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Windows Analysis Report
file.dll

Overview

General Information

Sample name:file.dll
Analysis ID:1563910
MD5:2e5f127cb0a69cdd46aa4fd9e603f982
SHA1:994a6ab276c417301ed9208aaaf6719bf9594bc6
SHA256:c552d11db168a4f64db584283a617a6ec51ab6095c20ba4b706c3138beb68a22
Tags:NETdllMSILuser-jstrosch
Infos:

Detection

Score:60
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
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)
Sample file is different than original file name gathered from version info

Classification

  • System is w10x64
  • loaddll32.exe (PID: 6528 cmdline: loaddll32.exe "C:\Users\user\Desktop\file.dll" MD5: 51E6071F9CBA48E79F10C84515AAE618)
    • conhost.exe (PID: 2700 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
    • cmd.exe (PID: 2948 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\file.dll",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B)
      • rundll32.exe (PID: 3060 cmdline: rundll32.exe "C:\Users\user\Desktop\file.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

AV Detection

barindex
Source: file.dllAvira: detected
Source: file.dllReversingLabs: Detection: 44%
Source: Submited SampleIntegrated Neural Analysis Model: Matched 94.3% probability
Source: file.dllStatic PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: file.dllBinary or memory string: OriginalFilenameServiceManager.dll> vs file.dll
Source: file.dll, Helper.csCryptographic APIs: 'TransformFinalBlock'
Source: file.dll, Helper.csCryptographic APIs: 'TransformFinalBlock'
Source: classification engineClassification label: mal60.winDLL@6/0@0/0
Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:2700:120:WilError_03
Source: file.dllStatic PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: file.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\file.dll",#1
Source: file.dllReversingLabs: Detection: 44%
Source: unknownProcess created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\file.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\file.dll",#1
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\file.dll",#1
Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\file.dll",#1Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\file.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: file.dllStatic PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: file.dllStatic PE information: 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\file.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 Services1
Archive Collected Data
Data 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
Deobfuscate/Decode Files or Information
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: 1563910 Sample: file.dll Startdate: 27/11/2024 Architecture: WINDOWS Score: 60 15 Antivirus / Scanner detection for submitted sample 2->15 17 Multi AV Scanner detection for submitted file 2->17 19 AI detected suspicious sample 2->19 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
file.dll45%ReversingLabsWin32.Trojan.SpywareX
file.dll100%AviraTR/Agent_AGen.whpfg
No Antivirus matches
No Antivirus matches
No Antivirus matches
No Antivirus matches
No contacted domains info
No contacted IP infos
Joe Sandbox version:41.0.0 Charoite
Analysis ID:1563910
Start date and time:2024-11-27 16:20:42 +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:file.dll
Detection:MAL
Classification:mal60.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
  • Not all processes where analyzed, report is missing behavior information
  • VT rate limit hit for: file.dll
TimeTypeDescription
10:21:45API 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):5.228487513855754
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:file.dll
File size:14'848 bytes
MD5:2e5f127cb0a69cdd46aa4fd9e603f982
SHA1:994a6ab276c417301ed9208aaaf6719bf9594bc6
SHA256:c552d11db168a4f64db584283a617a6ec51ab6095c20ba4b706c3138beb68a22
SHA512:4455cb3b9d4a9c69abec7180e9a60e16e6be0ae2290f48aa09c5d926370de5512ced4d37b6e6e49515d5f51999211eff6f751c4594db936882fb7f40ee5bf97e
SSDEEP:192:D6FAiNLB2n5QnRBiMcs/XAaICPczrOFsgXTZr106Yq6IW1yShrM7+WAMLuO1Jjm:Ziq5QRBiMn/wpDUtTZ5nYsShY3AgJjm
TLSH:72623B6A73D4873EC5FD0EB24CB393011B70DA08DD12FF2F1DC8605A5D63A998B52A66
File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L......e.........." ..P..2..........6P... ...`....... ....................................@................................
Icon Hash:7ae282899bbab082
Entrypoint:0x10005036
Entrypoint Section:.text
Digitally signed:false
Imagebase:0x10000000
Subsystem:windows cui
Image File Characteristics:EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, DLL
DLL Characteristics:DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Time Stamp:0x65E8DF9F [Wed Mar 6 21:26:55 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
Instruction
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NameVirtual AddressVirtual Size Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT0x00x0
IMAGE_DIRECTORY_ENTRY_IMPORT0x4fe40x4f.text
IMAGE_DIRECTORY_ENTRY_RESOURCE0x60000x3a8.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
IMAGE_DIRECTORY_ENTRY_SECURITY0x00x0
IMAGE_DIRECTORY_ENTRY_BASERELOC0x80000xc.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
.text0x20000x303c0x32001a0e8d2754c14df384893fafcd50de70False0.490703125data5.5685225908472455IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
.rsrc0x60000x3a80x400157428c07809d6ce40f9818c91e79f11False0.3671875data2.913002383567436IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.reloc0x80000xc0x200fafb00c437380fe23500583dabecd932False0.044921875data0.08153941234324169IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
NameRVASizeTypeLanguageCountryZLIB Complexity
RT_VERSION0x60580x34cdata0.41113744075829384
DLLImport
mscoree.dll_CorDllMain
No network behavior found

Click to jump to process

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Target ID:0
Start time:10:21:44
Start date:27/11/2024
Path:C:\Windows\System32\loaddll32.exe
Wow64 process (32bit):true
Commandline:loaddll32.exe "C:\Users\user\Desktop\file.dll"
Imagebase:0x440000
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:10:21:44
Start date:27/11/2024
Path:C:\Windows\System32\conhost.exe
Wow64 process (32bit):false
Commandline:C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:0x7ff6ee680000
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:10:21:45
Start date:27/11/2024
Path:C:\Windows\SysWOW64\cmd.exe
Wow64 process (32bit):true
Commandline:cmd.exe /C rundll32.exe "C:\Users\user\Desktop\file.dll",#1
Imagebase:0xa40000
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:10:21:45
Start date:27/11/2024
Path:C:\Windows\SysWOW64\rundll32.exe
Wow64 process (32bit):true
Commandline:rundll32.exe "C:\Users\user\Desktop\file.dll",#1
Imagebase:0xd00000
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