Symantec Visual Cafe v30

Hunt Hypothesis

This YARA rule identifies the presence of Symantec Visual Cafe v30, a legacy Java development environment often retained in enterprise systems for legacy application maintenance or as a potential vector for supply chain attacks. Proactively hunting for this signature allows the SOC to map the footprint of outdated development tools within the environment, ensuring that known, low-severity software assets are inventoried and monitored for unexpected execution or network activity that could indicate compromise.

YARA Rule

rule Symantec_Visual_Cafe_v30: PEiD
{
    strings:
        $a = { E8 ?? ?? ?? ?? 5D 8B C5 2D ?? 50 81 ED 05 ?? ?? ?? 8B C5 2B 85 03 0F ?? ?? 89 85 03 0F ?? ?? 8B F0 03 B5 0B 0F ?? ?? 8B F8 03 BD 07 0F ?? ?? 83 7F 0C ?? 74 2B 56 57 8B 7F 10 03 F8 }
        $b = { 64 8B 05 ?? ?? ?? ?? 55 8B EC 6A FF 68 ?? ?? 40 ?? 68 ?? ?? 40 ?? 50 64 89 25 ?? ?? ?? ?? 83 EC 08 50 53 56 57 89 65 E8 C7 45 FC }
    condition:
        for any of ($*) : ( $ at pe.entry_point )

}

Deployment Notes

This YARA rule can be deployed in the following contexts:

• Microsoft Defender for Endpoint — Custom indicators / advanced hunting
• Email Gateway — Attachment scanning
• File Share Monitoring — Periodic scanning of shared drives
• YARA CLI — Manual threat hunting on endpoints

This rule contains 2 string patterns in its detection logic.

• Source Rule

False Positive Guidance

• Legacy Application Maintenance and Patching

  • Scenario: An IT operations team is performing scheduled maintenance on a critical, legacy line-of-business application (e.g., an internal inventory management system) that was originally developed using Symantec Visual Cafe. The maintenance involves recompiling specific Java applets or updating JAR files using the Visual Cafe IDE or its associated build tools, which may temporarily load the Symantec_Visual_Cafe_v30 signature or related DLLs into memory.
  • Filter/Exclusion: Exclude processes where the parent process is a known build tool (e.g., javac.exe, ant.exe, or maven.exe) or where the file path resides in a designated legacy application directory (e.g., C:\Apps\LegacyInventory\bin\).

• Software Inventory and Asset Management Scans

  • Scenario: Enterprise asset management tools like SCCM (System Center Configuration Manager) or Lanserv are performing a deep inventory scan to catalog installed software. These tools often read the registry or scan file systems to identify installed applications, which can trigger YARA rules that match against known IDE signatures or version strings associated with Symantec Visual Cafe, even if the IDE is not actively running.
  • Filter/Exclusion: Exclude detections where the parent process is a known inventory agent (e.g., ccmexec.exe, lanserv.exe, or wmiadap.exe) and the detection type is “File” rather than “Process.”

• Backup and Restore Operations

  • Scenario: During a scheduled backup or restore operation using tools like Veeam, Commvault, or Windows Server Backup, the backup agent reads or writes backup image files that contain snapshots of the Symantec Visual Cafe installation directory. If the YARA rule is applied to file content scanning during these operations, it