T1071.002 File Transfer Protocols

sub-techniqueEnterprise

Adversaries may communicate using application layer protocols associated with transferring files 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. Protocols such as SMB, FTP, FTPS, and TFTP that transfer files may be very common in environments. Packets produced from these protocols may have many fields and headers in which data can be concealed. Data could also be concealed within the transferred files. An adversary may abuse these protocols to communicate with systems under their control within a victim network while also mimicking normal, expected traffic.

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platforms

Platforms this applies to.

ESXiLinuxmacOSNetwork DevicesWindows
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tactics

ATT&CK tactics this technique serves.

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sub-technique of

The broader entity this sits under.

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mitigations

ATT&CK mitigations that reduce this.

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NIST CSF 2.0 — areas of relevance (Protect / Detect)

NIST CSF 2.0 areas this most relates to (evidence-ranked).

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.

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known-exploited CVEs (1)

Related CVEs.

IDseverity exploitable
CVE-2023-40044UShigh8.8OT criticalKEV
In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote…
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groups (6)

Threat groups associated with this.

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software (20)

Malware and tools associated with this.

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campaigns (2)

Campaigns that use this.

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source

Where this definition is published.