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Add signature for .tls section
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Add signature for threat local storage  PE section being present

https://attack.mitre.org/techniques/T1055/005/
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kevross33 authored Oct 4, 2024
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43 changes: 43 additions & 0 deletions modules/signatures/all/antianalysis_tls.py
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# Copyright (C) 2024 Kevin Ross
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

from lib.cuckoo.common.abstracts import Signature


class AntiAnalysisTLSSection(Signature):
name = "antianalysis_tls_section"
description = "Contains .tls (Thread Local Storage) section"
severity = 2
categories = ["anti-analysis"]
authors = ["Kevin Ross"]
minimum = "1.3"
ttps = ["T1055"] # MITRE v6
ttps += ["T1055"] # MITRE v6,7,8
ttps += ["T1055.005"] # MITRE v7,8
mbcs = ["B0002", "B0003", "E1055"]

def run(self):
ret = False

target = self.results.get("target", {})
if target.get("category") in ("file", "static") and target.get("file"):
pe = self.results["target"]["file"].get("pe", [])
if pe:
for section in pe["sections"]:
if section["name"].lower() == ".tls":
self.data.append({"thread local storage": section})
ret= True

return ret

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