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Windows Analysis Report
SharedUtils.dll

Overview

General Information

Sample name:SharedUtils.dll
Analysis ID:1561666
MD5:6a901f75cad796266dbaa6cffaaecd93
SHA1:36bd757ead502ab379dea72e956a07edb18df450
SHA256:5dadb20c11d261cefe338ff6d2d406da879334f1a85de6fa73662d84716537e7
Infos:

Detection

Score:2
Range:0 - 100
Whitelisted:false
Confidence:60%

Signatures

Binary contains a suspicious time stamp
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: 7412 cmdline: loaddll32.exe "C:\Users\user\Desktop\SharedUtils.dll" MD5: 51E6071F9CBA48E79F10C84515AAE618)
    • conhost.exe (PID: 7428 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
    • cmd.exe (PID: 7508 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\SharedUtils.dll",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B)
      • rundll32.exe (PID: 7528 cmdline: rundll32.exe "C:\Users\user\Desktop\SharedUtils.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: SharedUtils.dllStatic PE information: certificate valid
Source: SharedUtils.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: SharedUtils.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0E
Source: SharedUtils.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crt0
Source: SharedUtils.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedRootG4.crt0C
Source: SharedUtils.dllString found in binary or memory: http://crl.comodoca.com/AAACertificateServices.crl04
Source: SharedUtils.dllString found in binary or memory: http://crl.sectigo.com/SectigoPublicCodeSigningCAR36.crl0y
Source: SharedUtils.dllString found in binary or memory: http://crl.sectigo.com/SectigoPublicCodeSigningRootR46.crl0
Source: SharedUtils.dllString found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0
Source: SharedUtils.dllString found in binary or memory: http://crl3.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crl0
Source: SharedUtils.dllString found in binary or memory: http://crl3.digicert.com/DigiCertTrustedRootG4.crl0
Source: SharedUtils.dllString found in binary or memory: http://crt.sectigo.com/SectigoPublicCodeSigningCAR36.crt0#
Source: SharedUtils.dllString found in binary or memory: http://crt.sectigo.com/SectigoPublicCodeSigningRootR46.p7c0#
Source: SharedUtils.dllString found in binary or memory: http://ocsp.comodoca.com0
Source: SharedUtils.dllString found in binary or memory: http://ocsp.digicert.com0A
Source: SharedUtils.dllString found in binary or memory: http://ocsp.digicert.com0C
Source: SharedUtils.dllString found in binary or memory: http://ocsp.digicert.com0X
Source: SharedUtils.dllString found in binary or memory: http://ocsp.sectigo.com0
Source: SharedUtils.dllString found in binary or memory: https://sectigo.com/CPS0
Source: classification engineClassification label: clean2.winDLL@6/0@0/0
Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:7428:120:WilError_03
Source: SharedUtils.dllStatic PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: SharedUtils.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\SharedUtils.dll",#1
Source: unknownProcess created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\SharedUtils.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\SharedUtils.dll",#1
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\SharedUtils.dll",#1
Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\SharedUtils.dll",#1Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\SharedUtils.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: SharedUtils.dllStatic PE information: certificate valid
Source: SharedUtils.dllStatic PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: SharedUtils.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: SharedUtils.dllStatic PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: SharedUtils.dllStatic PE information: 0x842CA856 [Sun Apr 8 17:33:10 2040 UTC]
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\SharedUtils.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
Timestomp
NTDSSystem Network Configuration DiscoveryDistributed Component Object ModelInput CaptureProtocol ImpersonationTraffic DuplicationData Destruction
Gather Victim Network InformationServerCloud AccountsLaunchdNetwork Logon ScriptNetwork Logon Script1
DLL Side-Loading
LSA SecretsInternet Connection DiscoverySSHKeyloggingFallback ChannelsScheduled TransferData Encrypted for Impact
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: 1561666 Sample: SharedUtils.dll Startdate: 24/11/2024 Architecture: WINDOWS Score: 2 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
SharedUtils.dll0%ReversingLabs
SharedUtils.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#SharedUtils.dllfalse
    high
    https://sectigo.com/CPS0SharedUtils.dllfalse
      high
      http://crt.sectigo.com/SectigoPublicCodeSigningRootR46.p7c0#SharedUtils.dllfalse
        high
        http://crl.sectigo.com/SectigoPublicCodeSigningCAR36.crl0ySharedUtils.dllfalse
          high
          http://crl.sectigo.com/SectigoPublicCodeSigningRootR46.crl0SharedUtils.dllfalse
            high
            http://ocsp.sectigo.com0SharedUtils.dllfalse
              high
              No contacted IP infos
              Joe Sandbox version:41.0.0 Charoite
              Analysis ID:1561666
              Start date and time:2024-11-24 03:50:52 +01:00
              Joe Sandbox product:CloudBasic
              Overall analysis duration:0h 5m 1s
              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
              Run name:Run with higher sleep bypass
              Number of analysed new started processes analysed:11
              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:SharedUtils.dll
              Detection:CLEAN
              Classification:clean2.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
              • Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, WMIADAP.exe, SIHClient.exe, conhost.exe, backgroundTaskHost.exe, svchost.exe
              • Excluded domains from analysis (whitelisted): otelrules.azureedge.net, slscr.update.microsoft.com, ctldl.windowsupdate.com, time.windows.com, fe3cr.delivery.mp.microsoft.com
              • Not all processes where analyzed, report is missing behavior information
              No simulations
              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):6.283023167142929
              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:SharedUtils.dll
              File size:89'792 bytes
              MD5:6a901f75cad796266dbaa6cffaaecd93
              SHA1:36bd757ead502ab379dea72e956a07edb18df450
              SHA256:5dadb20c11d261cefe338ff6d2d406da879334f1a85de6fa73662d84716537e7
              SHA512:7c9444e2665cd43e22e3be82eaf2245f8ffa8ecc6a45ca7949e1692a2edf65f0b6a4437c95c62c0e0a59668a8a0f2baba5bbb920d20d13ee6d65f2becd66c2a5
              SSDEEP:1536:Tk4PrVxxZJuMWk9OOdn+bgN8rWEwbJlvJsA/lJiB0u+EsZBxTUZZXxpl:TkorV/Xl9OeJerWNbJlvO0lJiBSZBxT4
              TLSH:27936C42A3EC0D53D99F1ABCE0A213124B30DB16AD16F34F19DCB4D91E533A259267AF
              File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L...V.,..........." ..0..*...........I... ...`....... ....................................`................................
              Icon Hash:7ae282899bbab082
              Entrypoint:0x1001491e
              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:0x842CA856 [Sun Apr 8 17:33:10 2040 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
              jmp dword ptr [10002000h]
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              pop ds
              mov ecx, dword ptr [eax]
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              NameVirtual AddressVirtual Size Is in Section
              IMAGE_DIRECTORY_ENTRY_EXPORT0x00x0
              IMAGE_DIRECTORY_ENTRY_IMPORT0x148cc0x4f.text
              IMAGE_DIRECTORY_ENTRY_RESOURCE0x160000x330.rsrc
              IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
              IMAGE_DIRECTORY_ENTRY_SECURITY0x132000x2cc0
              IMAGE_DIRECTORY_ENTRY_BASERELOC0x180000xc.reloc
              IMAGE_DIRECTORY_ENTRY_DEBUG0x148b00x1c.text
              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
              .text0x20000x129480x12a00aca74c0d16e299e75c01f949ef3b8acbFalse0.4518272860738255data6.036483262989664IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
              .rsrc0x160000x3300x400a3fc65a28b673d943ffe06f4026f12d3False0.3388671875data2.612983628108536IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
              .reloc0x180000xc0x200cdb45ad42c18ae0fae21d04b1028052dFalse0.044921875data0.10191042566270775IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
              NameRVASizeTypeLanguageCountryZLIB Complexity
              RT_VERSION0x160580x2d4data0.43784530386740333
              DLLImport
              mscoree.dll_CorDllMain
              No network behavior found

              Click to jump to process

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              Target ID:1
              Start time:21:51:54
              Start date:23/11/2024
              Path:C:\Windows\System32\loaddll32.exe
              Wow64 process (32bit):true
              Commandline:loaddll32.exe "C:\Users\user\Desktop\SharedUtils.dll"
              Imagebase:0xcf0000
              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:2
              Start time:21:51:54
              Start date:23/11/2024
              Path:C:\Windows\System32\conhost.exe
              Wow64 process (32bit):false
              Commandline:C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
              Imagebase:0x7ff75da10000
              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:4
              Start time:21:51:54
              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\SharedUtils.dll",#1
              Imagebase:0x410000
              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:5
              Start time:21:51:54
              Start date:23/11/2024
              Path:C:\Windows\SysWOW64\rundll32.exe
              Wow64 process (32bit):true
              Commandline:rundll32.exe "C:\Users\user\Desktop\SharedUtils.dll",#1
              Imagebase:0x2e0000
              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