diff --git a/modules/signatures/windows/antivm_bochs_keys.py b/modules/signatures/windows/antivm_bochs_keys.py
index 02153d248..fd819438d 100644
--- a/modules/signatures/windows/antivm_bochs_keys.py
+++ b/modules/signatures/windows/antivm_bochs_keys.py
@@ -16,7 +16,7 @@
 from lib.cuckoo.common.abstracts import Signature
 
 class BochsDetectKeys(Signature):
-    name = "antivm_xen_keys"
+    name = "antivm_bochs_keys"
     description = "Detects Bochs through the presence of a registry key"
     severity = 3
     categories = ["anti-vm"]
diff --git a/modules/signatures/windows/apt_uroburos_file.py b/modules/signatures/windows/apt_uroburos_file.py
index 80ab5a313..2d08891e6 100644
--- a/modules/signatures/windows/apt_uroburos_file.py
+++ b/modules/signatures/windows/apt_uroburos_file.py
@@ -14,13 +14,15 @@ class UroburosFile(Signature):
     authors = ["RedSocks"]
     minimum = "2.0"
 
-    mutexes_re = [
-        ".*turla10",
-        ".*msdata\\\\.*",
-        ".*1396695624",
+    files_re = [
+        ".*\\\\drivers\\\\wo2ifsl.sys",
+        ".*\\\\drivers\\\\acpied.sys",
+        ".*\\\\drivers\\\\atmarpd.sys",
+        ".*\\\\temp\\\\msmsgsmon.exe",
+        ".*\\\\temp\\\\msdattst.ocx",
     ]
 
     def on_complete(self):
-        for mutex in self.mutexes_re:
-            if self.check_mutex(pattern=mutex, regex=True):
+        for indicator in self.files_re:
+            if self.check_file(pattern=indicator, regex=True):
                 return True
diff --git a/modules/signatures/windows/apt_uroburos_mutex.py b/modules/signatures/windows/apt_uroburos_mutex.py
index f3a3c9dce..e0a70a1f4 100644
--- a/modules/signatures/windows/apt_uroburos_mutex.py
+++ b/modules/signatures/windows/apt_uroburos_mutex.py
@@ -14,18 +14,13 @@ class UroburosMutexes(Signature):
     authors = ["RedSocks"]
     minimum = "2.0"
 
-    files_re = [
-        ".*\\\\drivers\\\\wo2ifsl.sys",
-        ".*\\\\drivers\\\\acpied.sys",
-        ".*\\\\drivers\\\\atmarpd.sys",
-        ".*\\\\temp\\\\msmsgsmon.exe",
-        ".*\\\\temp\\\\msdattst.ocx",
+    mutexes_re = [
+        ".*turla10",
+        ".*msdata\\\\.*",
+        ".*1396695624",
     ]
 
     def on_complete(self):
-        for indicator in self.files_re:
-            if self.check_mutex(pattern=indicator, regex=True):
-                return True
-
-            if self.check_file(pattern=indicator, regex=True):
-                return True
+        for mutex in self.mutexes_re:
+            if self.check_mutex(pattern=mutex, regex=True):
+                return True
\ No newline at end of file
diff --git a/modules/signatures/windows/bot_dirtjumper.py b/modules/signatures/windows/bot_dirtjumper.py
index ef49c0f37..58ce460b2 100644
--- a/modules/signatures/windows/bot_dirtjumper.py
+++ b/modules/signatures/windows/bot_dirtjumper.py
@@ -31,3 +31,5 @@ def on_complete(self):
             if http["method"] == "POST" and http["body"].startswith("k=") and \
                     http.get("user-agent", "") == self.user_agent:
                 self.mark_ioc("http", http)
+
+        return self.has_marks()
\ No newline at end of file
diff --git a/modules/signatures/windows/driver_load.py b/modules/signatures/windows/driver_load.py
index 282c1b7ec..296648d13 100644
--- a/modules/signatures/windows/driver_load.py
+++ b/modules/signatures/windows/driver_load.py
@@ -16,7 +16,7 @@
 from lib.cuckoo.common.abstracts import Signature
 
 class DriverLoad(Signature):
-    name = "shutdown_system"
+    name = "load_driver"
     description = "Loads a driver"
     severity = 3
     categories = ["stealth"]
diff --git a/modules/signatures/windows/trojan_pincav.py b/modules/signatures/windows/trojan_pincav.py
index f54d7c56f..da2268dc4 100644
--- a/modules/signatures/windows/trojan_pincav.py
+++ b/modules/signatures/windows/trojan_pincav.py
@@ -18,3 +18,11 @@ class TrojanLethic(Signature):
         ".*jK1dDfggS",
         ".*zBIYku2BMUdN9unB87sa2sa",
     ]
+
+    def on_complete(self):
+        for indicator in self.mutexes_re:
+            mutex = self.check_mutex(pattern=indicator, regex=True)
+            if mutex:
+                self.mark_ioc("mutex", mutex)
+
+        return self.has_marks()
\ No newline at end of file