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Windows Analysis Report
1f0000.dll

Overview

General Information

Sample Name:1f0000.dll
Analysis ID:725157
MD5:fb46a45c032fb8b5798f00878af54464
SHA1:e8e054a8c8aa27120909bb89725b36f5a7136d98
SHA256:576413cc88f47adde6685639f88d17d495fff4475c89603fe83078f81ee20846
Tags:dllgozi
Infos:

Detection

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

Signatures

Antivirus / Scanner detection for submitted sample
Yara detected Ursnif
Machine Learning detection for sample
Sample execution stops while process was sleeping (likely an evasion)
Uses 32bit PE files
PE file does not import any functions
Tries to load missing DLLs
Program does not show much activity (idle)
Creates a process in suspended mode (likely to inject code)
Checks if the current process is being debugged

Classification

  • System is w10x64
  • loaddll32.exe (PID: 5092 cmdline: loaddll32.exe "C:\Users\user\Desktop\1f0000.dll" MD5: 1F562FBF37040EC6C43C8D5EF619EA39)
    • conhost.exe (PID: 2064 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • cmd.exe (PID: 4996 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1 MD5: F3BDBE3BB6F734E357235F4D5898582D)
      • rundll32.exe (PID: 4668 cmdline: rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1 MD5: D7CA562B0DB4F4DD0F03A89A1FDAD63D)
  • cleanup
{"RSA Public Key": "GM4Kf/Z6rOnx7ZeOHNCGqGU1EYR+rHVcPFJfnB66sRxq8TdAtJ8I/FA73jILYN/O7GBQZXfAayteZ+p+Oku4j4TsVhRTMO69ts5LXnUBL3YpRQLuom+BvNzXjhoKt16kcxpwisrVl8sSl78o2iV+WuT7m9YMZQozEdttRTBIHJpzQtPr0h5BHHk+OiA9EQSDmlX7UvBgY8bViZ8LVgRE2j8GEgfNQW2WNlu1n810ZdnxshlFew+L2+9Be0oR+u+GXheI+qCLyYBkG5dNS0/RoFfmz5khmlLokQND0e2gq8+13HHHxrou4IGiYjMoDNLBLxynxiy1GeKRmyNpR0hR7RNZZpmu8ADCXrY93ygL4yQ=", "c2_domain": ["trackingg-protectioon.cdn1.mozilla.net", "siwdmfkshsgw.com", "trackingg-protectioon.cdn1.mozilla.net", "188.127.224.114", "weiqeqwns.com", "weiqeqwens.com", "weiqewqwns.com", "iujdhsndjfks.com", "ijduwhsbvk.com"], "botnet": "10103", "server": "50", "serpent_key": "9wGFk6w5pVKRz0Hz", "sleep_time": "1", "CONF_TIMEOUT": "20", "SetWaitableTimer_value": "0"}
SourceRuleDescriptionAuthorStrings
1f0000.dllJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
    No Sigma rule has matched
    No Snort rule has matched

    Click to jump to signature section

    Show All Signature Results

    AV Detection

    barindex
    Source: 1f0000.dllAvira: detected
    Source: 1f0000.dllJoe Sandbox ML: detected
    Source: 1f0000.dllMalware Configuration Extractor: Ursnif {"RSA Public Key": "GM4Kf/Z6rOnx7ZeOHNCGqGU1EYR+rHVcPFJfnB66sRxq8TdAtJ8I/FA73jILYN/O7GBQZXfAayteZ+p+Oku4j4TsVhRTMO69ts5LXnUBL3YpRQLuom+BvNzXjhoKt16kcxpwisrVl8sSl78o2iV+WuT7m9YMZQozEdttRTBIHJpzQtPr0h5BHHk+OiA9EQSDmlX7UvBgY8bViZ8LVgRE2j8GEgfNQW2WNlu1n810ZdnxshlFew+L2+9Be0oR+u+GXheI+qCLyYBkG5dNS0/RoFfmz5khmlLokQND0e2gq8+13HHHxrou4IGiYjMoDNLBLxynxiy1GeKRmyNpR0hR7RNZZpmu8ADCXrY93ygL4yQ=", "c2_domain": ["trackingg-protectioon.cdn1.mozilla.net", "siwdmfkshsgw.com", "trackingg-protectioon.cdn1.mozilla.net", "188.127.224.114", "weiqeqwns.com", "weiqeqwens.com", "weiqewqwns.com", "iujdhsndjfks.com", "ijduwhsbvk.com"], "botnet": "10103", "server": "50", "serpent_key": "9wGFk6w5pVKRz0Hz", "sleep_time": "1", "CONF_TIMEOUT": "20", "SetWaitableTimer_value": "0"}
    Source: 1f0000.dllStatic PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL

    Key, Mouse, Clipboard, Microphone and Screen Capturing

    barindex
    Source: Yara matchFile source: 1f0000.dll, type: SAMPLE

    E-Banking Fraud

    barindex
    Source: Yara matchFile source: 1f0000.dll, type: SAMPLE
    Source: 1f0000.dllStatic PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
    Source: 1f0000.dllStatic PE information: No import functions for PE file found
    Source: C:\Windows\System32\loaddll32.exeSection loaded: .dllJump to behavior
    Source: C:\Windows\System32\loaddll32.exeSection loaded: .dllJump to behavior
    Source: C:\Windows\System32\loaddll32.exeSection loaded: .dllJump to behavior
    Source: 1f0000.dllStatic PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
    Source: C:\Windows\System32\loaddll32.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
    Source: classification engineClassification label: mal60.troj.winDLL@6/0@0/0
    Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1
    Source: unknownProcess created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\1f0000.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\1f0000.dll",#1
    Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1
    Source: C:\Windows\System32\loaddll32.exeProcess created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1Jump to behavior
    Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1Jump to behavior
    Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:2064:120:WilError_01

    Hooking and other Techniques for Hiding and Protection

    barindex
    Source: Yara matchFile source: 1f0000.dll, type: SAMPLE
    Source: C:\Windows\SysWOW64\rundll32.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
    Source: C:\Windows\System32\conhost.exeLast function: Thread delayed
    Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
    Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
    Source: C:\Windows\System32\loaddll32.exeProcess queried: DebugPortJump to behavior
    Source: C:\Windows\SysWOW64\cmd.exeProcess created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1Jump to behavior

    Stealing of Sensitive Information

    barindex
    Source: Yara matchFile source: 1f0000.dll, type: SAMPLE

    Remote Access Functionality

    barindex
    Source: Yara matchFile source: 1f0000.dll, type: SAMPLE
    Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and ControlNetwork EffectsRemote Service EffectsImpact
    Valid AccountsWindows Management Instrumentation1
    DLL Side-Loading
    11
    Process Injection
    1
    Virtualization/Sandbox Evasion
    OS Credential Dumping1
    Security Software Discovery
    Remote ServicesData from Local SystemExfiltration Over Other Network MediumData ObfuscationEavesdrop on Insecure Network CommunicationRemotely Track Device Without AuthorizationModify System Partition
    Default AccountsScheduled Task/JobBoot or Logon Initialization Scripts1
    DLL Side-Loading
    1
    Rundll32
    LSASS Memory1
    Virtualization/Sandbox Evasion
    Remote Desktop ProtocolData from Removable MediaExfiltration Over BluetoothJunk DataExploit SS7 to Redirect Phone Calls/SMSRemotely Wipe Data Without AuthorizationDevice Lockout
    Domain AccountsAt (Linux)Logon Script (Windows)Logon Script (Windows)11
    Process Injection
    Security Account Manager1
    System Information Discovery
    SMB/Windows Admin SharesData from Network Shared DriveAutomated ExfiltrationSteganographyExploit SS7 to Track Device LocationObtain Device Cloud BackupsDelete Device Data
    Local AccountsAt (Windows)Logon Script (Mac)Logon Script (Mac)1
    DLL Side-Loading
    NTDSSystem Network Configuration DiscoveryDistributed Component Object ModelInput CaptureScheduled TransferProtocol ImpersonationSIM Card SwapCarrier Billing Fraud
    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: 725157 Sample: 1f0000.dll Startdate: 18/10/2022 Architecture: WINDOWS Score: 60 15 Antivirus / Scanner detection for submitted sample 2->15 17 Yara detected  Ursnif 2->17 19 Machine Learning detection for 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
    1f0000.dll100%AviraHEUR/AGEN.1245293
    1f0000.dll100%Joe Sandbox ML
    No Antivirus matches
    No Antivirus matches
    No Antivirus matches
    No Antivirus matches
    No contacted domains info
    No contacted IP infos
    Joe Sandbox Version:36.0.0 Rainbow Opal
    Analysis ID:725157
    Start date and time:2022-10-18 10:00:28 +02:00
    Joe Sandbox Product:CloudBasic
    Overall analysis duration:0h 2m 45s
    Hypervisor based Inspection enabled:false
    Report type:full
    Sample file name:1f0000.dll
    Cookbook file name:default.jbs
    Analysis system description:Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 104, IE 11, Adobe Reader DC 19, Java 8 Update 211
    Number of analysed new started processes analysed:4
    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
    • HDC enabled
    • AMSI enabled
    Analysis Mode:default
    Analysis stop reason:Timeout
    Detection:MAL
    Classification:mal60.troj.winDLL@6/0@0/0
    EGA Information:Failed
    HDC 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
    • 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) (GUI) Intel 80386, for MS Windows
    Entropy (8bit):6.688246877126844
    TrID:
    • Win32 Dynamic Link Library (generic) (1002004/3) 99.60%
    • Generic Win/DOS Executable (2004/3) 0.20%
    • DOS Executable Generic (2002/1) 0.20%
    • Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
    File name:1f0000.dll
    File size:44544
    MD5:fb46a45c032fb8b5798f00878af54464
    SHA1:e8e054a8c8aa27120909bb89725b36f5a7136d98
    SHA256:576413cc88f47adde6685639f88d17d495fff4475c89603fe83078f81ee20846
    SHA512:180f88f8d8bd89648d49cf6214e311159bfed43eb886b9e06456643f8a5938e55cfb2751e61d83d5d206b08627b89bf0be7f22907dafccaa39050bd1e30778be
    SSDEEP:768:FTmE+L5AkTXKMaqD4leJiArJBFkK527nhoZ3eGiJ18MGXFlkq9k34d:FTmE+L5AkTixchBOKinCZ3eGa18MGTRx
    TLSH:0313AE12F6F94CF2D7A25EB06620F6F467FE8A3121389441EB1359CA1EA0953D53E30B
    File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$........p...............i.......i..................H...:.......:.......:........i.......i.......i......Rich............PE..L.....%c...
    Icon Hash:74f0e4ecccdce0e4
    Entrypoint:0x10003908
    Entrypoint Section:.text
    Digitally signed:false
    Imagebase:0x10000000
    Subsystem:windows gui
    Image File Characteristics:EXECUTABLE_IMAGE, 32BIT_MACHINE, DLL
    DLL Characteristics:
    Time Stamp:0x632596BE [Sat Sep 17 09:43:26 2022 UTC]
    TLS Callbacks:
    CLR (.Net) Version:
    OS Version Major:5
    OS Version Minor:0
    File Version Major:5
    File Version Minor:0
    Subsystem Version Major:5
    Subsystem Version Minor:0
    Import Hash:
    Instruction
    mov eax, dword ptr [esp+08h]
    push esi
    xor esi, esi
    inc esi
    sub eax, 00000000h
    je 00007FE770FACDF5h
    dec eax
    jne 00007FE770FACE06h
    push 1000A2DCh
    call dword ptr [1000900Ch]
    cmp eax, esi
    jne 00007FE770FACDF7h
    push dword ptr [esp+08h]
    call 00007FE770FB0765h
    test eax, eax
    je 00007FE770FACDEAh
    xor esi, esi
    jmp 00007FE770FACDE6h
    push 1000A2DCh
    call dword ptr [10009010h]
    test eax, eax
    jne 00007FE770FACDD7h
    call 00007FE770FB0A4Bh
    mov eax, esi
    pop esi
    retn 000Ch
    shl eax, 02h
    push eax
    push dword ptr [esp+0Ch]
    push dword ptr [esp+0Ch]
    call 00007FE770FACAA8h
    add esp, 0Ch
    retn 0008h
    push ebp
    mov ebp, esp
    sub esp, 0Ch
    push ebx
    push esi
    push edi
    push dword ptr [ebp+10h]
    call 00007FE770FAD189h
    mov edi, eax
    test edi, edi
    je 00007FE770FACE29h
    mov eax, dword ptr [ebp+14h]
    push edi
    push dword ptr [ebp+0Ch]
    lea esi, dword ptr [edi+eax*2]
    push dword ptr [ebp+08h]
    xor eax, eax
    mov word ptr [esi], ax
    call 00007FE770FAAD7Eh
    mov ebx, eax
    test ebx, ebx
    jne 00007FE770FACDFBh
    lea eax, dword ptr [ebp-08h]
    push eax
    call dword ptr [10009020h]
    push 0000005Fh
    pop eax
    push 00000008h
    mov word ptr [esi], ax
    lea eax, dword ptr [ebp-08h]
    push eax
    push edi
    push dword ptr [ebp+0Ch]
    push 80000001h
    push dword ptr [ebp+08h]
    call 00007FE770FAFFFCh
    mov ebx, eax
    push edi
    push 00000000h
    push dword ptr [1000A2D8h]
    Programming Language:
    • [ASM] VS2008 SP1 build 30729
    • [IMP] VS2008 SP1 build 30729
    • [C++] VS2005 build 50727
    • [EXP] VS2008 SP1 build 30729
    • [LNK] VS2008 SP1 build 30729
    NameVirtual AddressVirtual Size Is in Section
    IMAGE_DIRECTORY_ENTRY_EXPORT0x9f100x34.rdata
    IMAGE_DIRECTORY_ENTRY_IMPORT0x98c40x50.rdata
    IMAGE_DIRECTORY_ENTRY_RESOURCE0x00x0
    IMAGE_DIRECTORY_ENTRY_EXCEPTION0x00x0
    IMAGE_DIRECTORY_ENTRY_SECURITY0x00x0
    IMAGE_DIRECTORY_ENTRY_BASERELOC0xc0000x760.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_IAT0x90000x130.rdata
    IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT0x92940xe0.rdata
    IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR0x00x0
    IMAGE_DIRECTORY_ENTRY_RESERVED0x00x0
    NameVirtual AddressVirtual SizeRaw SizeXored PEZLIB ComplexityFile TypeEntropyCharacteristics
    .text0x10000x77430x7800False0.6276041666666666data6.560546360535151IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
    .rdata0x90000xf440x1000False0.456298828125data4.69394943918653IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
    .data0xa0000x3e80x200False0.57421875ARJ archive data, v39, original name: , os: MS-DOS3.741032274129629IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
    .bss0xb0000xeae0x1000False0.899658203125MPEG-4 LOAS7.5169354931799335IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
    .reloc0xc0000x10000x1000False0.635986328125data5.680634081439042IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
    No network behavior found

    Click to jump to process

    Click to jump to process

    Click to jump to process

    Target ID:0
    Start time:10:01:24
    Start date:18/10/2022
    Path:C:\Windows\System32\loaddll32.exe
    Wow64 process (32bit):true
    Commandline:loaddll32.exe "C:\Users\user\Desktop\1f0000.dll"
    Imagebase:0xca0000
    File size:116736 bytes
    MD5 hash:1F562FBF37040EC6C43C8D5EF619EA39
    Has elevated privileges:true
    Has administrator privileges:true
    Programmed in:C, C++ or other language
    Reputation:moderate

    Target ID:1
    Start time:10:01:24
    Start date:18/10/2022
    Path:C:\Windows\System32\conhost.exe
    Wow64 process (32bit):false
    Commandline:C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
    Imagebase:0x7ff7c72c0000
    File size:625664 bytes
    MD5 hash:EA777DEEA782E8B4D7C7C33BBF8A4496
    Has elevated privileges:true
    Has administrator privileges:true
    Programmed in:C, C++ or other language
    Reputation:high

    Target ID:2
    Start time:10:01:24
    Start date:18/10/2022
    Path:C:\Windows\SysWOW64\cmd.exe
    Wow64 process (32bit):true
    Commandline:cmd.exe /C rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1
    Imagebase:0xd90000
    File size:232960 bytes
    MD5 hash:F3BDBE3BB6F734E357235F4D5898582D
    Has elevated privileges:true
    Has administrator privileges:true
    Programmed in:C, C++ or other language
    Reputation:high

    Target ID:3
    Start time:10:01:24
    Start date:18/10/2022
    Path:C:\Windows\SysWOW64\rundll32.exe
    Wow64 process (32bit):true
    Commandline:rundll32.exe "C:\Users\user\Desktop\1f0000.dll",#1
    Imagebase:0xb20000
    File size:61952 bytes
    MD5 hash:D7CA562B0DB4F4DD0F03A89A1FDAD63D
    Has elevated privileges:true
    Has administrator privileges:true
    Programmed in:C, C++ or other language
    Reputation:high

    No disassembly