Create file for suspicious process termination

modules/signatures/terminate_process.py

@@ -0,0 +1,65 @@
+# Copyright (C) 2016 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 TerminateProcess(Signature):
+    name = "terminate_process"
+    description = "A process was terminated in a suspicious manner"
+    severity = 2
+    categories = ["generic"]
+    authors = ["Kevin Ross"]
+    minimum = "1.3"
+    evented = True
+
+    def __init__(self, *args, **kwargs):
+        Signature.__init__(self, *args, **kwargs)
+        self.cmdline = []
+        self.terminated = []
+
+    filter_apinames = set(["CreateProcessInternalW","ShellExecuteExW","NtTerminateProcess"])
+
+    def on_call(self, call, process):
+        if call["api"] == "NtTerminateProcess":
+            handle = self.get_argument(call, "ProcessHandle")
+            if handle != "0x00000000" and handle != "0xffffffff":
+                procname = self.get_name_from_pid(handle)
+                if procname not in self.terminated:
+                    self.terminated.append(procname)
+        elif call["api"] == "CreateProcessInternalW":
+            cmdline = self.get_argument(call, "CommandLine").lower()
+            if "taskkill" in cmdline:
+                self.cmdline.append(cmdline)
+        elif call["api"] == "ShellExecuteExW":
+            filepath = self.get_argument(call, "FilePath").lower()
+            params = self.get_argument(call, "Parameters").lower()
+            cmdline = filepath + " " + params
+            if "taskkill" in cmdline:
+                self.cmdline.append(cmdline)
+
+    def on_complete(self):
+        ret = False
+
+        if len(self.terminated) > 0:
+            for terminated in self.terminated:
+                self.data.append({"terminated_another_process" : terminated})
+                ret = True
+
+        if len(self.cmdline) > 0:
+            for cmdline in self.cmdline:
+                self.data.append({"termination_cmdline" : cmdline})
+                ret = True
+
+        return ret