Merge pull request #393 from kevross33/patch-32

Add signature for query system memory amount (possible anti-vm)

modules/signatures/windows/antivm_memory.py

@@ -0,0 +1,39 @@
+# 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 AntiVMChecksAvailableMemory(Signature):
+    name = "antivm_checks_available_memory"
+    description = "Checks available memory"
+    severity = 1
+    categories = ["antivm"]
+    authors = ["Kevin Ross"]
+    minimum = "1.3"
+    evented = True
+    ttps = ["T1082"]  # MITRE v6,7,8
+
+    filter_apinames = set(["GlobalMemoryStatusEx"])
+
+    def __init__(self, *args, **kwargs):
+        Signature.__init__(self, *args, **kwargs)
+        self.ret = False
+
+    def on_call(self, call, process):
+        self.mark_call()
+        self.ret = True
+
+    def on_complete(self):
+        return self.ret