Диспетчер управления службами
Adversaries may execute a binary, command, or script via a method that interacts with Windows services, such as the Service Control Manager. This can be done by either creating a new service or modifying an existing service. This technique is the execution used in conjunction with New Service and Modify Existing Service during service persistence or privilege escalation.
Контрмеры |
|
| Контрмера | Описание |
|---|---|
| Privileged Account Management |
Manage the creation, modification, use, and permissions associated to privileged accounts, including SYSTEM and root. |
| Restrict File and Directory Permissions |
Restrict access by setting directory and file permissions that are not specific to users or privileged accounts. |
| Service Execution Mitigation |
Ensure that permissions disallow services that run at a higher permissions level from being created or interacted with by a user with a lower permission level. Also ensure that high permission level service binaries cannot be replaced or modified by users with a lower permission level. Identify unnecessary system utilities or potentially malicious software that may be used to interact with Windows services, and audit and/or block them by using whitelisting (Citation: Beechey 2010) tools, like AppLocker, (Citation: Windows Commands JPCERT) (Citation: NSA MS AppLocker) or Software Restriction Policies (Citation: Corio 2008) where appropriate. (Citation: TechNet Applocker vs SRP) |
Обнаружение
Changes to service Registry entries and command-line invocation of tools capable of modifying services that do not correlate with known software, patch cycles, etc., may be suspicious. If a service is used only to execute a binary or script and not to persist, then it will likely be changed back to its original form shortly after the service is restarted so the service is not left broken, as is the case with the common administrator tool PsExec.
Связанные риски
Каталоги
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