What is YandexDisk3ShellExt-1511.dll?

YandexDisk3ShellExt-1511.dll is part of Shell Extension ??? ??????.???? 3.0 and developed by ?????? according to the YandexDisk3ShellExt-1511.dll version information.

YandexDisk3ShellExt-1511.dll's description is "YandexDisk3ShellExt"

YandexDisk3ShellExt-1511.dll is digitally signed by YANDEX LLC.

YandexDisk3ShellExt-1511.dll is usually located in the 'c:\users\%USERNAME%\appdata\roaming\yandex\yandexdisk2\3.1.7.2905\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about YandexDisk3ShellExt-1511.dll.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on YandexDisk3ShellExt-1511.dll:

PropertyValue
Product nameShell Extension ??? ??????.???? 3.0
Company name??????
File descriptionYandexDisk3ShellExt
Internal nameYandexDisk3ShellExt
Original filenameYandexDisk3ShellExt.dll
Legal copyright© 2016-2019 ??? "??????"
Product version3.1.7.2905
File version3.1.7.1511

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameShell Extension ??? ??????.???? 3.0
Company name??????
File descriptionYandexDisk3ShellExt
Internal nameYandexDisk3ShellExt
Original filenameYandexDisk3ShellExt.dll
Legal copyright© 2016-2019 ??? "??????"
Product version3.1.7.2905
File version3.1.7.1511

Digital signatures [?]

YandexDisk3ShellExt-1511.dll has a valid digital signature.

PropertyValue
Signer nameYANDEX LLC
Certificate issuer nameGlobalSign CodeSigning CA - G3
Certificate serial number653138923b9be62949657f5d

VirusTotal report

None of the 69 anti-virus programs at VirusTotal detected the YandexDisk3ShellExt-1511.dll file.

None of the 69 anti-virus programs detected the YandexDisk3ShellExt-1511.dll file.

Sandbox Report

The following information was gathered by executing the file inside Cuckoo Sandbox.

Summary

Successfully executed process in sandbox.

Summary

{
    "dll_loaded": [
        "kernel32",
        "api-ms-win-core-localization-l1-2-1",
        "api-ms-win-core-fibers-l1-1-1",
        "api-ms-win-core-synch-l1-2-0",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
    ],
    "file_opened": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
    ],
    "command_line": [
        " C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
    ],
    "regkey_opened": [
        "HKEY_CLASSES_ROOT\\.dll",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\dllfile\\AutoRegister",
        "HKEY_CLASSES_ROOT\\dllfile",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLEAUT"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\.dll\\(Default)",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\SysWOW64\\regsvr32.exe",
        "process_name": "regsvr32.exe",
        "pid": 2816,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
            ],
            "command_line": [
                " C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
            ],
            "regkey_opened": [
                "HKEY_CLASSES_ROOT\\.dll",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\dllfile\\AutoRegister",
                "HKEY_CLASSES_ROOT\\dllfile"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\.dll\\(Default)"
            ]
        },
        "first_seen": 1566150786.8281,
        "ppid": 2016
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1566150786.5156,
        "ppid": 376
    },
    {
        "process_path": "C:\\Windows\\System32\\regsvr32.exe",
        "process_name": "regsvr32.exe",
        "pid": 2588,
        "summary": {
            "regkey_opened": [
                "HKEY_CLASSES_ROOT\\.dll",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\dllfile\\AutoRegister",
                "HKEY_CLASSES_ROOT\\dllfile",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLEAUT"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\.dll\\(Default)",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
            ],
            "dll_loaded": [
                "kernel32",
                "api-ms-win-core-localization-l1-2-1",
                "api-ms-win-core-fibers-l1-1-1",
                "api-ms-win-core-synch-l1-2-0",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f.bin.dll"
            ]
        },
        "first_seen": 1566150787.0312,
        "ppid": 2816
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "C:\\BuildAgent\\work\\che-trunk-git-yandex-ru\\win\\YandexDiskUploader\\x64\\Release\\YandexDisk3ShellExt.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "The file contains an unknown PE resource name possibly indicative of a packer",
        "severity": 1,
        "marks": [
            {
                "category": "resource name",
                "ioc": "REGISTRY",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_unknown_resource_name"
    },
    {
        "markcount": 3,
        "families": [],
        "description": "Allocates read-write-execute memory (usually to unpack itself)",
        "severity": 2,
        "marks": [
            {
                "call": {
                    "category": "process",
                    "status": 1,
                    "stacktrace": [],
                    "api": "NtProtectVirtualMemory",
                    "return_value": 0,
                    "arguments": {
                        "process_identifier": 2588,
                        "stack_dep_bypass": 0,
                        "stack_pivoted": 0,
                        "heap_dep_bypass": 0,
                        "length": 4096,
                        "protection": 64,
                        "process_handle": "0xffffffffffffffff",
                        "base_address": "0x000007fef00cb000"
                    },
                    "time": 1566150787.2343,
                    "tid": 2500,
                    "flags": {
                        "protection": "PAGE_EXECUTE_READWRITE"
                    }
                },
                "pid": 2588,
                "type": "call",
                "cid": 17
            },
            {
                "call": {
                    "category": "process",
                    "status": 1,
                    "stacktrace": [],
                    "api": "NtProtectVirtualMemory",
                    "return_value": 0,
                    "arguments": {
                        "process_identifier": 2588,
                        "stack_dep_bypass": 0,
                        "stack_pivoted": 0,
                        "heap_dep_bypass": 0,
                        "length": 4096,
                        "protection": 64,
                        "process_handle": "0xffffffffffffffff",
                        "base_address": "0x000007feff8fd000"
                    },
                    "time": 1566150787.2343,
                    "tid": 2500,
                    "flags": {
                        "protection": "PAGE_EXECUTE_READWRITE"
                    }
                },
                "pid": 2588,
                "type": "call",
                "cid": 19
            },
            {
                "call": {
                    "category": "process",
                    "status": 1,
                    "stacktrace": [],
                    "api": "NtProtectVirtualMemory",
                    "return_value": 0,
                    "arguments": {
                        "process_identifier": 2588,
                        "stack_dep_bypass": 0,
                        "stack_pivoted": 0,
                        "heap_dep_bypass": 0,
                        "length": 4096,
                        "protection": 64,
                        "process_handle": "0xffffffffffffffff",
                        "base_address": "0x000007fefbfa1000"
                    },
                    "time": 1566150787.2343,
                    "tid": 2500,
                    "flags": {
                        "protection": "PAGE_EXECUTE_READWRITE"
                    }
                },
                "pid": 2588,
                "type": "call",
                "cid": 21
            }
        ],
        "references": [],
        "name": "allocates_rwx"
    }
]

Yara

The Yara rules did not detect anything in the file.

Network

{
    "tls": [],
    "udp": [
        {
            "src": "192.168.56.101",
            "dst": "192.168.56.255",
            "offset": 662,
            "time": 6.2127139568329,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5694,
            "time": 6.1523480415344,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6022,
            "time": 4.1779730319977,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6350,
            "time": 6.1628119945526,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6678,
            "time": 4.7974908351898,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 7006,
            "time": 3.05029296875,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 7334,
            "time": 4.7170300483704,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 20274,
            "time": 4.199187040329,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 28658,
            "time": 6.2778899669647,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "71405104e9fdd36bae1eae00718aeb49890f9444c05616a5018a80482ba18cca",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "c251fe79b9b11e495cc42c94710f614093de4d3b7ae83d11f888e1642ba170c1",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandboxScreenshot from the sandbox

Folder name variants

YandexDisk3ShellExt-1511.dll may also be located in other folders than c:\users\%USERNAME%\appdata\roaming\yandex\yandexdisk2\3.1.7.2905\. The most common variants are listed below:

Hashes [?]

PropertyValue
MD5c2081e295fdc4f230c8f95750ad82a54
SHA2568042df000c74d4edd88e020a76005396820680f06c170dfb155b8133d915667f

What will you do with the file?

To help other users, please let us know what you will do with the file:



What did other users do?

The poll result listed below shows what users chose to do with the file. 100% have voted for removal. Based on votes from 8 users.

Votes
Keep0 %
0
Remove100 %
8

NOTE: Please do not use this poll as the only source of input to determine what you will do with the file. Only 8 users has voted so far so it does not offer a high degree of confidence.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page


Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.

Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

No comments posted yet.

Leave a reply