diff --git a/tests/model_registry/negative_tests/conftest.py b/tests/model_registry/negative_tests/conftest.py
index face5bfa2..65a352715 100644
--- a/tests/model_registry/negative_tests/conftest.py
+++ b/tests/model_registry/negative_tests/conftest.py
@@ -25,6 +25,7 @@
 from utilities.constants import MODEL_REGISTRY_CUSTOM_NAMESPACE
 from utilities.general import wait_for_pods_by_labels
 from utilities.infra import create_ns
+from tests.model_registry.negative_tests.utils import execute_mysql_command, create_mysql_credentials_file
 
 DB_RESOURCES_NAME_NEGATIVE = "db-model-registry-negative"
 
@@ -139,28 +140,15 @@ def model_registry_db_deployment_negative_test(
 @pytest.fixture()
 def set_mr_db_dirty(model_registry_db_instance_pod: Pod) -> int:
     """Set the model registry database dirty and return the latest migration version"""
-    output = model_registry_db_instance_pod.execute(
-        command=[
-            "mysql",
-            "-u",
-            MODEL_REGISTRY_DB_SECRET_STR_DATA["database-user"],
-            f"-p{MODEL_REGISTRY_DB_SECRET_STR_DATA['database-password']}",
-            "-e",
-            "SELECT version FROM schema_migrations ORDER BY version DESC LIMIT 1;",
-            MODEL_REGISTRY_DB_SECRET_STR_DATA["database-name"],
-        ]
+    create_mysql_credentials_file(model_registry_db_instance_pod=model_registry_db_instance_pod)
+    output = execute_mysql_command(
+        sql_query="SELECT version FROM schema_migrations ORDER BY version DESC LIMIT 1;",
+        model_registry_db_instance_pod=model_registry_db_instance_pod,
     )
     latest_migration_version = int(output.strip().split()[1])
-    model_registry_db_instance_pod.execute(
-        command=[
-            "mysql",
-            "-u",
-            MODEL_REGISTRY_DB_SECRET_STR_DATA["database-user"],
-            f"-p{MODEL_REGISTRY_DB_SECRET_STR_DATA['database-password']}",
-            "-e",
-            f"UPDATE schema_migrations SET dirty = 1 WHERE version = {latest_migration_version};",
-            MODEL_REGISTRY_DB_SECRET_STR_DATA["database-name"],
-        ]
+    execute_mysql_command(
+        sql_query=f"UPDATE schema_migrations SET dirty = 1 WHERE version = {latest_migration_version};",
+        model_registry_db_instance_pod=model_registry_db_instance_pod,
     )
     return latest_migration_version
 
diff --git a/tests/model_registry/negative_tests/utils.py b/tests/model_registry/negative_tests/utils.py
new file mode 100644
index 000000000..dfcfd786e
--- /dev/null
+++ b/tests/model_registry/negative_tests/utils.py
@@ -0,0 +1,33 @@
+from ocp_resources.pod import Pod
+from tests.model_registry.constants import MODEL_REGISTRY_DB_SECRET_STR_DATA
+import base64
+
+
+def create_mysql_credentials_file(model_registry_db_instance_pod: Pod) -> None:
+    """
+    Setup MySQL configuration file with credentials.
+    """
+    credentials_file_content = f"""[client]
+    user={MODEL_REGISTRY_DB_SECRET_STR_DATA["database-user"]}
+    password={MODEL_REGISTRY_DB_SECRET_STR_DATA["database-password"]}
+    """
+    b64_content = base64.b64encode(credentials_file_content.encode("utf-8")).decode("utf-8")
+
+    model_registry_db_instance_pod.execute(
+        command=["bash", "-c", f"echo '{b64_content}' | base64 --decode > /tmp/.my.cnf"]
+    )
+
+
+def execute_mysql_command(sql_query: str, model_registry_db_instance_pod: Pod) -> str:
+    """
+    Execute a MySQL command on the model registry database instance pod.
+    """
+    return model_registry_db_instance_pod.execute(
+        command=[
+            "mysql",
+            "--defaults-file=/tmp/.my.cnf",
+            "-e",
+            sql_query,
+            MODEL_REGISTRY_DB_SECRET_STR_DATA["database-name"],
+        ]
+    )