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  4. Input Capture
  5. GUI Input Capture

Input Capture: GUI Input Capture

ID Name
T1056.001 Keylogging
T1056.002 GUI Input Capture
T1056.003 Web Portal Capture
T1056.004 Credential API Hooking

Adversaries may mimic common operating system GUI components to prompt users for credentials with a seemingly legitimate prompt. When programs are executed that need additional privileges than are present in the current user context, it is common for the operating system to prompt the user for proper credentials to authorize the elevated privileges for the task (ex: Bypass User Account Control).

Adversaries may mimic this functionality to prompt users for credentials with a seemingly legitimate prompt for a number of reasons that mimic normal usage, such as a fake installer requiring additional access or a fake malware removal suite.[1] This type of prompt can be used to collect credentials via various languages such as AppleScript[2][3] and PowerShell[2][4].

ID: T1056.002
Sub-technique of:  T1056
Tactics: Collection, Credential Access
Platforms: Windows, macOS
Permissions Required: User
Data Sources: PowerShell logs, Process command-line parameters, Process monitoring, User interface
CAPEC ID: CAPEC-659
Contributors: Matthew Molyett, @s1air, Cisco Talos
Version: 1.0
Created: 11 February 2020
Last Modified: 24 March 2020

Procedure Examples

Name Description
Bundlore

Bundlore prompts the user for their credentials.[5]
Calisto

Calisto presents an input prompt asking for the user's login and password.[6]
Dok

Dok prompts the user for credentials.[7]
FIN4

FIN4 has presented victims with spoofed Windows Authentication prompts to collect their credentials.[8][9]
iKitten

iKitten prompts the user for their credentials.[7]
Keydnap

Keydnap prompts the users for credentials.[10]
Metamorfo

Metamorfo has displayed fake forms on top of banking sites to intercept credentials from victims.[11]

Proton

Proton prompts users for their credentials.[7]

Mitigations

Mitigation Description
User Training

Use user training as a way to bring awareness and raise suspicion for potentially malicious events and dialog boxes (ex: Office documents prompting for credentials).

Detection

Monitor process execution for unusual programs as well as malicious instances of Command and Scripting Interpreter that could be used to prompt users for credentials.

Inspect and scrutinize input prompts for indicators of illegitimacy, such as non-traditional banners, text, timing, and/or sources.

References

  1. Sergei Shevchenko. (2015, June 4). New Mac OS Malware Exploits Mackeeper. Retrieved July 3, 2017.
  2. Foss, G. (2014, October 3). Do You Trust Your Computer?. Retrieved December 17, 2018.
  3. Marc-Etienne M.Leveille. (2016, July 6). New OSX/Keydnap malware is hungry for credentials. Retrieved July 3, 2017.
  4. Nelson, M. (2015, January 21). Phishing for Credentials: If you want it, just ask!. Retrieved December 17, 2018.
  5. Sushko, O. (2019, April 17). macOS Bundlore: Mac Virus Bypassing macOS Security Features. Retrieved June 30, 2020.
  6. Pantig, J. (2018, July 30). OSX.Calisto. Retrieved September 7, 2018.
  1. Patrick Wardle. (n.d.). Mac Malware of 2017. Retrieved September 21, 2018.
  2. Vengerik, B. et al.. (2014, December 5). Hacking the Street? FIN4 Likely Playing the Market. Retrieved December 17, 2018.
  3. Vengerik, B. & Dennesen, K.. (2014, December 5). Hacking the Street? FIN4 Likely Playing the Market. Retrieved January 15, 2019.
  4. Patrick Wardle. (2017, January 1). Mac Malware of 2016. Retrieved September 21, 2018.
  5. Sierra, E., Iglesias, G.. (2018, April 24). Metamorfo Campaigns Targeting Brazilian Users. Retrieved July 30, 2020.