Virus Scan Engine 32/64-bit

At the heart of all Trend Micro products lies the scan engine, which was originally developed in response to early file-based viruses. The scan engine today is exceptionally sophisticated and capable of detecting different types of viruses and malware. The scan engine also detects controlled viruses that are developed and used for research.

Rather than scanning every byte of every file, the engine and pattern file work together to identify the following:

Smart Scan Pattern

Not distributed to OfficeScan agents. This pattern stays in theOfficeScan server and is used when responding to scan queries received from OfficeScan agents.

When in smart scan mode, OfficeScan agents use two lightweight patterns that work together to provide the same protection provided by conventional anti-malware and anti-spyware patterns.

The Smart Scan Pattern contains majority of the pattern definitions. The Smart Scan Agent Pattern contains all the other pattern definitions not found on the Smart Scan Pattern.

The OfficeScan agent scans for security threats using the Smart Scan Agent Pattern. OfficeScan agents that cannot determine the risk of the file during the scan verify the risk by sending a scan query to the Scan Server, a service hosted on the OfficeScan server. The Scan Server verifies the risk using the Smart Scan Pattern. The OfficeScan agent "caches" the scan query result provided by the Scan Server to improve the scan performance.

Smart Scan Agent Pattern

OfficeScan agents using smart scan

Virus Pattern

OfficeScan agents using conventional scan

The Virus Pattern contains information that helps OfficeScan agents identify the latest virus/malware and mixed threat attacks. Trend Micro creates and releases new versions of the Virus Pattern several times a week, and any time after the discovery of a particularly damaging virus/malware.

IntelliTrap Exception Pattern

The IntelliTrap Exception Pattern contains a list of "approved" compression files.

IntelliTrap Pattern

The IntelliTrap Pattern detects real-time compression files packed as executable files.

For details, see IntelliTrap.

Memory Inspection Pattern

This technology provides enhanced virus scanning for polymorphic and mutation viruses, and augments virus-pattern-based scans by emulating file execution. The results are then analyzed in a controlled environment for evidence of malicious intent with little impact on system performance.

Damage Cleanup Engine 32/64-bit

The Damage Cleanup Engine scans for and removes Trojans and Trojan processes.

Damage Cleanup Template

The Damage Cleanup Template is used by the Damage Cleanup Engine to identify Trojan files and processes so the engine can eliminate them.

Spyware/Grayware Scan Engine 32/64-bit

The Spyware Scan Engine scans for and performs the appropriate scan action on spyware/grayware.

Spyware/Grayware Pattern

The Spyware Pattern identifies spyware/grayware in files and programs, modules in memory, Windows registry and URL shortcuts.

Spyware Active-monitoring Pattern

OfficeScan agents using conventional scan

The Spyware Active-monitoring Pattern is used for real-time spyware/grayware scanning. Only conventional scan agents use this pattern.

URL Filtering Engine

The URL Filtering Engine facilitates communication between OfficeScan and the Trend Micro URL Filtering Service. The URL Filtering Service is a system that rates URLs and provides rating information to OfficeScan.

Behavior Monitoring Detection Pattern 32/64-bit

This pattern contains the rules for detecting suspicious threat behavior.

Behavior Monitoring Core Driver 32/64-bit

This kernel mode driver monitors system events and passes them to the Behavior Monitoring Core Service for policy enforcement.

Behavior Monitoring Core Service 32/64-bit

This user mode service has the following functions:

Behavior Monitoring Configuration Pattern

The Behavior Monitoring Driver uses this pattern to identify normal system events and exclude them from policy enforcement.

Policy Enforcement Pattern

The Behavior Monitoring Core Service checks system events against the policies in this pattern.

Digital Signature Pattern

This pattern contains a list of valid digital signatures that are used by the Behavior Monitoring Core Service to determine whether a program responsible for a system event is safe.

Memory Scan Trigger Pattern (32/64-bit)

The Memory Scan Trigger service executes other scan engines when it detects the process in memory is unpacked.

Virus Cleanup Engine

The Virus Cleanup Engine scans for and removes Trojans and Trojan processes. This engine supports 32-bit and 64-bit platforms.

Virus Cleanup Template

The Virus Cleanup Template is used by the Virus Cleanup Engine to identify Trojan files and processes so the engine can eliminate them.

Early Boot Clean Driver

The Trend Micro Early Boot Clean Driver loads before the operating system drivers which enables the detection and blocking of boot-type rootkits. After the OfficeScan agent loads, Trend Micro Early Boot Clean Driver calls Damage Cleanup Services to clean the rootkit.

Firewall Driver

The Common Firewall Driver is used with the Common Firewall Pattern to scan agent computers for network viruses. This driver supports 32-bit and 64-bit platforms.

Firewall Pattern

Like the Virus Pattern, the Firewall Pattern helps agents identify virus signatures, unique patterns of bits and bytes that signal the presence of a network virus.