Patch System Image (T1601.001)

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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)
Sebastian 'topo' Muñiz. (2008, May). Killing the myth of Cisco IOS rootkits. Retrieved October 20, 2020. Killing the myth of Cisco IOS rootkits
Ang Cui, Jatin Kataria, Salvatore J. Stolfo. (2011, August). Killing the myth of Cisco IOS diversity: recent advances in reliable shellcode design. Retrieved October 20, 2020. Killing IOS diversity myth
George Nosenko. (2015). CISCO IOS SHELLCODE: ALL-IN-ONE. Retrieved October 21, 2020. Cisco IOS Shellcode
Felix 'FX' Lindner. (2008, February). Developments in Cisco IOS Forensics. Retrieved October 21, 2020. Cisco IOS Forensics Developments
Graeme Neilson . (2009, August). Juniper Netscreen of the Dead. Retrieved October 20, 2020. Juniper Netscreen of the Dead
Cisco. (n.d.). Cisco IOS Software Integrity Assurance - Cisco IOS Image File Verification. Retrieved October 19, 2020. Cisco IOS Software Integrity Assurance - Image File Verification
Cisco. (n.d.). Cisco IOS Software Integrity Assurance - Cisco IOS Run-Time Memory Integrity Verification. Retrieved October 19, 2020. Cisco IOS Software Integrity Assurance - Run-Time Memory Verification