What is utshellext.dll?

utshellext.dll is part of Uninstall Tool and developed by CrystalIDEA Software according to the utshellext.dll version information.

utshellext.dll's description is "Uninstall Tool Shell Extension"

utshellext.dll is digitally signed by CrystalBit Solutions.

utshellext.dll is usually located in the 'c:\Program Files\Uninstall Tool\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about utshellext.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.

VirusTotal report

None of the 66 anti-virus programs at VirusTotal detected the utshellext.dll file.

Sandbox Report

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

Summary

Successfully executed process in sandbox.

Summary

{
    "file_failed": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\languages\\English.xml",
        "C:\\Users\\cuck\\AppData\\Roaming\\CrystalIdea Software\\Uninstall Tool\\preferences.xml"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\595df900ddd426ba124198782a027a09d356cfe7924b7f69fa51696377535e0f.bin.dll.manifest",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\595df900ddd426ba124198782a027a09d356cfe7924b7f69fa51696377535e0f.bin.dll"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
    ],
    "dll_loaded": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\595df900ddd426ba124198782a027a09d356cfe7924b7f69fa51696377535e0f.bin.dll"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2816,
        "summary": {
            "file_failed": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\languages\\English.xml",
                "C:\\Users\\cuck\\AppData\\Roaming\\CrystalIdea Software\\Uninstall Tool\\preferences.xml"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\595df900ddd426ba124198782a027a09d356cfe7924b7f69fa51696377535e0f.bin.dll.manifest",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\595df900ddd426ba124198782a027a09d356cfe7924b7f69fa51696377535e0f.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ],
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\595df900ddd426ba124198782a027a09d356cfe7924b7f69fa51696377535e0f.bin.dll"
            ]
        },
        "first_seen": 1598957586.65625,
        "ppid": 2016
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1598957586.34375,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "G:\\Projects\\uninstall-tool\\Ready\\x86\\utshellext.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 1,
        "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": 2816,
                        "stack_dep_bypass": 0,
                        "stack_pivoted": 0,
                        "heap_dep_bypass": 0,
                        "length": 4096,
                        "protection": 64,
                        "process_handle": "0xffffffff",
                        "base_address": "0x10036000"
                    },
                    "time": 1598957586.76625,
                    "tid": 2420,
                    "flags": {
                        "protection": "PAGE_EXECUTE_READWRITE"
                    }
                },
                "pid": 2816,
                "type": "call",
                "cid": 10
            }
        ],
        "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": 546,
            "time": 3.078310012817383,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5326,
            "time": 3.010807991027832,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5654,
            "time": 1.0190708637237549,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5982,
            "time": 3.0181238651275635,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6310,
            "time": 1.5181457996368408,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6638,
            "time": -0.10203719139099121,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6966,
            "time": 1.5489330291748047,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 16764,
            "time": 1.054109811782837,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 25148,
            "time": 3.0935850143432617,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "d351d641f19cdef6649d24effecc5e6fb9baf5c6855d5a791a5a1638be5dbaa5",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "99dc070171dee8903deb528689fe46a0fd32211479548b2f99ee916410e1cadf",
    "irc": [],
    "https_ex": []
}

Screenshots

Other files also named utshellext.dll

utshellext.dll (5 votes)

Malware or legitimate?

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