Correlation Engine Use Cases and Capabilities

Generic Signature-based and Analysis Heuristic and Rule-based Analysis Machine Learning Anomaly-based Analysis Threat Intelligence Cloud and SaaS Solutions Rule-based analysis

Correlation features and Use Cases

Generic Signature-based and Rule-Based Analysis

Automated log analysis and management accelerate threat detection. There are many cases where evidence of an attack can be found in the logs of your devices, systems and applications. UTMStack can be used to automatically aggregate and analyze log data.

 

  1. Log-based intrusion detection: Actively monitors and analyzes data from multiple log data points in real time.
  2. Brute-Force attack detection: Attempts to break user credentials by performing massive requests.
  3. Denial of services: Deny applications or systems availability by overflowing them with requests.
  4. File integrity monitoring: For both files and Windows registry settings in real time, detects changes to the system, and maintains a forensic copy of the data as it changes over time.
  5. Rootkit and malware detection: Process- and file-level analysis detects malicious applications and rootkits.
  6. Unauthorized attempts of privileged access usage. Suspicious activity and privilege escalation attempts.
  7. Security policy monitoring: UTMStack leverages SCAP. SCAP is a standardized compliance checking solution for enterprise-level infrastructure. It is a line of specifications maintained by the National Institute of Standards and Technology (NIST) with the purpose of maintaining enterprise systems security.
  8. Compliance auditing: Application- and system-level auditing ensures compliance with many common standards, such as PCI-DSS, CIS, HIPAA, and GLBA benchmarks.
  9. System inventory: Collects system information, such as installed software, hardware, utilization, network services, and listeners.

Heuristic and Rule-based Analysis

  1. Impossible travel: Logon attempts from uncommon locations or places where physical constrains wouldn’t allow the user to travel to on a reasonable time.
  2. Potentially Bad Traffic: Potentially Bad Traffic, traffic that is definitely out of the ordinary, and is potentially indicative of a compromised system
  3. Attempted Information Leak: Attempted information collection (reconnaissance), is a set of processes and techniques (Footprinting, Scanning & Enumeration) used to covertly discover and collect information about a target system. Information leaks or reconnaissance attacks that are classified as Attempted Information Leaks are not proof positive that an information gathering attempt has been successful.
  4. Attempted Denial of Service: This alert belongs to the group of rules of the category "attempted-dos". A Denial-of-Service (DoS) attack is an attack meant to shut down a machine or network, making it inaccessible to its intended users.
  5. Attempted User Privilege Gain: Monitors for attackers trying to elevate privileges to an unauthorized level. An attacker who has access to a user account can make use of various types of system vulnerabilities to elevate the privileges and access data for which is not authorized.
  6. Decode of an RPC Query: Decode of an RPC Query. Detects RPC related attacks, vulnerabilities, logging purposes, and protocol detection. Servers running with Portmapper are susceptible to a distributed reflected denial-of-service (DRDoS) attack. Remote Procedure Call (RPC) is a protocol that one program can use to request a service from a program located in another computer on a network without having to understand the network's details.
  7. Executable Code Detection: Executable code was detected. Detected traffic targeting vulnerabilities that are found in or delivered through executable files, regardless of platform. Remote shellcode is used when an attacker wants to target a vulnerable process running on another machine on a local network, or intranet. If successfully executed, the shellcode can provide the attacker access to the target machine across the network. A shellcode is a code that is injected into the memory of a vulnerable program in the form of a byte string.
  8. Suspicious String Detection: A suspicious string was detected. It checks whether an individual string is likely an attempt at confusing the reader (spoof detection), such as "pаypаl" spelled with Cyrillic 'а' characters.
  9. Suspicious Filename Detection: A suspicious filename was detected. These artifacts are typically associated with malware or intruder activity. The existence of winsrv.exe, svchost.exe, or svchost.dll in specific locations is typically malicious.
  1. System Call Detection: System calls are usually made when a process in user mode requires access to a resource. Then it requests the kernel to provide the resource via a system call. Most attacks that involve a file require at least two system calls. A first one to open the file and a second one to modify it.

Machine Learning Anomaly-based Analysis

The Machine learning module creates baselines for metrics such as Network traffic, user behavior, common applications and processes. This baselines allow the engine to define patterns of what can be considered “normal infrastructure and environment activity”.

When a certain process or user behavior falls outside the baseline, then a “rule” violation occurs and the Machine learning algorithm correlates it. If the result of the correlation throws a risk level higher than 1 (informative event), an alert is generated for further investigation.

Machine learning module currently monitors:

Threat Intelligence

Analyses all available security IP Feeds, mainly related to on-line attacks, on-line service abuse, malwares, botnets, command and control servers and other cybercrime activities.

To accomplish this, we include the following IP lists:

Fullbogons: includes IPs that should not be routable in the Internet. It includes bogons which lists private and reserved IPs, but it also includes IPs that are allocated to a local registry, but they are not currently assigned to anyone, ISP, corporation, or end user.

Spamhaus: drop and drop: DROP and EDROP are advisory "drop all traffic" lists, consisting of netblocks that are "hijacked" or leased by professional spam or cyber-crime operations (used for dissemination of malware, trojan downloaders, botnet controllers).

Dshield: summarizes the top 20 attacking class C (/24) subnets over the last three days.  The Internet Storm Center of SANS Institute, collects firewall and IDS logs from hundreds of thousands of computers around the globe

Malware lists - the Command and Control IPs: There are several malware lists that are very focused. They only track IPs that are actively used by specific malwares or trojans. We include most the Abuse.ch and Bambenek Consulting lists. Namely: feodo,sslbl, zeus_badips, bambenek_c2 which includes all Bambenek Consulting lists

 

Cloud and SaaS Solutions Rule-based analysis

All UTMStack modules apply to SaaS and Cloud environments. However, there are specialized rules for monitoring these environments.

  1. API management monitoring: Detects suspicious activity or attempts to get information from Cloud APIs
  2. Unauthorized Resources access: Attempts to access resources that are misconfigured or exposed to the Internet.
  3. SaaS and PaaS specific rules: Rules created to address specific known threats on SaaS applications and PaaS.