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MITRE ATT&CK - Техника Изменение IFEO
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Изменение IFEO
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Изменение IFEO

Image File Execution Options (IFEO) enable a developer to attach a debugger to an application. When a process is created, a debugger present in an application’s IFEO will be prepended to the application’s name, effectively launching the new process under the debugger (e.g., “C:\dbg\ntsd.exe -g notepad.exe”). (Citation: Microsoft Dev Blog IFEO Mar 2010) IFEOs can be set directly via the Registry or in Global Flags via the GFlags tool. (Citation: Microsoft GFlags Mar 2017) IFEOs are represented as Debugger values in the Registry under HKLM\SOFTWARE{\Wow6432Node}\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ where is the binary on which the debugger is attached. (Citation: Microsoft Dev Blog IFEO Mar 2010) IFEOs can also enable an arbitrary monitor program to be launched when a specified program silently exits (i.e. is prematurely terminated by itself or a second, non kernel-mode process). (Citation: Microsoft Silent Process Exit NOV 2017) (Citation: Oddvar Moe IFEO APR 2018) Similar to debuggers, silent exit monitoring can be enabled through GFlags and/or by directly modifying IEFO and silent process exit Registry values in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\. (Citation: Microsoft Silent Process Exit NOV 2017) (Citation: Oddvar Moe IFEO APR 2018) An example where the evil.exe process is started when notepad.exe exits: (Citation: Oddvar Moe IFEO APR 2018) * reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe" /v GlobalFlag /t REG_DWORD /d 512 * reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\notepad.exe" /v ReportingMode /t REG_DWORD /d 1 * reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\notepad.exe" /v MonitorProcess /d "C:\temp\evil.exe" Similar to Process Injection, these values may be abused to obtain persistence and privilege escalation by causing a malicious executable to be loaded and run in the context of separate processes on the computer. (Citation: Elastic Process Injection July 2017) Installing IFEO mechanisms may also provide Persistence via continuous invocation. Malware may also use IFEO for Defense Evasion by registering invalid debuggers that redirect and effectively disable various system and security applications. (Citation: FSecure Hupigon) (Citation: Symantec Ushedix June 2008)

ID: T1183
Тактика(-и): Defense Evasion, Persistence, Privilege Escalation
Платформы: Windows
Требуемые разрешения: Administrator, SYSTEM
Версия: 1.0
Дата создания: 16 Jan 2018
Последнее изменение: 10 Nov 2020

Контрмеры
Контрмера Описание
Image File Execution Options Injection Mitigation

This type of attack technique cannot be easily mitigated with preventive controls since it is based on the abuse of operating system design features. For example, mitigating all IFEO will likely have unintended side effects, such as preventing legitimate software (i.e., security products) from operating properly. (Citation: Microsoft IFEOorMalware July 2015) Efforts should be focused on preventing adversary tools from running earlier in the chain of activity and on identifying subsequent malicious behavior. Identify and block potentially malicious software that may be executed through IFEO by using whitelisting (Citation: Beechey 2010) tools, like AppLocker, (Citation: Windows Commands JPCERT) (Citation: NSA MS AppLocker) that are capable of auditing and/or blocking unknown executables.

Обнаружение

Monitor for common processes spawned under abnormal parents and/or with creation flags indicative of debugging such as DEBUG_PROCESS and DEBUG_ONLY_THIS_PROCESS. (Citation: Microsoft Dev Blog IFEO Mar 2010) Monitor Registry values associated with IFEOs, as well as silent process exit monitoring, for modifications that do not correlate with known software, patch cycles, etc. Monitor and analyze application programming interface (API) calls that are indicative of Registry edits such as RegCreateKeyEx and RegSetValueEx. (Citation: Elastic Process Injection July 2017)

Ссылки

  1. Symantec. (2008, June 28). Trojan.Ushedix. Retrieved December 18, 2017.
  2. FSecure. (n.d.). Backdoor - W32/Hupigon.EMV - Threat Description. Retrieved December 18, 2017.
  3. Hosseini, A. (2017, July 18). Ten Process Injection Techniques: A Technical Survey Of Common And Trending Process Injection Techniques. Retrieved December 7, 2017.
  4. Moe, O. (2018, April 10). Persistence using GlobalFlags in Image File Execution Options - Hidden from Autoruns.exe. Retrieved June 27, 2018.
  5. Marshall, D. & Griffin, S. (2017, November 28). Monitoring Silent Process Exit. Retrieved June 27, 2018.
  6. Microsoft. (2017, May 23). GFlags Overview. Retrieved December 18, 2017.
  7. Shanbhag, M. (2010, March 24). Image File Execution Options (IFEO). Retrieved December 18, 2017.
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