What is OczTrimCoinstaller.dll?

OczTrimCoinstaller.dll is part of Toshiba SSD controller TRIM filter and developed by TOSHIBA CORPORATION according to the OczTrimCoinstaller.dll version information.

OczTrimCoinstaller.dll's description is "Coinstaller for TRIM filter"

OczTrimCoinstaller.dll is digitally signed by Toshiba America Electronic Components, Inc..

OczTrimCoinstaller.dll is usually located in the 'C:\Windows\system32\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about OczTrimCoinstaller.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 64 anti-virus programs at VirusTotal detected the OczTrimCoinstaller.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": [
        "API-MS-Win-Core-LocalRegistry-L1-1-0.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
    ],
    "file_opened": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
    ],
    "command_line": [
        "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll,DllMain"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll.manifest"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Setup\\SourcePath",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorUseSystemHeap",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\DevicePath",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorSystemHeapIsPrivate"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2800,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
            ],
            "command_line": [
                "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll,DllMain"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll.manifest"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1599749586.75,
        "ppid": 2924
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1599749586.328125,
        "ppid": 376
    },
    {
        "process_path": "C:\\Windows\\System32\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2500,
        "summary": {
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll.manifest"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Setup\\SourcePath",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorUseSystemHeap",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\DevicePath",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\OLE\\PageAllocatorSystemHeapIsPrivate"
            ],
            "dll_loaded": [
                "API-MS-Win-Core-LocalRegistry-L1-1-0.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\6157efa10445c207290f44cfe88d6b90f96292434f43a8ae64c9a33fdec2e81d.bin.dll"
            ]
        },
        "first_seen": 1599749586.921875,
        "ppid": 2800
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "C:\\proj\\drivers\\r6\\ocznvme_win\\x64\\Win7Release\\OczTrimCoinstaller.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    }
]

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": 6.225225925445557,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4434,
            "time": 6.1597959995269775,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4762,
            "time": 4.16046404838562,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5090,
            "time": 6.16716194152832,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5418,
            "time": 4.668224096298218,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5746,
            "time": 3.062303066253662,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6074,
            "time": 4.23140287399292,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 17922,
            "time": 4.193727016448975,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 22114,
            "time": 6.24247407913208,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "f0d92f2a1aa89871ec9d3750c939ef946b59aabfd01173935a2870deee544144",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "20bdbf8c0250a8dd1b29879c924b9ca50ba9900004bef48b5aee98fc0cee5455",
    "irc": [],
    "https_ex": []
}

Screenshots

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.

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