T1071 Application Layer Protocol
EnterpriseAdversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server. Adversaries may utilize many different protocols, including those used for web browsing, transferring files, electronic mail, DNS, or publishing/subscribing. For connections that occur internally within an enclave (such as those between a proxy or pivot node and other nodes), commonly used protocols are SMB, SSH, or RDP.
platforms
Platforms this applies to.
tactics
ATT&CK tactics this technique serves.
sub-techniques (5)
More specific entries beneath this one.
mitigations
ATT&CK mitigations that reduce this.
detected by (5)
Data components that detect this.
countered by (D3FEND)
D3FEND countermeasures that counter this.
Detect
Isolate
Deceive
Restore
NIST CSF 2.0 — areas of relevance (Protect / Detect)
NIST CSF 2.0 areas this most relates to (evidence-ranked).
- DE.CMContinuous Monitoringmoderate · backed by 5 of 15 mapped controls
- PR.DSData Securitymoderate · backed by 4 of 15 mapped controls
- PR.PSPlatform Securitymoderate · backed by 3 of 15 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 (15)
Security controls that mitigate this.
known-exploited CVEs (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-45382US | critical9.8OT critical | KEV | ||
A Remote Command Execution (RCE) vulnerability exists in all series H/W revisions D-link DIR-810L, DIR-820L/LW, DIR-826L, DIR-830L, and DIR-836L routers via the DDNS function in nc… | ||||
groups (6)
Threat groups associated with this.
software (10)
Malware and tools associated with this.
campaigns (1)
Campaigns that use this.
Detected by (Sigma) (7)
Sigma detection rules related to this.
source
Where this definition is published.