Rule History

SID: 2013148 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 3 • Jun 30, 2011, 12:00 PM

Message:

ET SHELLCODE JavaScript Redefinition of a HeapLib Object - Likely Malicious Heap Spray Attempt

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SHELLCODE JavaScript Redefinition of a HeapLib Object - Likely Malicious Heap Spray Attempt"; flow:established,to_client; content:"heap|2E|"; nocase; fast_pattern:only; pcre:"/var\x20[^\n\r]*\x3D[^\n\r]*heap\x2E/smi"; classtype:shellcode-detect; sid:2013148; rev:3; metadata:created_at 2011_06_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Jun 30, 2011, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 9, 2025, 9:35 PM

Filename:

rules/emerging-shellcode.rules