Query: intelligence brief on T1671
Matching passage: T1671 Cloud Application Integration. Tactics: persistence. Description: Adversaries may achieve persistence by leveraging OAuth application integrations in a software-as-a-service environment. Adversaries may create a custom application, add a legitimate application into the environment, or even co-opt an existing integration to achieve malicious ends.(Citation: Push Security SaaS Persistence 2022)(Citation: SaaS Attacks GitHub Evil Twin Integrations) OAuth is an open standard that allows users to authorize applications to access their information on their behalf. In a SaaS environment such as Microsoft 365 or Google Workspace, users may integrate applications to improve their workflow and achieve tasks. Leveraging application integrations may allow adversaries to persist in an environment – for example, by granting consent to an application from a high-privileged adversary-controlled account in order to maintain access to its data, even in the event of losing access to the account.(Citation: Wiz Midnight Blizzard 2024)(Citation: Microsoft Malicious OAuth Applications 2022)(Citation: Huntress Persistence Microsoft 365 Compromise 2024) In some cases, integrations may remain valid even after the original consenting user account is disabled.(Citation: Push Security Slack Persistence 2023) Application integrations may also allow adversaries to bypass multi-factor authentication requirements through the use of [Application Access Token](https://attack.mitre.org/techniques/T1550/001)s. Finally, they may enable persistent [Automated Exfiltration](https://attack.mitre.org/techniques/T1020) over time.(Citation: Synes Cyber Corner Malicious Azure Application 2023) Creating or adding a new application may require the adversary to create a dedicated [Cloud Account](https://attack.mitre.org/techniques/T1136/003) for the application and assign it [Additional Cloud Roles](https://attack.mitre.org/techniques/T1098/003) – for example, in Microsoft 365 environments, an application can only access resources via an associated service principal.(Citation: M
Near-miss passage: T1547.013 XDG Autostart Entries. Tactics: persistence, privilege escalation. Description: Adversaries may add or modify XDG Autostart Entries to execute malicious programs or commands when a user’s desktop environment is loaded at login. XDG Autostart entries are available for any XDG-compliant Linux system. XDG Autostart entries use Desktop Entry files (`.desktop`) to configure the user’s desktop environment upon user login. These configuration files determine what applications launch upon user login, define associated applications to open specific file types, and define applications used to open removable media.(Citation: Free Desktop Application Autostart Feb 2006)(Citation: Free Desktop Entry Keys) Adversaries may abuse this feature to establish persistence by adding a path to a malicious binary or command to the `Exec` directive in the `.desktop` configuration file. When the user’s desktop environment is loaded at user login, the `.desktop` files located in the XDG Autostart directories are automatically executed. System-wide Autostart entries are located in the `/etc/xdg/autostart` directory while the user entries are located in the `~/.config/autostart` directory. Adversaries may combine this technique with [Masquerading](https://attack.mitre.org/techniques/T1036) to blend malicious Autostart entries with legitimate programs.(Citation: Red Canary Netwire Linux 2022)