Abstract: Methods and systems are provided for automatically generating malware definitions and using generated malware definitions. One example method generally includes receiving information associated with a malicious application and extracting malware strings from the malicious application. The method further includes filtering the malware strings using a set of safe strings to produce filtered strings and scoring the filtered strings to produce string scores by evaluating words of the filtered strings based on word statistics of a set of known malicious words. The method further includes selecting a set of candidate strings from the filtered strings based on the string scores and generating a malware definition for the malicious application based on the set of candidate strings. The method also includes performing one or more security actions to protect against the malicious application, using the malware definition.

Abstract: Application identification and control in a network device. In one embodiment, a method may include establishing, at a network device, a Virtual Private Network (VPN) tunnel through which all Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) traffic sent from or received at the network device is routed. The method may also include monitoring, at the network device, all TCP and UDP traffic sent from or received at the network device through the VPN tunnel. The method may further include extracting, at the network device, payload data from the monitored TCP and UDP traffic. The method may also include analyzing the extracted payload data to identify applications executing on the network device that sent or received the monitored TCP and UDP traffic. The method may further include taking, at the network device, a security action on the network device based on the identified applications.

Abstract: The disclosed computer-implemented method for detecting malware using static analysis may include (i) identifying an executable file to subject to analysis for malware, (ii) retrieving an association between a known malicious behavior and an exploitable method being invoked, wherein the association specifies that a contextual method precedes the exploitable method in an invocation path and that the exploitable method is invoked with a set of predetermined parameters, (iii) detecting, within the executable file, an invocation of the exploitable method, (iv) determining that the invocation of the exploitable method within the executable file occurs in a detected invocation path in which the contextual method precedes the exploitable method and that the invocation of the exploitable method includes a set of invoking parameters that matches the set of predetermined parameters, and (v) classifying the executable file as containing malware.

Abstract: Application identification and control in a network device. In one embodiment, a method may include establishing, at a network device, a Virtual Private Network (VPN) tunnel through which all Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) traffic sent from or received at the network device is routed. The method may also include monitoring, at the network device, all TCP and UDP traffic sent from or received at the network device through the VPN tunnel. The method may further include extracting, at the network device, payload data from the monitored TCP and UDP traffic. The method may also include analyzing the extracted payload data to identify applications executing on the network device that sent or received the monitored TCP and UDP traffic. The method may further include taking, at the network device, a security action on the network device based on the identified applications.