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Anti-Virus Evasion through JavaScript Obfuscation

ID: cf3a422e-97c8-57c7-9e53-628ef45fbd11

STIX ID: report--cf3a422e-97c8-57c7-9e53-628ef45fbd11

Feed Name: TrustedSec blog

Threat Score
40/100

Date Published: 2025-03-19

Date Updated: 2026-05-01

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This brief report demonstrates a method to evade antivirus detection when delivering browser-side exploits by using Metasploit payloads and an online JavaScript packer (link provided). It highlights that Metasploit leaves detectable patterns such as %u encoding and shows a simple workflow to obfuscate payloads to bypass AV detection.

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