ClickOnce (T1127.002)

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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)
LOLBAS. (n.d.). /Dfsvc.exe. Retrieved September 9, 2024. LOLBAS /Dfsvc.exe
Microsoft. (2023, September 14). ClickOnce security and deployment. Retrieved September 9, 2024. Microsoft Learn ClickOnce
Nick Powers. (2023, June 7). Less SmartScreen More Caffeine: (Ab)Using ClickOnce for Trusted Code Execution. Retrieved September 9, 2024. SpectorOps Medium ClickOnce
Ryan Gandrud. (2015, March 23). All You Need Is One – A ClickOnce Love Story. Retrieved September 9, 2024. NetSPI ClickOnce
William J. Burke IV. (n.d.). Appref-ms Abuse for Code Execution & C2. Retrieved September 9, 2024. Burke/CISA ClickOnce Paper
William Joseph Burke III. (2019, August 7). CLICKONCE AND YOU’RE IN: When .appref-ms abuse is operating as intended. Retrieved September 9, 2024. Burke/CISA ClickOnce BlackHat