Petya adds worm capabilities – Windows Security(Note: We have published a follow- up blog entry on this ransomware attack. We have new findings from our continued investigation, as well as platform mitigation and protection information: Windows 1. Petya ransomware attack.)On June 2. Europe. We saw the first infections in Ukraine, where more than 1. We then observed infections in another 6.

Belgium, Brazil, Germany, Russia, and the United States. The new ransomware has worm capabilities, which allows it to move laterally across infected networks. Based on our investigation, this new ransomware shares similar codes and is a new variant of Ransom: Win.

Petya. This new strain of ransomware, however, is more sophisticated. To protect our customers, we released cloud- delivered protection updates and made updates to our signature definition packages shortly after. These updates were automatically delivered to all Microsoft free antimalware products, including Windows Defender Antivirus and Microsoft Security Essentials. You can download the latest version of these files manually at the Malware Protection Center. Windows Defender Advanced Threat Protection (Windows Defender ATP) automatically detects behaviors used by this new ransomware variant without any updates. Delivery and installation.

Initial infection appears to involve a software supply- chain threat involving the Ukrainian company M. E. Doc, which develops tax accounting software, MEDoc.

Although this vector was speculated at length by news media and security researchers—including Ukraine’s own Cyber Police—there was only circumstantial evidence for this vector. As we highlighted previously, software supply chain attacks are a recent dangerous trend with attackers, and it requires advanced defense. We observed telemetry showing the MEDoc software updater process (Ez. Vit. exe) executing a malicious command- line matching this exact attack pattern on Tuesday, June 2.

GMT. The execution chain leading to the ransomware installation is represented in the diagram below and essentially confirms that Ez. Vit. exe process from MEDoc, for unknown reasons, at some moment executed the following command- line: C: \\Windows\\system. The ransomware spreading functionality is composed of multiple methods responsible for: stealing credentials or re- using existing active sessionsusing file- shares to transfer the malicious file across machines on the same networkusing existing legitimate functionalities to execute the payload or abusing SMB vulnerabilities for unpatched machines. In the next sections, we discuss the details of each technique. Lateral movement using credential theft and impersonation. This ransomware drops a credential dumping tool (typically as a . Temp% folder) that shares code similarities with Mimikatz and comes in 3.

A special behavior is reserved for Domain Controllers or servers: this ransomware attempts to call Dhcp. Enum. Subnets() to enumerate DHCP subnets; for each subnet, it gathers all hosts/clients (using Dhcp. Enum. Subnet. Clients()) for scanning for tcp/1. If it gets a response, the malware attempts to copy a binary on the remote machine using regular file- transfer functionalities with the stolen credentials.

It then tries to execute remotely the malware using either PSEXEC or WMIC tools. The ransomware attempts to drop the legitimate psexec. If a credential name starts with .

Help your employees learn how to recognize and prevent phishing attacks by exploring examples of phishing emails. Docx is file format extension of Word document files (.docx) created using new Microsoft Office Word program from Microsoft. It replaces.doc format of file extension. ZIP is an archive file format that supports lossless data compression. A.ZIP file may contain one or more files or directories that may have been compressed.

It uses either a duplicate token of the current user (for existing connections), or a username/password combination (spreading through legit tools). Screenshot showing launch of malware on a remote machine using WMICLateral movement using Eternal. Blue and Eternal. Romance. The new ransomware can also spread using an exploit for the Server Message Block (SMB) vulnerability CVE- 2. Many Ivs Required Crack Wep With Kali more. Eternal. Blue), which was fixed in security update MS1. Wanna. Crypt to spread to out- of- date machines. In addition, this ransomware also uses a second exploit for CVE- 2.

How do I use JXL? Assuming your class is named MyClass with no package: Windows: javac -classpath jxl.jar MyClass.java java -classpath jxl.jar;. Microsoft Excel users will sometimes get a message that says their computer is out of memory, enough system resources to display completely, cannot complete this task. It means you should take action. After April 8, 2014, Microsoft will no longer provide security updates or technical support for Windows XP. Security updates patch. Download the latest from Windows, Windows Apps, Office, Xbox, Skype, Windows 10, Lumia phone, Edge & Internet Explorer, Dev Tools & more.

Eternal. Romance, and fixed by the same bulletin). We’ve seen this ransomware attempt to use these exploits by generating SMBv.

XOR 0x. CC encrypted) to trigger these vulnerabilities at the following address of the malware code: These two exploits were leaked by a group called Shadow Brokers. However, it is important to note that both of these vulnerabilities have been fixed by Microsoft in security update MS1. March 1. 4, 2. 01. Machines that are patched against these exploits (with security update MS1. SMBv. 1 are not affected by this particular spreading mechanism. Please refer to our previous blog for details on these exploits and how modern Windows 1. Encryption. This ransomware’s encryption behavior depends on the malware process privilege level and the processes found to be running on the machine.

It does this by employing a simple XOR- based hashing algorithm on the process names, and checks against the following hash values to use as a behavior exclusion: 0x. E or 0x. 65. 1B3. SMB exploitation.

E2. 14. B4. 4  – if a process with this hashed name is found, the ransomware trashes the first 1. Physical. Drive. 0, including the MBRThis ransomware then writes to the master boot record (MBR) and then sets up the system to reboot. It sets up scheduled tasks to shut down the machine after at least 1.

The exact time is random (Get. Tick. Count()). For example: schtasks /Create /SC once /TN . Instead, it overwrites the said files.

The AES key generated for encryption is per machine, per fixed drive, and gets exported and encrypted using the embedded 2. RSA public key of the attacker. Embedded RSA public key. Code exporting the AES 1. RSA public key during export. The unique key used for files encryption (AES) is added, in encrypted form, to the README. TXT file the threat writes under section .

The said file has the following text: This ransomware also clears the System, Setup, Security, Application event logs and deletes NTFS journal info. Detection and investigation with Windows Defender Advanced Threat Protection. Windows Defender Advanced Threat Protection (Windows Defender ATP) is a post- breach solution and offers by- design detections for this attack without need of any signature updates. Windows Defender ATP sensors constantly monitor and collect telemetry from the endpoints and offers machine- learning detections for common lateral movement techniques and tools used by this ransomware, including, for example, the execution of Ps. Exec. exe with different filename, and the creation of the perfc. UNC) paths. Today, without the need of additional updates, an infected machine may look like this: The second alert targets the distribution of the ransomware’s .

This event provides helpful information during investigation as it includes the User context that was used to move the file remotely. In Creators Update, we further hardened Windows 1. As another layer of protection, Windows 1. S only allows apps that come from the Windows Store to run. Windows 1. 0 S users are further protected from this threat. We recommend customers that have not yet installed security update MS1. Until you can apply the patch, we also recommend two possible workarounds to reduce the attack surface: As the threat targets ports 1.

You can also disable remote WMI and file sharing. These may have large impacts on the capability of your network, but may be suggested for a very short time period while you assess the impact and apply definition updates.

Aside from exploiting vulnerabilities, this threat can also spread across networks by stealing credentials, which it then uses to attempt to copy and execute a copy on remote machines. You can prevent credential theft by ensuring credential hygiene across the organization. Secure privileged access to prevent the spread of threats like Petya and to protect your organization’s assets. Use Credential Guard to protect domain credentials stored in the Windows Credential Store.

Windows Defender Antivirus detects this threat as Ransom: Win. Petya as of the 1. Windows Defender Antivirus uses cloud- based protection, helping to protect you from the latest threats.

For enterprises, use Device Guard to lock down devices and provide kernel- level virtualization- based security, allowing only trusted applications to run, effectively preventing malware from running. Monitor networks with Windows Defender Advanced Threat Protection, which alerts security operations teams about suspicious activities.

Download this playbook to see how you can leverage Windows Defender ATP to detect, investigate, and mitigate ransomware in networks: Windows Defender Advanced Threat Protection – Ransomware response playbook. Resources. MSRC blog: https: //blogs. Next- generation ransomware protection with Windows 1.

Creators Update: https: //blogs. Download English language security updates: Windows Server 2.

SP2 x. 64, Windows Server 2. SP2 x. 86,Windows XP SP2 x.

Windows XP SP3 x. Windows XP Embedded SP3 x. Windows 8 x. 86,Windows 8 x. Download localized language security updates: Windows Server 2. SP2 x. 64, Windows Server 2.

SP2 x. 86, Windows XP SP2 x. Windows XP SP3 x. Windows XP Embedded SP3 x. Windows 8 x. 86, Windows 8 x. MS1. 7- 0. 10 Security Update: https: //technet.

General information on ransomware: https: //www. Security for IT Pros: https: //technet. Indicators of Compromise.

Network defenders may search for the following indicators: File indicators. Command lines. In environments where command- line logging is available, the following command lines may be searched: Scheduled Reboot Task:  Petya schedules a reboot for a random time between 1. Create /SC once /TN.

SQL Server Central. Microsoft SQL Server tutorials, training & forum. In the first half of 2. VMWare hosts, significant improvements to performance and scalability, improved configurability of alerts, as well as dozens of smaller enhancements.

Since we’re about half way through 2.