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Windows Analysis Report
file.dll

Overview

General Information

Sample name:file.dll
Analysis ID:1563899
MD5:9c3d90ccf5d47f6eef83542bd08d5aeb
SHA1:0c0aa80c3411f98e8db7a165e39484e8dae424c7
SHA256:612898afdf9120cfef5843f9b136c66ecc3e0bb6f3d1527d0599a11988b7783c
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: 6160 cmdline: loaddll32.exe "C:\Users\user\Desktop\file.dll" MD5: 51E6071F9CBA48E79F10C84515AAE618)
    • conhost.exe (PID: 6600 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
    • cmd.exe (PID: 6512 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\file.dll",#1 MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B)
      • rundll32.exe (PID: 2964 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: 47%
Source: Submited SampleIntegrated Neural Analysis Model: Matched 91.3% probability
Source: file.dllStatic PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: file.dllBinary or memory string: OriginalFilenameMicrophone.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\SM0:6600:120: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) 49.76%
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: 47%
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: 1563899 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.dll47%ReversingLabsWin32.Trojan.Generic
file.dll100%AviraTR/AVI.Agent.hflti
No Antivirus matches
No Antivirus matches
No Antivirus matches
No Antivirus matches
NameIPActiveMaliciousAntivirus DetectionReputation
s-part-0015.t-0009.t-msedge.net
13.107.246.43
truefalse
    high
    No contacted IP infos
    Joe Sandbox version:41.0.0 Charoite
    Analysis ID:1563899
    Start date and time:2024-11-27 16:14:07 +01:00
    Joe Sandbox product:CloudBasic
    Overall analysis duration:0h 5m 29s
    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:7
    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
    • 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
    • Stop behavior analysis, all processes terminated
    • Exclude process from analysis (whitelisted): dllhost.exe, WMIADAP.exe, SIHClient.exe
    • Excluded domains from analysis (whitelisted): client.wns.windows.com, login.live.com, slscr.update.microsoft.com, otelrules.azureedge.net, otelrules.afd.azureedge.net, ctldl.windowsupdate.com, azureedge-t-prod.trafficmanager.net, fe3cr.delivery.mp.microsoft.com
    • Not all processes where analyzed, report is missing behavior information
    • VT rate limit hit for: file.dll
    No simulations
    No context
    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    s-part-0015.t-0009.t-msedge.netFW_ Fwd_ Voice Mail Message - 5TH Judicial Circuit.emlGet hashmaliciousLure-BasedAttack, HTMLPhisherBrowse
    • 13.107.246.43
    UdY4Kc66Bc.exeGet hashmaliciousUnknownBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousLummaC, Amadey, Credential Flusher, Cryptbot, LummaC Stealer, Stealc, VidarBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousLummaC, Amadey, Credential Flusher, Cryptbot, LummaC Stealer, StealcBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousLummaCBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousRemcosBrowse
    • 13.107.246.43
    zhbEGHo55P.exeGet hashmaliciousLockBit ransomwareBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousLummaCBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousPureCrypter, LummaC, Amadey, LummaC Stealer, Stealc, VidarBrowse
    • 13.107.246.43
    file.exeGet hashmaliciousPureCrypter, LummaC, Amadey, Cryptbot, LummaC Stealer, Stealc, VidarBrowse
    • 13.107.246.43
    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):5.93095271233019
    TrID:
    • Win32 Dynamic Link Library (generic) Net Framework (1011504/3) 49.76%
    • Win32 Dynamic Link Library (generic) (1002004/3) 49.29%
    • Windows Screen Saver (13104/52) 0.64%
    • Win16/32 Executable Delphi generic (2074/23) 0.10%
    • Generic Win/DOS Executable (2004/3) 0.10%
    File name:file.dll
    File size:552'960 bytes
    MD5:9c3d90ccf5d47f6eef83542bd08d5aeb
    SHA1:0c0aa80c3411f98e8db7a165e39484e8dae424c7
    SHA256:612898afdf9120cfef5843f9b136c66ecc3e0bb6f3d1527d0599a11988b7783c
    SHA512:0786f802fbd24d4ab79651298a5ba042c275d7d01c6ac2c9b3ca1e4ee952de7676ec8abf68d226b72696e9480bd4d4615077163efbcda7cff6a5f717736cbdfe
    SSDEEP:12288:+0OeMv3MrIb8CkZKobg3Wi1bRuSvazv+Uro:ROe+WIb8CkZLbg3Wa8Waz2j
    TLSH:4CC46E21BBE0851BD16F33B2E0E60B2A57F1E4467726EB8F548096EA5ED37534C40B93
    File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L......e........... .....h............... ........@.. ....................................@................................
    Icon Hash:7ae282899bbab082
    Entrypoint:0x48862e
    Entrypoint Section:.text
    Digitally signed:false
    Imagebase:0x400000
    Subsystem:windows cui
    Image File Characteristics:EXECUTABLE_IMAGE, 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_IMPORT0x885e00x4c.text
    IMAGE_DIRECTORY_ENTRY_RESOURCE0x8a0000x364.rsrc
    IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
    IMAGE_DIRECTORY_ENTRY_SECURITY0x00x0
    IMAGE_DIRECTORY_ENTRY_BASERELOC0x8c0000xc.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_IAT0x8863c0x8.text
    IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT0x00x0
    IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR0x20000x48.text
    IMAGE_DIRECTORY_ENTRY_RESERVED0x00x0
    NameVirtual AddressVirtual SizeRaw SizeMD5Xored PEZLIB ComplexityFile TypeEntropyCharacteristics
    .text0x20000x866440x86800a37bf41e6b4e511fca7e9304af56d5e8False0.38404681691449816data5.941045350432776IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
    .rsrc0x8a0000x3640x4006c09b1a57f36ed63cbf9201aa1ffc372False0.361328125data2.751702682458256IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
    .reloc0x8c0000xc0x200a5294d23786cd646cf8cd85d51f801d6False0.044921875data0.10191042566270775IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
    NameRVASizeTypeLanguageCountryZLIB Complexity
    RT_VERSION0x8a0580x30cdata0.4346153846153846
    DLLImport
    mscoree.dll_CorDllMain
    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Nov 27, 2024 16:15:21.331608057 CET1.1.1.1192.168.2.50xf355No error (0)shed.dual-low.s-part-0015.t-0009.t-msedge.nets-part-0015.t-0009.t-msedge.netCNAME (Canonical name)IN (0x0001)false
    Nov 27, 2024 16:15:21.331608057 CET1.1.1.1192.168.2.50xf355No error (0)s-part-0015.t-0009.t-msedge.net13.107.246.43A (IP address)IN (0x0001)false

    Click to jump to process

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    Click to jump to process

    Target ID:0
    Start time:10:15:27
    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:0xc30000
    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:10:15:27
    Start date:27/11/2024
    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:3
    Start time:10:15:28
    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: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:4
    Start time:10:15:28
    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:0x7b0000
    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