Land attack virus

The flight test was successfully completed in and the armed forces began to operate around At present, the Dongfeng missile has been developed to the second generation of improved DongfengA cruise missiles, deriving multiple versions of land-based, air-launched and anti-ship navigations. According to Western media speculation, DF missile size and weight are greater than the US Tomahawk missile, about 8.

It is reported to have a cruise altitude 30 to 50 meters, a small turbofan engine, cruise speed of 0. Mach, kg warhead, the effective range of km or more. The end-point accuracy CEP of target of km is less than 3 meters. In April , the online exposure of a picture of the type of cruise missile launch showed that the missile body has a "DF" message, that is, Dongfeng Dongfeng 10's original design was due to the Navy.

Due to the Dongfeng's heavy weight up to 2 tons and a diamters of mm or more, it is said to be impossible to get into the torpedo tubes of a submarine. The diameter of the torpedo tubes of China's Navy's nuclear submarines and conventional submarines is only mm. The Long SwordA is a land-based mobile launch cruise missile developed on the basis of the Changjian land-based cruise missile. It can dynamically identify targets, super low-altitude hidden strikes, and multi-angle continuous attacks.

On September 3, , ChangjianA was first publicized as a third-party team of conventional missiles for strategic strike troops in the 70th anniversary of the victory of the Chinese People's War of Resistance Against Japan and the World Anti-Fascist War.

The missile features a cylindrical body with two retractable wings, four foldable tailfins as well as a concealed belly engine inlet. It is stored and transported inside box-shaped launchers, with three missiles carried on each Wanshan WS 8 x 8 TEL vehicle. The missile features a new 8 x 8 TEL vehicle and slight different arrangement in its box launchers. The SwordA is a land-based mobile launch cruise missile developed on the basis of the Sword ground-based cruise missiles, which can dynamically identify targets, low signature hidden covert and multi-angle continuous attacks.

On September 3, , SwordA was first announced publicly as a strategic third-party team to combat conventional missiles of the armed forces during the commemoration of the 70th anniversary of the victory of the Chinese People's War of Resistance Against Japanese Aggression and the World Anti-Fascist War.

The A in the DFA indicated that this cruise missile has undergone a lot of improvements, almost a new type of missile. The first is that a great change had taken place in the missile carrier, using a new generation of 4-axis monobloc chassis; followed by the firing box from the font-shaped arrangement into a lined arrangement, each firing box can be individually hoisted or fired. Third, fundamental changes had taken place in guidance technology. The new DongfengA cruise missile is guided by a combination of inertial guidance, satellite guidance, digital scene matching zone correlator for end guidance and infrared imaging guidance.

Photos of China's supersonic anti-ship missile "YJ" and long-range anti-ship cruise missile "YJ" were revealed online in February Li Li, a military expert, during the China Central Television CCTV interview, said both missiles can cause a severe damage to enemy's large surface combat vessels.

The "YJ" is not a supersonic missile but has a long attack range. Li said that if the range of the "YJ" can reach as long as kilometers, it will strike aircraft carrier and large surface targets in a long distance that beyond visual range and the enemy can hardly response properly.

The YJ is a long-range anti-ship cruise missile designed to be delivered by H-6 bombers. It is a derivative of the CJ air-launched cruise missile similar to the United States Tomahawk land attack cruise missile. The YJ cruises at very high subsonic speed. According to the Chinese press the YJ features a range of at least kilometers, between the YJ with kilometers range and the DFD with 1, kilometers.

The anti-ship missile is intended to engage the United States Navy's aircraft carrier battle groups at long ranges in the Pacific. He said that the huge spike in infections will likely strain hospitals but added that the IHME models incorporate data from South Africa and the United Kingdom, where omicron cases have so far been associated with milder disease.

As such, Murray said the fraction of infections that need hospitalization are projected to be 90 to 96 percent lower than with the delta variant. IE 11 is not supported. For an optimal experience visit our site on another browser. NBC News Logo. Covid Politics U. News World Opinion Business. Share this —. Search Search. Follow NBC News. By Erika Edwards and Denise Chow. Other similar tools, such as cmstp. Of course, the execution is not limited to scripts; the tools may allow the execution of DLLs and executables, even from remote locations in some cases.

By living off the land, fileless malware can cover its tracks: no files are available to the antivirus for scanning and only legitimate processes are executed. Windows Defender ATP overcomes this challenge by monitoring the behavior of the system for anomalies or known patterns of malicious usage of legitimate tools.

This, too, is considered a fileless attack. Given that attacks involve several stages for functionalities like execution, persistence, information theft, lateral movement, communication with command-and-control, etc.

We can classify fileless threats by their entry point i. From this classification, we can glean three big types of fileless threats based on how much fingerprint they may leave on infected machines. Having described the broad categories, we can now dig into the details and provide a breakdown of the infection hosts. This comprehensive classification covers the panorama of what is usually referred to as fileless malware.

It drives our efforts to research and develop new protection features that neutralize classes of attacks and ensure malware does not get the upper hand in the arms race. For a detailed description and examples of these categories, visit this comprehensive page on fileless threats. File-based inspection is ineffective against fileless malware.

Antivirus capabilities in Windows Defender ATP use defensive layers based on dynamic behavior and integrate with other Windows technologies to detect and terminate threat activity at runtime.

In a previous blog post we described some of the offensive and defensive technologies related to fileless attacks and how these solutions help protect our customers. Evolving from the file-centric scanning model, Windows Defender ATP uses a generic and more powerful behavior-centric detection model to neutralize generic malicious behaviors and thus take out entire classes of attack.

Antimalware Scan Interface AMSI is an open framework that applications can use to request antivirus scans of any data. In addition, Office client applications integrates with AMSI , enabling antivirus and other security solutions to scan macros and other scripts at runtime to check for malicious behavior. In the example above, we have shown how AMSI can be a powerful weapon to fight fileless malware. It has led to the disruption of malware campaigns like Nemucod.

During a recent investigation, we stumbled upon some malicious scripts that were heavily obfuscated. We collected three samples that were evading static signatures and are a mixture of barely recognizable script code and binary junk data. However, after manual de-obfuscation, it turned out that these samples decode and execute the same. The payload does not have any obfuscation and is very easy to detect, but it never touches the disk and so could evade file-based detection.

However, the scripting engine is capable of intercepting the attempt to execute the decoded payload and ensuring that the payload is passed to the installed antivirus via AMSI for inspection. Instead of writing a generic detection algorithm based on the obfuscation patterns in the samples, we trained an ML model on this behavior log and wrote heuristic detection to catch the decrypted scripts inspected via AMSI.

The results proved effective, catching new and unknown variants, protecting almost two thousand machines in a span of two months. Traditional detection would not have been as effective.

The behavior monitoring engine filters suspicious API calls. Detection algorithms can then match dynamic behaviors that use particular sequences of APIs with specific parameters and block processes that expose known malicious behaviors. Behavior monitoring is useful not only for fileless malware, but also for traditional malware where the same malicious code base gets continuously repacked, encrypted, or obfuscated. Behavior monitoring proved effective against WannaCry, which was distributed through the DoublePulsar backdoor and can be categorized as a very dangerous Type I fileless malware.

While several variants of the WannaCry binaries were released in attack waves, the behavior of the ransomware remained the same, allowing antivirus capabilities in Windows Defender ATP to block new versions of the ransomware. Behavior monitoring is particularly useful against fileless attacks that live off the land.

The PowerShell reverse TCP payload from Meterpreter is an example: it can be run completely on a command line and can provide a PowerShell session to a remote attacker. Behavior monitoring detects and blocks numerous attacks like this on a daily basis. Beyond looking at events by process, behavior monitoring in Windows Defender ATP can also aggregate events across multiple processes, even if they are sparsely connected via techniques like code injection from one process to another i.

Moreover, it can persist and orchestrate sharing of security signals across Windows Defender ATP components e. Here is another example where multi process behavior monitoring in action, Pyordono. A is a detection based on multi-process events and is aimed at blocking scripting engines JavaScript, VBScript, Office macros that try to execute cmd. Windows Defender ATP telemetry shows this detection algorithm protecting users from several campaigns.

Recently, we saw a sudden increase in Pyordono. A encounters, reaching levels way above the average. We investigated this anomaly and uncovered a widespread campaign that used malicious Excel documents and targeted users in Italy from September 8 to The document contains a malicious macro and uses social engineering to lure potential victims into running the malicious code. Note: We have recently integrated Office clients apps with AMSI , enabling antivirus solutions to scan macros at runtime to check for malicious content.

The macro makes use of obfuscation to execute a cmd command, which is also obfuscated. The cmd command executes a PowerShell script that in turn downloads additional data and delivers the payload, infostealing Ursnif.

We recently reported a small-scale Ursnif campaign that targeted small businesses in specific US cities. Through multi-process behavior monitoring, Windows Defender ATP detected and blocked the new campaign targeting users in Italy using a generic detection algorithm without prior knowledge of the malware. Antivirus capabilities in Windows Defender ATP also employ memory scanning to detect the presence of malicious code in the memory of a running process.

Even if malware can run without the use of a physical file, it does need to reside in memory in order to operate and is therefore detectable by means of memory scanning. An example is the GandCrab ransomware, which was reported to have become fileless.