Environmental Keying (T1480.001)

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In Playbook

Technique & Subtechniques

Associated Tactics

  • Defense Evasion

Defense Evasion (TA0005)

The adversary is trying to avoid being detected. Defense Evasion consists of techniques that adversaries use to avoid detection throughout their compromise. Techniques used for defense evasion include uninstalling/disabling security software or obfuscating/encrypting data and scripts. Adversaries also leverage and abuse trusted processes to hide and masquerade their malware. Other tactics’ techniques are cross-listed here when those techniques include the added benefit of subverting defenses.

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Procedure Examples

Description Source(s)
Kafeine. (2016, December 13). Home Routers Under Attack via Malvertising on Windows, Android Devices. Retrieved January 16, 2019. Proofpoint Router Malvertising
Kaspersky Lab. (2012, August). Gauss: Abnormal Distribution. Retrieved January 17, 2019. Kaspersky Gauss Whitepaper
Morrow, T., Pitts, J. (2016, October 28). Genetic Malware: Designing Payloads for Specific Targets. Retrieved January 18, 2019. Ebowla: Genetic Malware
Riordan, J., Schneier, B. (1998, June 18). Environmental Key Generation towards Clueless Agents. Retrieved January 18, 2019. EK Clueless Agents
Song, C., et al. (2012, August 7). Impeding Automated Malware Analysis with Environment-sensitive Malware. Retrieved January 18, 2019. EK Impeding Malware Analysis
Warren, R. (2017, August 2). Demiguise: virginkey.js. Retrieved January 17, 2019. Demiguise Guardrail Router Logo
Warren, R. (2017, August 8). Smuggling HTA files in Internet Explorer/Edge. Retrieved January 16, 2019. Environmental Keyed HTA