diff --git a/monkey/infection_monkey/config.py b/monkey/infection_monkey/config.py
index 5e2c3ec21..5111bae48 100644
--- a/monkey/infection_monkey/config.py
+++ b/monkey/infection_monkey/config.py
@@ -197,8 +197,8 @@ class Configuration(object):
     # ransomware config
     ###########################
 
-    windows_dir = ""
-    linux_dir = ""
+    windows_dir_ransom = ""
+    linux_dir_ransom = ""
 
     def get_exploit_user_password_pairs(self):
         """
diff --git a/monkey/monkey_island/cc/services/config_schema/ransomware.py b/monkey/monkey_island/cc/services/config_schema/ransomware.py
index 83619b0b4..b5d250f00 100644
--- a/monkey/monkey_island/cc/services/config_schema/ransomware.py
+++ b/monkey/monkey_island/cc/services/config_schema/ransomware.py
@@ -1 +1,26 @@
-RANSOMWARE = {"linux_dir": "", "windows_dir": ""}
+RANSOMWARE = {
+    "title": "Ransomware",
+    "type": "object",
+    "properties": {
+        "directories": {
+            "title": "Directories to encrypt",
+            "type": "object",
+            "properties": {
+                "linux_dir_ransom": {
+                    "title": "Linux encryptable directory",
+                    "type": "string",
+                    "default": "",
+                    "description": "Files in the specified directory will be encrypted "
+                    "using bitflip to simulate ransomware.",
+                },
+                "windows_dir_ransom": {
+                    "title": "Windows encryptable directory",
+                    "type": "string",
+                    "default": "",
+                    "description": "Files in the specified directory will be encrypted "
+                    "using bitflip to simulate ransomware.",
+                },
+            },
+        }
+    },
+}