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Windows Analysis Report
PacketParser.dll

Overview

General Information

Sample name:PacketParser.dll
Analysis ID:1561665
MD5:d1c1b8f61400f4af04d3d20d4c6a7107
SHA1:96e33fc52b2e383edb76d67fa31c8e9f477a8844
SHA256:fa88819f196af4cfd82fdef5c6b9681e6f900f1e7bd9c1b137596c8339955226
Infos:

Detection

Score:22
Range:0 - 100
Whitelisted:false
Confidence:60%

Signatures

Contains VNC / remote desktop functionality (version string found)
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: 1832 cmdline: loaddll32.exe "C:\Users\user\Desktop\PacketParser.dll" MD5: 51E6071F9CBA48E79F10C84515AAE618)
    • conhost.exe (PID: 1428 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
    • cmd.exe (PID: 6864 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\PacketParser.dll",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B)
      • rundll32.exe (PID: 6264 cmdline: rundll32.exe "C:\Users\user\Desktop\PacketParser.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
Source: PacketParser.dllStatic PE information: certificate valid
Source: PacketParser.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: PacketParser.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0E
Source: PacketParser.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crt0
Source: PacketParser.dllString found in binary or memory: http://cacerts.digicert.com/DigiCertTrustedRootG4.crt0C
Source: PacketParser.dllString found in binary or memory: http://crl.comodoca.com/AAACertificateServices.crl04
Source: PacketParser.dllString found in binary or memory: http://crl.sectigo.com/SectigoPublicCodeSigningCAR36.crl0y
Source: PacketParser.dllString found in binary or memory: http://crl.sectigo.com/SectigoPublicCodeSigningRootR46.crl0
Source: PacketParser.dllString found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0
Source: PacketParser.dllString found in binary or memory: http://crl3.digicert.com/DigiCertTrustedG4RSA4096SHA256TimeStampingCA.crl0
Source: PacketParser.dllString found in binary or memory: http://crl3.digicert.com/DigiCertTrustedRootG4.crl0
Source: PacketParser.dllString found in binary or memory: http://crt.sectigo.com/SectigoPublicCodeSigningCAR36.crt0#
Source: PacketParser.dllString found in binary or memory: http://crt.sectigo.com/SectigoPublicCodeSigningRootR46.p7c0#
Source: PacketParser.dllString found in binary or memory: http://ocsp.comodoca.com0
Source: PacketParser.dllString found in binary or memory: http://ocsp.digicert.com0A
Source: PacketParser.dllString found in binary or memory: http://ocsp.digicert.com0C
Source: PacketParser.dllString found in binary or memory: http://ocsp.digicert.com0X
Source: PacketParser.dllString found in binary or memory: http://ocsp.sectigo.com0
Source: PacketParser.dllString found in binary or memory: https://sectigo.com/CPS0
Source: classification engineClassification label: sus22.troj.winDLL@6/0@0/0
Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:1428:120:WilError_03
Source: PacketParser.dllStatic PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: PacketParser.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\PacketParser.dll",#1
Source: unknownProcess created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\PacketParser.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\PacketParser.dll",#1
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\PacketParser.dll",#1
Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\PacketParser.dll",#1Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\PacketParser.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: PacketParser.dllStatic PE information: certificate valid
Source: PacketParser.dllStatic PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: PacketParser.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: PacketParser.dllStatic PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: PacketParser.dllStatic PE information: 0x9ED26C57 [Tue Jun 9 04:00:23 2054 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\PacketParser.dll",#1Jump to behavior

Remote Access Functionality

barindex
Source: PacketParser.dllString found in binary or memory: RFB 00
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
1
Remote Desktop Protocol
Data from Local System1
Remote Access Software
Exfiltration 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 signatures2 2 Behavior Graph ID: 1561665 Sample: PacketParser.dll Startdate: 24/11/2024 Architecture: WINDOWS Score: 22 15 Contains VNC / remote desktop functionality (version string found) 2->15 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       

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


windows-stand
SourceDetectionScannerLabelLink
PacketParser.dll0%ReversingLabs
PacketParser.dll0%VirustotalBrowse
No Antivirus matches
No Antivirus matches
No Antivirus matches
No Antivirus matches
NameIPActiveMaliciousAntivirus DetectionReputation
s-part-0035.t-0009.t-msedge.net
13.107.246.63
truefalse
    high
    NameSourceMaliciousAntivirus DetectionReputation
    http://crt.sectigo.com/SectigoPublicCodeSigningCAR36.crt0#PacketParser.dllfalse
      high
      https://sectigo.com/CPS0PacketParser.dllfalse
        high
        http://crt.sectigo.com/SectigoPublicCodeSigningRootR46.p7c0#PacketParser.dllfalse
          high
          http://crl.sectigo.com/SectigoPublicCodeSigningCAR36.crl0yPacketParser.dllfalse
            high
            http://crl.sectigo.com/SectigoPublicCodeSigningRootR46.crl0PacketParser.dllfalse
              high
              http://ocsp.sectigo.com0PacketParser.dllfalse
                high
                No contacted IP infos
                Joe Sandbox version:41.0.0 Charoite
                Analysis ID:1561665
                Start date and time:2024-11-24 03:48:12 +01:00
                Joe Sandbox product:CloudBasic
                Overall analysis duration:0h 2m 14s
                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:PacketParser.dll
                Detection:SUS
                Classification:sus22.troj.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, otelrules.azureedge.net, otelrules.afd.azureedge.net, azureedge-t-prod.trafficmanager.net
                • Not all processes where analyzed, report is missing behavior information
                TimeTypeDescription
                21:49:19API Interceptor1x Sleep call for process: loaddll32.exe modified
                No context
                MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                s-part-0035.t-0009.t-msedge.net4yOuoT4GFy.exeGet hashmaliciousAsyncRATBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousLummaC StealerBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousAmadey, Credential Flusher, Cryptbot, LummaC Stealer, Stealc, VidarBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousLummaC StealerBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousLummaC StealerBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousStealcBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousStealcBrowse
                • 13.107.246.63
                CZxDiTktSY.exeGet hashmaliciousXWormBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousStealcBrowse
                • 13.107.246.63
                file.exeGet hashmaliciousAmadey, Credential Flusher, LummaC Stealer, StealcBrowse
                • 13.107.246.63
                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):6.19032493505293
                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:PacketParser.dll
                File size:411'328 bytes
                MD5:d1c1b8f61400f4af04d3d20d4c6a7107
                SHA1:96e33fc52b2e383edb76d67fa31c8e9f477a8844
                SHA256:fa88819f196af4cfd82fdef5c6b9681e6f900f1e7bd9c1b137596c8339955226
                SHA512:c1d53c756dfd552727ff99a4f651e4eeb424da899a45f58ec5638fddae5559f2c966bfc779fd46cdfe216e4cc380c8ae2e3888b18bc7121afd79acc4ad808dcb
                SSDEEP:6144:B+562zSkoShcsUTp34NcXPJSPfN/9o+GzTqoTUz:lShRUTiSAfNFtmUz
                TLSH:FD947E05179C3736D59F777AD0B61475ABF1A18EB6E2EA4F7D00A4AB8C527C18C02B23
                File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L...Wl............" ..0..............)... ...@....... ..............................\.....`................................
                Icon Hash:7ae282899bbab082
                Entrypoint:0x100629f6
                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:0x9ED26C57 [Tue Jun 9 04:00:23 2054 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]
                add byte ptr [eax], al
                add byte ptr [eax], al
                or eax, 1C1C1C17h
                sbb al, 1Ch
                sbb al, 1Ch
                sbb byte ptr [esi], bl
                sbb al, 1Ch
                push ds
                sbb al, 1Ch
                sbb al, 1Ch
                sbb al, 1Ch
                sbb al, 1Ch
                push ds
                sbb al, 1Ch
                sbb al, 1Ch
                sbb al, 1Ch
                sbb al, 1Ch
                sbb al, 06h
                or cl, byte ptr [edx]
                or al, 0Dh
                push es
                or byte ptr [ebx], cl
                or cl, byte ptr [edx]
                or byte ptr [ebx], cl
                or byte ptr [esi], al
                push es
                push es
                add eax, 06060505h
                push es
                push es
                push es
                push es
                push es
                pop es
                or byte ptr [edi], cl
                push es
                or al, 0Ah
                or eax, 07070706h
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                pop es
                or byte ptr [edi], al
                or byte ptr [060E0D13h], cl
                NameVirtual AddressVirtual Size Is in Section
                IMAGE_DIRECTORY_ENTRY_EXPORT0x00x0
                IMAGE_DIRECTORY_ENTRY_IMPORT0x629a40x4f.text
                IMAGE_DIRECTORY_ENTRY_RESOURCE0x640000x338.rsrc
                IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
                IMAGE_DIRECTORY_ENTRY_SECURITY0x61a000x2cc0
                IMAGE_DIRECTORY_ENTRY_BASERELOC0x660000xc.reloc
                IMAGE_DIRECTORY_ENTRY_DEBUG0x629880x1c.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
                .text0x20000x610600x612002f4e0c9e299136f12bfaf2d2da893b97False0.40679546734234234data6.139761956122845IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
                .rsrc0x640000x3380x400edf628d3f049ce42be02c1c7c535da76False0.3486328125data2.6582814138089614IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
                .reloc0x660000xc0x200e7ada3051e6335acfbe757059472cbdbFalse0.044921875data0.10191042566270775IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
                NameRVASizeTypeLanguageCountryZLIB Complexity
                RT_VERSION0x640580x2dcdata0.4453551912568306
                DLLImport
                mscoree.dll_CorDllMain
                TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                Nov 24, 2024 03:49:16.339081049 CET1.1.1.1192.168.2.60x9abNo error (0)shed.dual-low.s-part-0035.t-0009.t-msedge.nets-part-0035.t-0009.t-msedge.netCNAME (Canonical name)IN (0x0001)false
                Nov 24, 2024 03:49:16.339081049 CET1.1.1.1192.168.2.60x9abNo error (0)s-part-0035.t-0009.t-msedge.net13.107.246.63A (IP address)IN (0x0001)false

                Click to jump to process

                Click to jump to process

                Click to jump to process

                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\PacketParser.dll"
                Imagebase:0x140000
                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:0x7ff66e660000
                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:3
                Start time:21:49:19
                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\PacketParser.dll",#1
                Imagebase:0x1c0000
                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:4
                Start time:21:49:19
                Start date:23/11/2024
                Path:C:\Windows\SysWOW64\rundll32.exe
                Wow64 process (32bit):true
                Commandline:rundll32.exe "C:\Users\user\Desktop\PacketParser.dll",#1
                Imagebase:0x170000
                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