When encrypting a file, the ransomware generates a per-file random 128-byte number (using the CryptGenRandom API). This number is then cut down to a 256-bit AES key, and used for encrypting file data. The ransomware encrypts the file data in-place (using memory mapping), encrypting up to 15,728,640 bytes. The AES encryption key is then stored at the end of the file, together with user ID and original file name.
When looking at the installation status in the Avast Dashboard and a device shows up as Pending Reboot, please Reboot that device. If the status does not clear there likely exists the reboot.txt file that needs to be deleted. It can be somewhat pesky to find at times, however, so please do the following:
We found samples of AvosLocker ransomware that makes use of a legitimate driver file to disable antivirus solutions and detection evasion. While previous AvosLocker infections employ similar routines, this is the first sample we observed from the US with the capability to disable a defense solution using a legitimate Avast Anti-Rootkit Driver file (asWarPot.sys). In addition, the ransomware is also capable of scanning multiple endpoints for the Log4j vulnerability Log4shell using Nmap NSE script.
A closer look at the HTA file revealed that the mshta.exe downloads and executes the remotely hosted HTA file. The HTA executed an obfuscated PowerShell script that contains a shellcode, capable of connecting back to the C&C server to execute arbitrary commands.
We found an Avast anti-rootkit driver installed as service 'asWarPot.sys' using the command sc.exe create aswSP_ArPot2 binPath= C:\windows\aswArPot.sys type= kernel. It installs the driver file in preparation for disabling the running antivirus product. We noted the unusual use of cmd.exe for execution of the file.
While AvosLocker has been documented for its abuse of AnyDesk for lateral movement as its preferred application, we note that other remote access applications can also be abused to replace it. We think the same can be said for the software deployment tool, wherein the malicious actors can subsequently decide to replace and abuse it with other commercially available ones. In addition, aside from its availability, the decision to choose the specific rootkit driver file is for its capability to execute in kernel mode (therefore operating at a high privilege).
Unfortunately there isn't any standard password database format. Every passwordmanager uses its own file format. Anyway, almost all support exporting to CSV or XMLfiles. This sounds good at first glance, but CSV and XML files aren't specialized passworddatabase formats, they only specify a low-level layout of the stored data (for CSV: data fieldsare separated by commas; for XML: hierarchical form using tags). These formats do notspecify the high-level arrangement of the data (for CSV: order/meaning of the fields; forXML: tag names and structure). Because of this, many users are confused when application #1exports data to CSV/XML and application #2 can't read the CSV/XML file, although it claimsthat it can read those files.
This help page details the expected CSV and XML file formats. Knowing the formats whichKeePass expects, you can reformat CSV and XML files exported by other password managers tomatch the KeePass formats. CSV files can be reformatted using e.g. LibreOffice Calc(see below).XML files can be reformatted using an XML editor.
KeePass can import many password database formats directly (see top of this page).Additionally, there are specialized KeePassplugins availablefor importing more formats (like AnyPassword CSV, Oubliette files, PINs TXT, ZSafe files,and many more). Using these plugins, you don't need to manually reformat the output ofother password managers; you can directly import the exported files.
The 'Account' field in a CSV file corresponds to the title field ofa KeePass entry, 'Login Name' corresponds to the user name,'Web Site' corresponds to the URL, and 'Comments' correspond to the notes.The CSV field names differ from the KeePass entry field namesin order to ensure the compatibility with certain other applications.
For a detailed example, download this file:FileSample_CSV.zip.This file is zipped only in order to ensure correct encoding (if not zipped, browsers ordownload managers could automatically convert the file to a different encoding). When importinga CSV file, it must not be zipped!
Microsoft Excel by default does not enclose fields in quotes (").It is recommended that you useLibreOffice Calcto create a correct CSV file (see below), or use the Generic CSV Importerof KeePass 2.x (import your CSV file into KeePass 2.x, then export the data to aKeePass 1.x KDB file), or fix the CSV file by manually adding the quotes using a text editor.
If you want to transfer data between KeePass 1.x databases, you mustnot change the default export options of KeePass.Do not export additional fields or uncheck any options, otherwiseKeePass will not be able to re-import the CSV file, because it does not comply to thespecification above any more.
You can download a detailed XML sample file here:FileSample_XML.zip.This file is zipped only in order to ensure correct encoding (if not zipped, browsers ordownload managers could automatically convert the file to a different encoding). When importinga XML file, it of course must not be zipped!
KeePass 2.x features a generic CSV importer.This tool can import almost all CSV formats. The CSVfiles are loaded and you can manually specify the encoding / character set, assign columnsto data fields, and specify how the low-level structure looks like (usage of quotes, etc.).
CodeWallet is a password manager that supports different card types (fields).KeePass cannot know which of the CodeWallet fields correspond to the KeePassstandard fields (title, user name, ...), because they don't have fixed names (language-dependent,user-customizable, ...).Therefore all fields from the CodeWallet file are imported into custom string fieldsof KeePass entries. After importing the file, you can move some of the stringsto the correct standard fields (by clicking the 'Move' button on the second tab pageof the entries dialog.
Warning! It is possible that the transfer fails and that KeePass accidentlyoverwrites your existing passwords in Steganos Password Manager. Therefore, back up yourSEF file before starting the import! In any case you should restore your passwords byrestoring the backup you just created after the import process! Even if you thinkKeePass hasn't changed anything, restore from the backup!
Unfortunately Steganos Password Manager (SPM) lacks any form of export functionality. As theSEF file format (in which the data is stored) is proprietary and no specificationis available, KeePass needs to try to get all the data out of the windows ofSPM.
Properties of the parent groups (icons, notes, auto-type settings, etc.)are exported, if the selected file format supports them.When importing a file, the properties of the groups in the current databasemay be overwritten by the properties of the groups in the file(depending on the import mode and the last modification times).
A: To import items directly to collections, format your import as a Bitwarden .csv (for more information, see Condition a Bitwarden .csv or .json) and specify collections to import each item to within the file.
The MSDN and VLSC updated ISOs do not contain the complete set of fixes that are offered from Windows Update. Therefore, Windows Update and Windows Server Update Services (WSUS) will offer update 2919355 again to the computers that are deployed by using the images in these ISOs. This is expected and does not trigger the full reinstallation of the Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update, but only one smaller component of it. The rest of the update will not be downloaded or reinstalled.
119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
File hash information The following table lists the thumbprints of the certificates that are used to sign the updates (.msu). Verify the certificate thumbprint in this Microsoft Knowledge Base article against the certificate thumbprint indicated on the update that you download.
We analyzed the Avast ransomware and found that it encrypts files, appends its extension (".avast") to filenames, and drops the "RECOVERY INFORMATION.txt" file containing a ransom note. An example of how this ransomware renames files: it changes "1.jpg" to "1.jpg.avast", "2.png" to "2.png.avast", and so forth.
Avast's ransom note informs victims that files cannot be decrypted without the right tool. It instructs to send the provided personal ID to firstname.lastname@example.org or email@example.com to get further instructions (payment information). It also mentions that victims can have a few files decrypted for free.
Usually, files cannot be decrypted without tools purchased from the attackers. Free data recovery is possible when victims have a data backup or a working third-party decryption tool downloaded from the Internet. A ransom should not be paid. Paying it does not guarantee that cybercriminals will cooperate (send a decryption tool).
Another important detail about ransomware is that it can spread itself over a local network and (or) encrypt files stored after the attack. Therefore, it is strongly recommended to eliminate ransomware from infected computers as soon as possible.
Cybercriminals use ransomware to encrypt files and force victims to pay for their decryption. Typically, victims can avoid data and monetary loss if they have their files backed up (have a copy of files stored on a remote server, unplugged storage device, or somewhere else). 781b155fdc