What is atc.sys?

atc.sys is part of Bitdefender® ATC and developed by Bitdefender S.R.L. Bucharest, ROMANIA according to the atc.sys version information.

atc.sys's description is "Bitdefender Active Threat Control Filesystem Minifilter"

atc.sys is digitally signed by Bitdefender SRL.

atc.sys is usually located in the 'C:\Windows\system32\drivers\' folder.

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

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 atc.sys:

PropertyValue
Product nameBitdefender® ATC
Company nameBitdefender S.R.L. Bucharest, ROMANIA
File descriptionBitdefender Active Threat Control Filesystem Minifilter
Internal nameATC.SYS
Original filenameATC.SYS
Legal copyright© Bitdefender S.R.L. All rights reserved.
Product version13
File version1.26.205.0 0x18225f0

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

Product nameBitdefender® ATC
Company nameBitdefender S.R.L. Bucharest, ROMANIA
File descriptionBitdefender Active Threat Control Fi..
Internal nameATC.SYS
Original filenameATC.SYS
Legal copyright© Bitdefender S.R.L. All rights res..
Product version13
File version1.26.205.0 0x18225f0

Digital signatures [?]

atc.sys has a valid digital signature.

PropertyValue
Signer nameBitdefender SRL
Certificate issuer nameDigiCert Assured ID Code Signing CA-1
Certificate serial number0d539ce22c8990bd091f22aea32a5123

VirusTotal report

None of the 64 anti-virus programs at VirusTotal detected the atc.sys file.

None of the 64 anti-virus programs detected the atc.sys file.

Sandbox Report

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

Summary

ERROR: Failed to execute process.

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1565934785.5156,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "D:\\Bamboo\\home\\xml-data\\build-dir\\ATC-DEFAULT-SOURCES\\bin\\x64\\Release\\atc\\atc.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 3,
        "families": [],
        "description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
        "severity": 1,
        "marks": [
            {
                "category": "section",
                "ioc": ".code",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "PAGE",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "INIT",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_features"
    }
]

Yara

The Yara rules did not detect anything in the file.

Network

{
    "tls": [],
    "udp": [
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 826,
            "time": 4.1547169685364,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 1154,
            "time": 3.044900894165,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 1482,
            "time": 4.1771578788757,
            "dport": 3702,
            "sport": 49152
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "5741461be25d0acf8cce15f1400b62034dcb926a0e0290cf24876dcea81927f0",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "7182f1ff88b753fcd191b57f36f4f35a7887f0eda9ca13c340419256c77aa6e6",
    "irc": [],
    "https_ex": []
}

Other files also named atc.sys

atc.sys (28 votes)

Hashes [?]

PropertyValue
MD5e69ba88a54bdc3fee6647dd77ef2b890
SHA256593438532cef60f99078602c3e2bdce90a5107a9528e69b024732da44d63c0aa

What will you do with atc.sys?

To help other users, please let us know what you will do with atc.sys:



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