Keychain · SynAc

Senses

Keychain

Senses

Sense 1

Adversaries may acquire credentials from Keychain. Keychain (or Keychain Services) is the macOS credential management system that stores account names, passwords, private keys, certificates, sensitive application data, payment data, and secure notes. There are three types of Keychains: Login Keychain, System Keychain, and Local Items (iCloud) Keychain. The default Keychain is the Login Keychain, which stores user passwords and information. The System Keychain stores items accessed by the operating system, such as items shared among users on a host. The Local Items (iCloud) Keychain is used for items synced with Apple’s iCloud service. Keychains can be viewed and edited through the Keychain Access application or using the command line utility <code security</code . Keychain files are located in <code /Library/Keychains/</code , <code /Library/Keychains/</code , and <code /Network/Library/Keychains/</code .(Citation: Keychain Services Apple)(Citation: Keychain Decryption Passware)(Citation: OSX Keychain Schaumann) Adversaries may gather user credentials from Keychain storage/memory. For example, the command <code security dump keychain –d</code will dump all Login Keychain credentials from <code /Library/Keychains/login.keychain db</code . Adversaries may also directly read Login Keychain credentials from the <code /Library/Keychains/login.keychain</code file. Both methods require a password, where the default password for the Login Keychain is the current user’s password to login to the macOS host.(Citation: External to DA, the OS X Way)(Citation: Empire Keychain Decrypt)

Keychains can be viewed and edited through the Keychain Access application or using the command-line utility security. Keychain files are located in ~/Library/Keychains/, /Library/Keychains/, and /Network/Library/Keychains/.(Citation: Keychain Services Apple)(Citation: Keychain Decryption Passware)(Citation: OSX Keychain Schaumann)

Adversaries may gather user credentials from Keychain storage/memory. For example, the command security dump-keychain –d will dump all Login Keychain credentials from /Library/Keychains/login.keychain-db. Adversaries may also directly read Login Keychain credentials from the /Library/Keychains/login.keychain file. Both methods require a password, where the default password for the Login Keychain is the current user’s password to login to the macOS host.(Citation: External to DA, the OS X Way)(Citation: Empire Keychain Decrypt)

MITRE ATT&CK (CTI STIX Data)

Bibliography

Sense 2

Adversaries may collect keychain data from an iOS device to acquire credentials. Keychains are the built in way for iOS to keep track of users' passwords and credentials for many services and features such as Wi Fi passwords, websites, secure notes, certificates, private keys, and VPN credentials. On the device, the keychain database is stored outside of application sandboxes to prevent unauthorized access to the raw data. Standard iOS APIs allow applications access to their own keychain contained within the database. By utilizing a privilege escalation exploit or existing root access, adversaries can access the entire encrypted database.(Citation: Apple Keychain Services)(Citation: Elcomsoft Decrypt Keychain)

Adversaries may collect keychain data from an iOS device to acquire credentials. Keychains are the built-in way for iOS to keep track of users' passwords and credentials for many services and features such as Wi-Fi passwords, websites, secure notes, certificates, private keys, and VPN credentials.

On the device, the keychain database is stored outside of application sandboxes to prevent unauthorized access to the raw data. Standard iOS APIs allow applications access to their own keychain contained within the database. By utilizing a privilege escalation exploit or existing root access, adversaries can access the entire encrypted database.(Citation: Apple Keychain Services)(Citation: Elcomsoft Decrypt Keychain)

MITRE ATT&CK (Mobile, CTI STIX Data)