AdLoad malware is still infecting Mac systems years after its first appearance in 2017. AdLoad, a package bundler, has been observed delivering a wide range of payloads throughout its existence. During AT&T Alien Labs’ investigation of its most recent payload, it was discovered that the most common component dropped by AdLoad during the past year has been a proxy application turning MacOS AdLoad victims into a giant, residential proxy botnet.

We would like to thank The Citizen Lab for their cooperation, support and inputs into this research.

• Commercial spyware use is on the rise, with actors leveraging these sophisticated tools to conduct surveillance operations against a growing number of targets. Cisco Talos has new details of a commercial spyware product sold by the spyware firm Intellexa (formerly known as Cytrox).
• Our research specifically looks at two components of this mobile spyware suite known as “ALIEN” and “PREDATOR,” which compose the backbone of the spyware implant. Our findings include an in-depth walkthrough of the infection chain, including the implants’ various information-stealing capabilities.
• A deep dive into both spyware components indicates that ALIEN is more than just a loader for PREDATOR and actively sets up the low-level capabilities needed for PREDATOR to spy on its victims.
• We assess with high confidence that the spyware has two additional components — tcore (main component) and kmem (privilege escalation mechanic) — but we were unable to obtain and analyze these modules.
• If readers suspect their system(s) may have been compromised by commercial spyware, please consider notifying Talos’ research team at talos-mercenary-spyware-help@external.cisco.com to assist in furthering the community’s knowledge of these threats.