T1557.002: Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection
T1557.002 (Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection) is classified under the Credential Access tactic within the MITRE ATT&CK framework. Techniques for stealing credentials such as plaintext passwords, password hashes, and Kerberos tickets using memory dumping (LSASS) and browser credential store decryption. In telemetry gathered across enterprise endpoints and the EMBER 2018 benchmark, this technique was weaponized across 1 distinct malware families, totaling over 1,678 validated samples.
Technical Anatomy & Adversary Tradecraft
Adversaries leverage Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection to accomplish operational objectives while minimizing anomalous forensic footprints. When executing Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection, malicious binaries commonly interact directly with low-level Windows APIs, kernel mode drivers, or native scripting interfaces to bypass traditional file-integrity monitors and static antivirus signatures.
In modern multi-stage campaigns, T1557.002 is frequently observed functioning as an intermediate bridge: initial access payloads (such as spearphishing loaders or exploit macros) execute Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection to establish in-memory execution or persistence before staging secondary ransomware or data-exfiltration implants.
https://attack.mitre.org/techniques/T1557/002/.
Detection Engineering & Threat Hunting
Detecting Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection requires telemetry correlation across endpoint detection and response (EDR) agents, Sysmon event streams, and security information event management (SIEM) pipelines:
- Process Creation & Lineage: Monitor parent-child process anomalies where unexpected parent binaries (e.g., Office executables, web browsers, or script hosts) spawn command shells or native Windows utilities.
- API Hooking & Behavioral Telemetry: EDR platforms should flag rapid calls to memory allocation, process injection, or registry manipulation APIs originating from unbacked executable memory regions.
- Network Anomaly Correlation: Cross-reference endpoint execution timestamps with external network socket establishment to identify anomalous beaconing or covert data staging.
SOC Containment & Hardening Guidance
To mitigate risks associated with T1557.002 (Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection) across production infrastructure, security teams should implement the following defensive controls:
- Attack Surface Reduction (ASR): Enforce strict application control policies (WDAC or AppLocker) to restrict execution to signed and verified corporate binaries.
- Least Privilege & Credential Hygiene: Restrict local administrative privileges to prevent adversaries from tampering with defensive agents or escalating privileges.
- Network Microsegmentation: Restrict lateral communication across endpoint VLANs to prevent wormable payloads from utilizing Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection across adjacent network segments.
Cataloged Malware Families Utilizing T1557.002 (1 Families)
The following malware families in the SystemHelpDesk catalog have been verified utilizing T1557.002 (Adversary-in-the-Middle: ARP Poisoning / Local Proxy Injection):