:\Windows\SysWOW64\cmd.exeSection loaded: apphelp.dllJump to behavior
Source: NetworkWrapper.dllStatic PE information: certificate valid
Source: NetworkWrapper.dllStatic PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: NetworkWrapper.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: C:\Windows\SysWOW64\rundll32.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: C:\Windows\System32\conhost.exeLast function: Thread delayed
Source: C:\Windows\System32\loaddll32.exeThread delayed: delay time: 120000Jump to behavior
Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1Jump to behavior
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management Instrumentation1
DLL Side-Loading
11
Process Injection
1
Rundll32
OS Credential Dumping1
Virtualization/Sandbox Evasion
Remote ServicesData from Local SystemData ObfuscationExfiltration Over Other Network MediumAbuse Accessibility Features
CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization Scripts1
DLL Side-Loading
1
Virtualization/Sandbox Evasion
LSASS Memory1
System Information Discovery
Remote Desktop ProtocolData from Removable MediaJunk DataExfiltration Over BluetoothNetwork Denial of Service
Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)11
Process Injection
Security Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared DriveSteganographyAutomated ExfiltrationData Encrypted for Impact
Employee NamesVirtual Private ServerLocal AccountsCronLogin HookLogin Hook1
DLL Side-Loading
NTDSSystem Network Configuration DiscoveryDistributed Component Object ModelInput CaptureProtocol ImpersonationTraffic DuplicationData Destruction
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 process2 2 Behavior Graph ID: 1561664 Sample: NetworkWrapper.dll Startdate: 24/11/2024 Architecture: WINDOWS Score: 1 6 loaddll32.exe 1 2->6         started        process3 8 cmd.exe 1 6->8         started        10 conhost.exe 6->10         started        process4 12 rundll32.exe 8->12         started       

This section contains all screenshots as thumbnails, including those not shown in the slideshow.


windows-stand
SourceDetectionScannerLabelLink
NetworkWrapper.dll0%ReversingLabs
NetworkWrapper.dll0%VirustotalBrowse
No Antivirus matches
No Antivirus matches
No Antivirus matches
No Antivirus matches
No contacted domains info
NameSourceMaliciousAntivirus DetectionReputation
http://crt.sectigo.com/SectigoPublicCodeSigningCAR36.crt0#NetworkWrapper.dllfalse
    high
    https://sectigo.com/CPS0NetworkWrapper.dllfalse
      high
      http://crt.sectigo.com/SectigoPublicCodeSigningRootR46.p7c0#NetworkWrapper.dllfalse
        high
        http://crl.sectigo.com/SectigoPublicCodeSigningCAR36.crl0yNetworkWrapper.dllfalse
          high
          http://crl.sectigo.com/SectigoPublicCodeSigningRootR46.crl0NetworkWrapper.dllfalse
            high
            http://ocsp.sectigo.com0NetworkWrapper.dllfalse
              high
              No contacted IP infos
              Joe Sandbox version:41.0.0 Charoite
              Analysis ID:1561664
              Start date and time:2024-11-24 03:48:11 +01:00
              Joe Sandbox product:CloudBasic
              Overall analysis duration:0h 2m 5s
              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:NetworkWrapper.dll
              Detection:CLEAN
              Classification:clean1.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
              • Stop behavior analysis, all processes terminated
              • Exclude process from analysis (whitelisted): dllhost.exe
              • Excluded domains from analysis (whitelisted): client.wns.windows.com, ocsp.digicert.com, login.live.com, otelrules.azureedge.net, ctldl.windowsupdate.com
              • Not all processes where analyzed, report is missing behavior information
              TimeTypeDescription
              21:49:18API Interceptor1x Sleep call for process: loaddll32.exe modified
              No context
              No context
              No context
              No context
              No context
              No created / dropped files found
              File type:PE32 executable (DLL) (console) Intel 80386 Mono/.Net assembly, for MS Windows
              Entropy (8bit):6.4648904924852495
              TrID:
              • Win32 Dynamic Link Library (generic) Net Framework (1011504/3) 50.14%
              • Win32 Dynamic Link Library (generic) (1002004/3) 49.67%
              • Generic Win/DOS Executable (2004/3) 0.10%
              • DOS Executable Generic (2002/1) 0.10%
              • Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
              File name:NetworkWrapper.dll
              File size:39'104 bytes
              MD5:4cca0700edde71ad394dd9f2682f7908
              SHA1:a8e2faedf283b9cbbe7e44643eccabab2f30390e
              SHA256:d698030455fe579185e51b010752c31f6845511b51b65bec45fbb0d6bfc88170
              SHA512:779d1d1120803ac674d0ce5be87372128b13ea6f2a823a7e212d6b3c023871c1b029a2eca04546ac1663c74bf65b561249e7c984b71edfeb3bfdc25d0ede48ad
              SSDEEP:768:Fg/9Rrmh6hh5VFUS08NX80oqRCTU4ZAMxkEj:Fg8w58SHomCTUoxv
              TLSH:45034C07977C5C2ADADA0A78E0D65B154774E3022EC2DB421EF5A0964E237F157306EF
              File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L....>Of.........." ..0..d..........~.... ........... ...............................{....`................................
              Icon Hash:7ae282899bbab082
              Entrypoint:0x1000827e
              Entrypoint Section:.text
              Digitally signed:true
              Imagebase:0x10000000
              Subsystem:windows cui
              Image File Characteristics:EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, DLL
              DLL Characteristics:HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
              Time Stamp:0x664F3E14 [Thu May 23 13:01:08 2024 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:dae02f32a21e03ce65412f6e56942daa
              Signature Valid:true
              Signature Issuer:CN=Sectigo Public Code Signing CA R36, O=Sectigo Limited, C=GB
              Signature Validation Error:The operation completed successfully
              Error Number:0
              Not Before, Not After
              • 03/05/2023 20:00:00 03/08/2026 19:59:59
              Subject Chain
              • CN=Netresec AB, O=Netresec AB, S=Uppsala l\xe4n, C=SE
              Version:3
              Thumbprint MD5:4BA2EA4B6C3B04BA99C45BE50B3B692D
              Thumbprint SHA-1:0A0B6FD5C2559380B67994A10780D4165848E896
              Thumbprint SHA-256:380F6A3A06B2EF2A5FA572730E5C09E3C80190EC2C5F1F76022102A8E3A129B5
              Serial:00B52F359BF7951F9A816711D3FEDB7469
              Instruction
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              NameVirtual AddressVirtual Size Is in Section
              IMAGE_DIRECTORY_ENTRY_EXPORT0x00x0
              IMAGE_DIRECTORY_ENTRY_IMPORT0x822c0x4f.text
              IMAGE_DIRECTORY_ENTRY_RESOURCE0xa0000x3b0.rsrc
              IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
              IMAGE_DIRECTORY_ENTRY_SECURITY0x6c000x2cc0
              IMAGE_DIRECTORY_ENTRY_BASERELOC0xc0000xc.reloc
              IMAGE_DIRECTORY_ENTRY_DEBUG0x00x0
              IMAGE_DIRECTORY_ENTRY_COPYRIGHT0x00x0
              IMAGE_DIRECTORY_ENTRY_GLOBALPTR0x00x0
              IMAGE_DIRECTORY_ENTRY_TLS0x00x0
              IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG0x00x0
              IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT0x00x0
              IMAGE_DIRECTORY_ENTRY_IAT0x20000x8.text
              IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT0x00x0
              IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR0x20080x48.text
              IMAGE_DIRECTORY_ENTRY_RESERVED0x00x0
              NameVirtual AddressVirtual SizeRaw SizeMD5Xored PEZLIB ComplexityFile TypeEntropyCharacteristics
              .text0x20000x62840x6400c8a3e206100bb68495e870512ad7ef79False0.485703125data5.8455346312231775IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
              .rsrc0xa0000x3b00x400d41ce00a8af5ef53ff25823d5110dadbFalse0.396484375data2.9881895295774528IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
              .reloc0xc0000xc0x2007d29409361d8b73c9bfd83ff8cc0055dFalse0.044921875data0.07763316234324169IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
              NameRVASizeTypeLanguageCountryZLIB Complexity
              RT_VERSION0xa0580x354data0.43779342723004694
              DLLImport
              mscoree.dll_CorDllMain
              No network behavior found

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              Target ID:0
              Start time:21:49:18
              Start date:23/11/2024
              Path:C:\Windows\System32\loaddll32.exe
              Wow64 process (32bit):true
              Commandline:loaddll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll"
              Imagebase:0xb70000
              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

              Target ID:1
              Start time:21:49:18
              Start date:23/11/2024
              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

              Target ID:2
              Start time:21:49:18
              Start date:23/11/2024
              Path:C:\Windows\SysWOW64\cmd.exe
              Wow64 process (32bit):true
              Commandline:cmd.exe /C rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1
              Imagebase:0x790000
              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

              Target ID:3
              Start time:21:49:18
              Start date:23/11/2024
              Path:C:\Windows\SysWOW64\rundll32.exe
              Wow64 process (32bit):true
              Commandline:rundll32.exe "C:\Users\user\Desktop\NetworkWrapper.dll",#1
              Imagebase:0x380000
              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

              No disassembly