Adversaries may make changes to the operating system of embedded network devices to weaken defenses and provide new capabilities for themselves. On such devices, the operating systems are typically monolithic and most of the device functionality and capabilities are contained within a single file.
To change the operating system, the adversary typically only needs to affect this one file, replacing or modifying it. This can either be done live in memory during system runtime for immediate effect, or in storage to implement the change on the next boot of the network device.
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| action.malware.variety.Disable controls | Disable or interfere with security controls | related-to | T1601 | Modify System Image | |
| attribute.integrity.variety.Software installation | Software installation or code modification | related-to | T1601 | Modify System Image |
| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| binary_authorization | Binary Authorization | technique_scores | T1601 | Modify System Image |
Comments
Each image has a signer digitally sign using a private key. At deploy time, the enforcer uses the attester's public key to verify the signature in the attestation.
References
|
| Technique ID | Technique Name | Number of Mappings |
|---|---|---|
| T1601.001 | Patch System Image | 2 |
| T1601.002 | Downgrade System Image | 1 |