T1571 Non-Standard Port
EnterpriseAdversaries may communicate using a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088 or port 587 as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data. Adversaries may also make changes to victim systems to abuse non-standard ports. For example, Registry keys and other configuration settings can be used to modify protocol and port pairings.
platforms
Platforms this applies to.
tactics
ATT&CK tactics this technique serves.
mitigations
ATT&CK mitigations that reduce this.
detected by (5)
Data components that detect this.
countered by (D3FEND)
D3FEND countermeasures that counter this.
Detect
NIST CSF 2.0 — areas of relevance (Protect / Detect)
NIST CSF 2.0 areas this most relates to (evidence-ranked).
- DE.CMContinuous Monitoringstrong · backed by 5 of 8 mapped controls
- PR.DSData Securitystrong · backed by 4 of 8 mapped controls
- PR.PSPlatform Securitymoderate · backed by 3 of 8 mapped controls
Derived from MITRE CTID (Apache-2.0) and the NIST 800-53 ↔ CSF crosswalk (public domain). Indicative relevance along the Protect/Detect axis — not a compliance assessment or coverage claim.
mitigating controls (8)
Security controls that mitigate this.
known-exploited CVEs (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-38035US | critical9.8OT critical | KEV | ||
A security vulnerability in MICS Admin Portal in Ivanti MobileIron Sentry versions 9.18.0 and below, which may allow an attacker to bypass authentication controls on the administra… | ||||
groups (19)
Threat groups associated with this.
software (41)
Malware and tools associated with this.
campaigns (8)
Campaigns that use this.
Detected by (Sigma) (5)
Sigma detection rules related to this.
source
Where this definition is published.