ATT&CKReferencesShlayer jamf gatekeeper bypass 2021

Shlayer jamf gatekeeper bypass 2021

Jaron Bradley. (2021, April 26). Shlayer malware abusing Gatekeeper bypass on macOS. Retrieved September 22, 2021.

Open the source

Techniques0

Not cited by any technique.

Groups0

None recorded.

Software0

None recorded.

Campaigns0

None recorded.

Procedure examples4

TechniqueUsed byProcedure example
T1222.002
Linux and Mac Permissions
MalwareOSX/Shlayer

OSX/Shlayer can use the chmod utility to set a file as executable, such as chmod 777 or chmod +x.

T1553.001
Gatekeeper Bypass
MalwareOSX/Shlayer

If running with elevated privileges, OSX/Shlayer has used the spctl command to disable Gatekeeper protection for a downloaded file. OSX/Shlayer can also leverage system links pointing to bash scripts in the downloaded DMG file to bypass Gatekeeper, a flaw patched in macOS 11.3 and later versions. OSX/Shlayer has been Notarized by Apple, resulting in successful passing of additional Gatekeeper checks.

T1564
Hide Artifacts
MalwareOSX/Shlayer

OSX/Shlayer has used the mktemp utility to make random and unique filenames for payloads, such as export tmpDir="$(mktemp -d /tmp/XXXXXXXXXXXX)" or mktemp -t Installer.

T1564.011
Ignore Process Interrupts
MalwareOSX/Shlayer

OSX/Shlayer has used the `nohup` command to instruct executed payloads to ignore hangup signals.

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