Asynchronous Procedure Call (T1055.004)

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In Playbook

Associated Tactics

  • Defense Evasion
  • Privilege Escalation

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)
Microsoft. (n.d.). Asynchronous Procedure Calls. Retrieved December 8, 2017. Microsoft APC
Gavriel, H. & Erbesfeld, B. (2018, April 11). New ‘Early Bird’ Code Injection Technique Discovered. Retrieved May 24, 2018. CyberBit Early Bird Apr 2018
Liberman, T. (2016, October 27). ATOMBOMBING: BRAND NEW CODE INJECTION FOR WINDOWS. Retrieved December 8, 2017. ENSIL AtomBombing Oct 2016
Microsoft. (n.d.). About Atom Tables. Retrieved December 8, 2017. Microsoft Atom Table
Hosseini, A. (2017, July 18). Ten Process Injection Techniques: A Technical Survey Of Common And Trending Process Injection Techniques. Retrieved December 7, 2017. Elastic Process Injection July 2017