Elevated Execution with Prompt

T1548.004

Sub-technique of T1548 Abuse Elevation Control Mechanism.View on attack.mitre.org

About this technique

Adversaries may leverage the AuthorizationExecuteWithPrivileges API to escalate privileges by prompting the user for credentials. The purpose of this API is to give application developers an easy way to perform operations with root privileges, such as for application installation or updating. This API does not validate that the program requesting root privileges comes from a reputable source or has been maliciously modified.

Although this API is deprecated, it still fully functions in the latest releases of macOS. When calling this API, the user will be prompted to enter their credentials but no checks on the origin or integrity of the program are made. The program calling the API may also load world writable files which can be modified to perform malicious behavior with elevated privileges.

Adversaries may abuse AuthorizationExecuteWithPrivileges to obtain root privileges in order to install malicious software on victims and install persistence mechanisms. This technique may be combined with Masquerading to trick the user into granting escalated privileges to malicious code. This technique has also been shown to work by modifying legitimate programs present on the machine that make use of this API.

Detection rules0

Rules on DetectionCode tagged with T1548.004.

Sigma0

No Sigma rules are mapped to this technique yet.

Splunk0

No Splunk rules are mapped to this technique yet.

Groups0

None recorded.

Software1

Campaigns0

None recorded.

Procedure examples1

Software1

Used byProcedure example
MalwareOSX/Shlayer

OSX/Shlayer can escalate privileges to root by asking the user for credentials.

References4

  1. AppleDocs AuthorizationExecuteWithPrivileges Open source
    Apple. (n.d.). Apple Developer Documentation - AuthorizationExecuteWithPrivileges. Retrieved August 8, 2019.
  2. Carbon Black Shlayer Feb 2019 Open source
    Carbon Black Threat Analysis Unit. (2019, February 12). New macOS Malware Variant of Shlayer (OSX) Discovered. Retrieved August 8, 2019.
  3. Death by 1000 installers; it's all broken! Open source
    Patrick Wardle. (2017). Death by 1000 installers; it's all broken!. Retrieved August 8, 2019.
  4. OSX Coldroot RAT Open source
    Patrick Wardle. (2018, February 17). Tearing Apart the Undetected (OSX)Coldroot RAT. Retrieved August 8, 2019.

Data from MITRE ATT&CK® (Enterprise). ATT&CK® is a registered trademark of The MITRE Corporation.