Signature Detail
Short Name |
SHELLCODE:MSF:PEXALPHANUM-CTS |
|---|---|
Severity |
Medium |
Recommended |
Yes |
Recommended Action |
Drop |
Category |
SHELLCODE |
Keywords |
X86 PexAlphaNum Encoder Routine Over TCP-CTS |
Release Date |
2005/03/22 |
Update Number |
1213 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
SHELLCODE: X86 PexAlphaNum Encoder Routine Over TCP-CTS
This signature detects payloads being transferred over network that have been using x86 PexAlphaNum Encoder Routine. This may be an indication of someone trying to evade anti-virus/IPS solutions and possibly drop malicious code.
Extended Description
Use of the Metasploit PEX encoder to obfuscate executable code can enable an attacker to evade string-matching intrusion detection systems.
References