You should read these troubleshooting guidelines if you receive a Microsoft Anti-Malware Quarantine Resource Data error message.
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Recently, my best colleague was personally interested in what would happen to the overall text of a file if a malicious file was still quarantined. The answer to this question varies considerably, as it is a hot secret for many antivirus vendors. For the most part, it is not described in great detail how they do the same voodoo. It looks like it could make a couple of good websites out of this, so I went ahead and did a little testing.
In this article, we’ll cover what happened in my Windows 8 virtual machine when I turned Windows Defender against this simple EICAR vicious.TXT file!
Windows Defender is a software system, a product that attemptsIt can detect and remove malware. Originally released only as an anti-spyware program, it was originally released as a free download for Windows XP, shipped by default with Windows Vista, and currently ships with antivirus features as part of Windows 10. – Wikipedia
I chose Windows Defender because it is free and has a very large market share. Nothing personal.
First things first. I got the EICAR file and saved it to C: temp.
Then I got a copy of a specific $ MFT to view the entry for that file. It looks like this:
There is a lot of movement there, but I just wanted to focus on a few things. If you get lost, check it out.
How do you get rid of Quarantine threats?
Open Windows Security.Select Virus & threat protection and click Protection history.Filter the list of all recently used items by quarantined items.Select the item you want to keep and take an action such as restore.
NEXT, I have enabled Windows Defender real-time protection. This has been recommended.
Does Windows Defender remove quarantined?
Removing or restoring information from Windows Defender Quarantine a: Open Windows Defender Security Center outside of the taskbar area. 2: Once opened, click the first option in the range titled “Virus and Risk Protection”. 5. You can easily remove items from quarantine by clicking the Remove Person button.
Let’s start by selecting the $ 27,152 mft record. So I quickly removed that $ MFT and got this:
So what has changed? The Record $ mft number can suit just about anything.
How do I remove a quarantined Trojan?
Once quarantined, malware information files cannot harm your system. 3. You can remove the quarantined files from your entire system by clicking “Discovered History.niya “. Here, just select the items you want to remove and click the remove button in the part of the window.
Sequence variety increased by 4, indicating which content has had a lot of changesnenii. Specifically rename and switch to the new parent folder.
Let’s take a closer look at USNJrnl- $ J to understand what happened:
How do I view quarantined files in Microsoft 365?
In the Microsoft 365 Defender portal, select Email & Collaboration> Analyze> Quarantine. In the Quarantine Show quarantine entry, switch to files with an increased value. You can sort by field by clicking the appropriate column heading. You can sort these results by clicking a possible column heading. Click Change Columns – Display up to ten columns.
### when I created the EICAR file and added the EICAR line it became. ###03/11/2015 03: 03: 23.186 ref_num = 27152-96 eicar.txt File_Create, Close03/11/2015 03:03:23 231 ref_num corresponds to 27152-97 eicar.txt File_Create, Data_Extend, Close03/11/2015 03: 06: 48.274 ref_num = 27152-97 eicar. This is txt data_extend, data_truncation, close### Windows Defender is now deleting the file. ###03/11/2015 03:07 AM: 20.379 ref_num equals 27152-97 eicar.txt Object_ID_Change, Close03/11/2015 03: 09: 43.529 ref_num = 27152-97 eicar.txt Basic_Info_Change, Data_Overwrite, File_Delete, Close### Because this data record number applies to bookings, it is reused for other content ###03/11/2015 03: 09: 43.534 ref_num = 27152-98 5A7D7B64F11FF203E09434276A974A97 File_Create, Data_Extend, Close
Therefore, briefly delete the Windows Defender Prime file. The MFT registration number needed to be obtained, so it was obtained from the newly created file C: ProgramData Microsoft Windows Defender Scans History RemCheck 5A7D7B64F11FF203E09434276A974A97
Where does Windows Defender Quarantine files?
By default, the memory of a computer with Windows Defender Virus is located in the following path: C: ProgramData Microsoft Windows Defender Quarantine.
Where did these EICAR files go? Windows Defender contains files in quarantine C: ProgramData Microsoft Windows Defender Quarantine ResourceData . Mine were saved in C: ProgramData Microsoft Windows Defender Quarantine ResourceData 50 50761523FA79FDF68E04707959836D1F6DBA9969.
Let’s take a look at this:
For those who don’t usually know, there is a wonderful 0B AD 00 counter in the Windows Defender and Microsoft Security Essentials quarantine files.
If you look at the histogram of the details, it is quite obvious that it was recorded with some kind of encryption.
After more research, it turns out that, according to experts, Windows Defender uses a hard-coded RC4 key to encrypt quarantine files.
A colleague of mine showed me this cool cuckoo script
Here is the relevant patron generated by their code, which I modified in this blog post:
# Copyright (C) 2015 KillerInstinct, Optiv, Inc. ([email protected] com)# Info is part of Cuckoo Sandbox - http://www.cuckoosandbox.org# See file 'docs / LICENSE' for copyright information.import operating systemImport structureImport hash libraryby binascii transport crc32def mse_ksa (): Hard-coded digital key obtained from mpengine.dll The key corresponds to [0x1E, 0x87, 0x78, 0x1B, 0x8D, 0xBA, 0xA8, 0x44, 0xCE, 0x69, 0x70, 0x2C, 0x0C, 0x78, 0xB7, 0x86, 0xA3, 0xF6, 0x23, 0xB7, 0x38, 0xF5, 0xED, 0xF9, 0xAF, 0x83, 0x53, 0x0F, 0xB3, 0xFC, 0x54, 0xFA, 0xA2, 0x1E, 0xB9, 0xCF, 0x13, 0x31, 0xFD, 0x0F, 0x0D, 0xA9, 0x54, 0xF6, 0x87, 0xCB, 0x9E, 0x18, 0x27, 0x96, 0x97, 0x90, 0x0E, 0x53, 0xFB, 0x31, 0x7C, 0x9C, 0xBC, 0xE4, 0x8E, 0x23, 0xD0, 0x53, 0x71, 0xEC, 0xC1, 0x59, 0x51, 0xB8, 0xF3, 0x64, 0x9D, 0x7C, 0xA3, 0x3E, 0xD6, 0x8D, 0xC9, 0x04, 0x7E, 0x82, 0xC9, 0xBA, 0xAD, 0x97, 0x99, 0xD0, 0xD4, 0x58, 0xCB, 0x84, 0x7C, 0xA9, 0xFF, 0xBE, 0x3C, 0x8A, 0x77, 0x52, 0x33, 0x55, 0x7D, 0xDE, 0x13, 0xA8, 0xB1, 0x40, 0x87, 0xCC, 0x1B, 0xC8, 0xF1, 0x0F, 0x6E, 0xCD, 0xD0, 0x83, 0xA9, 0x59, 0xCF, 0xF8, 0x4A, 0x9D, 0x1D, 0x50, 0x75, 0x5E, 0x3E, 0x19, 0x18, 0x18, 0xAF, 0x23, 0xE2, 0x29, 0x35, 0x58, 0x76, 0x6D, 0x2C, 0x07, 0xE2, 0x57, 0x12, 0xB2, 0xCA, 0x0B, 0x53, 0x5E, 0xD8, 0xF6, 0xC5, 0x6C, 0xE7, 0x3D, 0x24, 0xBD, 0xD0, 0x29, 0x17, 0x71, 0x86, 0x1A, 0x54, 0xB4, 0xC2, 0x85, 0xA9, 0xA3, 0xDB, 0x7A, 0xCA, 0x6D, 0x22, 0x4A, 0xEA, 0xCD, 0x62, 0x1D, 0xB9, 0xF2, 0xA2, 0x2E, 0xD1, 0xE9, 0xE1, 0x1D, 0x75, 0xBE, 0xD7, 0xDC, 0x0E, 0xCB, 0x0A, 0x8E, 0x68, 0xA2, 0xFF, 0x12, 0x63, 0x40, 0x8D, 0xC8, 0x08, 0xDF, 0xFD, 0x16, 0x4B, 0x11, 0x67, 0x74, 0xCD, 0x0B, 0x9B, 0x8D, 0x05, 0x41, 0x1E, 0xD6, 0x26, 0x2E, 0x42, 0x9B, 0xA4, 0x95, 0x67, 0x6B, 0x83, 0x98, 0xDB, 0x2F, 0x35, 0xD3, 0xC1, 0xB9, 0xCE, 0xD5, 0x26, 0x36, 0xF2, 0x76, 0x5E, 0x1A, 0x95, 0xCB, 0x7C, 0xA4, 0xC3, 0xDD, 0xAB, 0xDD, 0xBF, 0xF3, 0x82, 0x53 ] sbox = zone (256) j = 0 for i with range (256): j = (j + sbox [i] + key [i])% 256 tmp matches sbox [i] sbox [i] is equal to sbox [j] sbox [j] = tmp return sboxdef rc4_decrypt (sbox, data): excluding bytes array (len (data)) equals i = 0 j = 0 for k above the range (len (data)): i = (i + 1) for every hundred 256 j means (j + sbox [i])% 256 tmp matches sbox [i] sbox [i] is equal to sbox [j] sbox [j] = tmp val implies sbox [(sbox [i] + sbox [j]) percent zero 256] out [k] = val ^ data [k] restoredef mse_unquarantine (f): with an open (f, "rb") on the grounds that the quarfile: Data means byte array (Quarfile.read ()) fsize is len (data) fsize must be <12 or data ! = 0x0B alternately data ! = 0xad or data ! matches 0x00: return sbox = mse_ksa () outdata = rc4_decrypt (sbox, data) #impressions when it comes to opening ("unquar-with-meta.bin", "wb") like f: f.write (deprecated) # MSE stores metadata as the very first filename in a separate file, # So, because of this useful existing interface, we cannot restore the original name ResourceData file number only. Later we can enable the mapping of pairs # of personal records, match by name, then match data here # for later sending headerlen implies 0x28 + struct.unpack ("
the number sometimes appears twice in each of these files:
c: ProgramData Microsoft Windows Defender Definition Updates Backup mpengine.dllc: ProgramData Microsoft Windows Defender Definition Updates Default MpEngine.dllc: ProgramData Microsoft Windows Defender Definition Updates D45C13C3-59B3-4726-B82F-03461072F006 mpengine.dllc: Users All Users Microsoft Windows Defender Definition Updates Backup mpengine.dllc: Users All Users Microsoft Windows Defender Definition Updates Default MpEngine.dllc: Users All Users Microsoft Windows Defender Definition Updates D45C13C3-59B3-4726-B82F-03461072F006 mpengine.dllc: Windows WinSxS amd64_windows-defender-am-engine_31bf3856ad364e35_6.3.960.16384_none_efe9bba68a38095a MpEngine.dll
Looks like this:
I could dig a little deeper, but that's all for now. I hope this helps you.Speed up your computer today by downloading the software that will fix your PC errors.