What is cruwblocker.sys?
cruwblocker.sys is part of CRU USB WriteBlocker and developed by CRU Acquisition Group, LLC according to the cruwblocker.sys version information.
cruwblocker.sys's description is "CRU USB WriteBlocker (x64)"
cruwblocker.sys is digitally signed by CRU Acquisition Group, LLC.
cruwblocker.sys is usually located in the 'C:\WINDOWS\system32\drivers\' folder.
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 cruwblocker.sys:
| Property | Value |
|---|---|
| Product name | CRU USB WriteBlocker |
| Company name | CRU Acquisition Group, LLC |
| File description | CRU USB WriteBlocker (x64) |
| Internal name | CRUWBlocker.sys |
| Original filename | CRUWBlocker.sys |
| Legal copyright | Copyright (c) 2018 CRU Acquisition Group, LLC |
| Product version | 1.2.1.1 |
| File version | 1.2.1.1 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | CRU USB WriteBlocker |
| Company name | CRU Acquisition Group, LLC |
| File description | CRU USB WriteBlocker (x64) |
| Internal name | CRUWBlocker.sys |
| Original filename | CRUWBlocker.sys |
| Legal copyright | Copyright (c) 2018 CRU Acquisition G.. |
| Product version | 1.2.1.1 |
| File version | 1.2.1.1 |
Digital signatures [?]
cruwblocker.sys has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | CRU Acquisition Group, LLC |
| Certificate issuer name | DigiCert EV Code Signing CA (SHA2) |
| Certificate serial number | 07911ca7f1b1e1f78752d83147567965 |
VirusTotal report
The file has been queued for scanning by the anti-virus programs at VirusTotal. The results will be available here in approximately 10 minutes. Thank you for your patience.
Hashes [?]
| Property | Value |
|---|---|
| MD5 | 56627227646fa762c1a92dc921693459 |
| SHA256 | f59be364eb9360c999c6f68218100d0a343ba8d1d67e5ac4419dd79c56a7a18c |
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. 33% have voted for removal. Based on votes from 3 users.
NOTE: Please do not use this poll as the only source of input to determine what you will do with the file. Only 3 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.
And now some shameless self promotion ;)
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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.
I've been gathering info on this as it cam installed on a pair of Xiaomi 2 TB High Speed USB 3.0 Flash Drives with U-Drive firmware according to the manufacturer.
Specifications:
1. Interface: USB 3.0;
2.USB connection, support plug and play;
3.USB service voltage: 4.5 v-5.5v;
4. No external power supply required;
5. Support multiple operating systems; Win98/ME/2000/xp/visa/win7/win8. Mac OS 9.x/ Linux 2.4 or above;
7. Solid-state storage, shockproof, anti-electromagnetic;
8. writing/protection place;
9. Persistent data storage;
10. The transmission write speed is fast/is read and read at high speed, no drive/pulse feed only needs to be turned on;
11. Hardware requirements: PC, notebook and mac with USB connection;
12. Storage life: more than 10 years; Class hood can be erased 100000 times;
Information that I've gotten so far:
Driver Version: 1.2.1.1
Provider: CRU Acquisition Group, LLC
Base Container Id: {68d696a7-184d-5ca4-8b5a-ba088ad57594}
Inf Section: CRUWBlocker_install.NT
included Inf: disk.inf
Physical Device Object Name: \Device\00000062
Reported Device ID hash: 2AD5DB2B
Product name CRU USB WriteBlocker
Company name CRU Acquisition Group, LLC
File description CRU USB WriteBlocker (x64)
Internal name CRUWBlocker.sys
Original filename CRUWBlocker.sys
Legal copyright Copyright (c) 2018 CRU Acquisition G..
Product version 1.2.1.1
File version 1.2.1.1
Certificate issuer name - DigiCert EV Code Signing CA (SHA2)
Certificate serial number 07911ca7f1b1e1f78752d83147567965
C:\WINDOWS\system32\drivers\version 1.2.1.1
MD5 56627227646fa762c1a92dc921693459
SHA256 f59be364eb9360c999c6f68218100d0a343ba8d1d67e5ac4419dd79c56a7a18c
# 28 May 2025, 2:05
Birdman2can writes
I've been gathering info on this as it cam installed on a pair of Xiaomi 2 TB High Speed USB 3.0 Flash Drives with U-Drive firmware according to the manufacturer.
Specifications:
1. Interface: USB 3.0;
2.USB connection, support plug and play;
3.USB service voltage: 4.5 v-5.5v;
4. No external power supply required;
5. Support multiple operating systems; Win98/ME/2000/xp/visa/win7/win8. Mac OS 9.x/ Linux 2.4 or above;
7. Solid-state storage, shockproof, anti-electromagnetic;
8. writing/protection place;
9. Persistent data storage;
10. The transmission write speed is fast/is read and read at high speed, no drive/pulse feed only needs to be turned on;
11. Hardware requirements: PC, notebook and mac with USB connection;
12. Storage life: more than 10 years; Class hood can be erased 100000 times;
Information that I've gotten so far:
Driver Version: 1.2.1.1
Provider: CRU Acquisition Group, LLC
Base Container Id: {68d696a7-184d-5ca4-8b5a-ba088ad57594}
Inf Section: CRUWBlocker_install.NT
included Inf: disk.inf
Physical Device Object Name: \Device\00000062
Reported Device ID hash: 2AD5DB2B
Product name CRU USB WriteBlocker
Company name CRU Acquisition Group, LLC
File description CRU USB WriteBlocker (x64)
Internal name CRUWBlocker.sys
Original filename CRUWBlocker.sys
Legal copyright Copyright (c) 2018 CRU Acquisition G..
Product version 1.2.1.1
File version 1.2.1.1
Certificate issuer name - DigiCert EV Code Signing CA (SHA2)
Certificate serial number 07911ca7f1b1e1f78752d83147567965
C:\WINDOWS\system32\drivers\version 1.2.1.1
MD5 56627227646fa762c1a92dc921693459
SHA256 f59be364eb9360c999c6f68218100d0a343ba8d1d67e5ac4419dd79c56a7a18c
# 28 May 2025, 2:05
Birdman2can writes