|Tactic||Collection, Credential Access|
|Platform||Linux, macOS, Windows|
|Permissions Required||Administrator, SYSTEM|
|Data Sources||Windows Registry, Kernel drivers, Process monitoring, API monitoring|
|Contributors||John Lambert, Microsoft Threat Intelligence Center|
Keylogging is the most prevalent type of input capture, with many different ways of intercepting keystrokes,1 but other methods exist to target information for specific purposes, such as performing a UAC prompt or wrapping the Windows default credential provider.2
Keylogging is likely to be used to acquire credentials for new access opportunities when Credential Dumping efforts are not effective, and may require an adversary to remain passive on a system for a period of time before an opportunity arises.
Adversaries may also install code on externally facing portals, such as a VPN login page, to capture and transmit credentials of users who attempt to log into the service. This variation on input capture may be conducted post-compromise using legitimate administrative access as a backup measure to maintain network access through External Remote Services and Valid Accounts or as part of the initial compromise by exploitation of the externally facing web service.3
- APT28 can deploy a tool to perform keylogging.4
- APT3 has used a keylogging tool that records keystrokes in encrypted files.5
- APT34 has used a keylogging tool called KEYPUNCH.6
- Darkhotel uses a sophisticated keylogger.7
- Malware used by Group5 is capable of capturing keystrokes.8
- Lazarus Group malware KiloAlfa contains keylogging functionality.9
- Magic Hound malware is capable of keylogging.10
- PLATINUM has used several different keyloggers.11
- Sowbug has used keylogging tools.12
- Threat Group-3390 actors installed a credential logger on Microsoft Exchange servers.13
- ADVSTORESHELL can perform keylogging.1415
- When it first starts, BADNEWS spawns a new thread to log keystrokes.1617
- BlackEnergy has run a keylogger plug-in on a victim.18
- CHOPSTICK is capable of performing keylogging.1914
- Carbanak contains keylogger functionality.20
- Cobalt Strike can track key presses with a keylogger module.21
- CosmicDuke uses a keylogger and steals clipboard contents from victims.22
- is capable of logging keystrokes.23
- captures keystrokes.24
- Daserf can log keystrokes.2526
- Derusbi is capable of logging keystrokes.27
- Duqu can track key presses with a keylogger module.28
- DustySky contains a keylogger.29
- EvilGrab has the capability to capture keystrokes.30
- FakeM contains a keylogger module.31
- HTTPBrowser is capable of capturing keystrokes on victims.13
- The executable version of Helminth has a module to log keystrokes.32
- JPIN contains a custom keylogger.11
- Kasidet has the ability to initiate keylogging.33
- Matroyshka is capable of keylogging.3435
- MoonWind has a keylogger.36
- can perform keylogging.3738
- NetTraveler contains a keylogger.39
- OwaAuth captures and DES-encrypts credentials before writing the username and password to a log file,
- PoisonIvy contains a keylogger.40
Get-KeystrokesExfiltration module can log keystrokes.4142
- Prikormka contains a keylogger module that collects keystrokes and the titles of foreground windows.43
- Pupy uses a keylogger to capture keystrokes it then sends back to the server after it is stopped.44
- RTM can record keystrokes from both the keyboard and virtual keyboard.45
- Regin contains a keylogger.46
- Remsec contains a keylogger component.4748
- Rover has keylogging functionality.49
- SslMM creates a new thread implementing a keylogging facility using Windows Keyboard Accelerators.50
- Sykipot contains keylogging functionality to steal passwords.51
- TinyZBot contains keylogger functionality.52
- Unknown Logger is capable of recording keystrokes.16
- XAgentOSX contains keylogging functionality that will monitor for active application windows and write them to the log, it can handle special characters, and it will buffer by default 50 characters before sending them out over the C2 infrastructure53.
- The gh0st RAT has a keylogger.54
Identify and block potentially malicious software that may be used to acquire credentials or information from the user by using whitelisting55 tools, like AppLocker,5657 or Software Restriction Policies58 where appropriate.59
In cases where this behavior is difficult to detect or mitigate, efforts can be made to lessen some of the impact that might result from an adversary acquiring credential information. It is also good practice to follow mitigation recommendations for adversary use of Valid Accounts.
Keyloggers may take many forms, possibly involving modification to the Registry and installation of a driver, setting a hook, or polling to intercept keystrokes. Commonly used API calls include SetWindowsHook, GetKeyState, and GetAsynceyState.1 Monitor the Registry and file system for such changes and detect driver installs, as well as looking for common keylogging API calls. API calls alone are not an indicator of keylogging, but may provide behavioral data that is useful when combined with other information such as new files written to disk and unusual processes.
Monitor the Registry for the addition of a Custom Credential Provider.2 Detection of compromised Valid Accounts in use by adversaries may help to catch the result of user input interception if new techniques are used.
- Tinaztepe, E. (n.d.). The Adventures of a Keystroke: An in-depth look into keyloggers on Windows. Retrieved April 27, 2016.
- Wrightson, T. (2012, January 2). CAPTURING WINDOWS 7 CREDENTIALS AT LOGON USING CUSTOM CREDENTIAL PROVIDER. Retrieved November 12, 2014.
- Adair, S. (2015, October 7). Virtual Private Keylogging: Cisco Web VPNs Leveraged for Access and Persistence. Retrieved March 20, 2017.
- Anthe, C. et al. (2015, October 19). Microsoft Security Intelligence Report Volume 19. Retrieved December 23, 2015.
- Symantec Security Response. (2016, September 6). Buckeye cyberespionage group shifts gaze from US to Hong Kong. Retrieved September 26, 2016.
- Davis, S. and Caban, D. (2017, December 19). APT34 - New Targeted Attack in the Middle East. Retrieved December 20, 2017.
- Kaspersky Lab's Global Research and Analysis Team. (2014, November). The Darkhotel APT A Story of Unusual Hospitality. Retrieved November 12, 2014.
- Scott-Railton, J., et al. (2016, August 2). Group5: Syria and the Iranian Connection. Retrieved September 26, 2016.
- Novetta Threat Research Group. (2016, February 24). Operation Blockbuster: Tools Report. Retrieved March 10, 2016.
- Lee, B. and Falcone, R. (2017, February 15). Magic Hound Campaign Attacks Saudi Targets. Retrieved December 27, 2017.
- Windows Defender Advanced Threat Hunting Team. (2016, April 29). PLATINUM: Targeted attacks in South and Southeast Asia. Retrieved February 15, 2018.
- Symantec Security Response. (2017, November 7). Sowbug: Cyber espionage group targets South American and Southeast Asian governments. Retrieved November 16, 2017.
- Dell SecureWorks Counter Threat Unit Threat Intelligence. (2015, August 5). Threat Group-3390 Targets Organizations for Cyberespionage. Retrieved January 25, 2016.
- ESET. (2016, October). En Route with Sednit - Part 2: Observing the Comings and Goings. Retrieved November 21, 2016.
- Bitdefender. (2015, December). APT28 Under the Scope. Retrieved February 23, 2017.
- Settle, A., et al. (2016, August 8). MONSOON - Analysis Of An APT Campaign. Retrieved September 22, 2016.
- Levene, B. et al.. (2018, March 7). Patchwork Continues to Deliver BADNEWS to the Indian Subcontinent. Retrieved March 31, 2018.
- Baumgartner, K. and Garnaeva, M.. (2014, November 3). BE2 custom plugins, router abuse, and target profiles. Retrieved March 24, 2016.
- Alperovitch, D.. (2016, June 15). Bears in the Midst: Intrusion into the Democratic National Committee. Retrieved August 3, 2016.
- Kaspersky Lab's Global Research and Analysis Team. (2015, February). CARBANAK APT THE GREAT BANK ROBBERY. Retrieved March 3, 2015.
- Strategic Cyber LLC. (2017, March 14). Cobalt Strike Manual. Retrieved May 24, 2017.
- F-Secure Labs. (2015, September 17). The Dukes: 7 years of Russian cyberespionage. Retrieved December 10, 2015.
- FireEye. (2018, February 20). APT37 (Reaper): The Overlooked North Korean Actor. Retrieved March 1, 2018.
- Hayashi, K. (2005, August 18). Backdoor.Darkmoon. Retrieved February 23, 2018.
- Chen, J. and Hsieh, M. (2017, November 7). REDBALDKNIGHT/BRONZE BUTLER’s Daserf Backdoor Now Using Steganography. Retrieved December 27, 2017.
- Counter Threat Unit Research Team. (2017, October 12). BRONZE BUTLER Targets Japanese Enterprises. Retrieved January 4, 2018.
- FireEye. (2018, March 16). Suspected Chinese Cyber Espionage Group (TEMP.Periscope) Targeting U.S. Engineering and Maritime Industries. Retrieved April 11, 2018.
- Symantec Security Response. (2011, November). W32.Duqu: The precursor to the next Stuxnet. Retrieved September 17, 2015.
- ClearSky. (2016, January 7). Operation DustySky. Retrieved January 8, 2016.
- PwC and BAE Systems. (2017, April). Operation Cloud Hopper: Technical Annex. Retrieved April 13, 2017.
- Falcone, R. and Miller-Osborn, J.. (2016, January 24). Scarlet Mimic: Years-Long Espionage Campaign Targets Minority Activists. Retrieved February 10, 2016.
- Falcone, R. and Lee, B.. (2016, May 26). The OilRig Campaign: Attacks on Saudi Arabian Organizations Deliver Helminth Backdoor. Retrieved May 3, 2017.
- Yadav, A., et al. (2016, January 29). Malicious Office files dropping Kasidet and Dridex. Retrieved March 24, 2016.
- ClearSky Cyber Security and Trend Micro. (2017, July). Operation Wilted Tulip: Exposing a cyber espionage apparatus. Retrieved August 21, 2017.
- Minerva Labs LTD and ClearSky Cyber Security. (2015, November 23). CopyKittens Attack Group. Retrieved September 11, 2017.
- Miller-Osborn, J. and Grunzweig, J.. (2017, March 30). Trochilus and New MoonWind RATs Used In Attack Against Thai Organizations. Retrieved March 30, 2017.
- McAfee. (2015, March 2). Netwire RAT Behind Recent Targeted Attacks. Retrieved February 15, 2018.
- Davis, S. and Carr, N. (2017, September 21). APT33: New Insights into Iranian Cyber Espionage Group. Retrieved February 15, 2018.
- Kaspersky Lab's Global Research and Analysis Team. (n.d.). The NetTraveler (aka ‘Travnet’). Retrieved November 12, 2014.
- FireEye. (2014). POISON IVY: Assessing Damage and Extracting Intelligence. Retrieved November 12, 2014.
- PowerShellMafia. (2012, May 26). PowerSploit - A PowerShell Post-Exploitation Framework. Retrieved February 6, 2018.
- PowerSploit. (n.d.). PowerSploit. Retrieved February 6, 2018.
- Cherepanov, A.. (2016, May 17). Operation Groundbait: Analysis of a surveillance toolkit. Retrieved May 18, 2016.
- Nicolas Verdier. (n.d.). Retrieved January 29, 2018.
- Faou, M. and Boutin, J.. (2017, February). Read The Manual: A Guide to the RTM Banking Trojan. Retrieved March 9, 2017.
- Kaspersky Lab's Global Research and Analysis Team. (2014, November 24). THE REGIN PLATFORM NATION-STATE OWNAGE OF GSM NETWORKS. Retrieved December 1, 2014.
- Symantec Security Response. (2016, August 8). Backdoor.Remsec indicators of compromise. Retrieved August 17, 2016.
- Kaspersky Lab's Global Research & Analysis Team. (2016, August 9). The ProjectSauron APT. Technical Analysis. Retrieved August 17, 2016.
- Ray, V., Hayashi, K. (2016, February 29). New Malware ‘Rover’ Targets Indian Ambassador to Afghanistan. Retrieved February 29, 2016.
- Baumgartner, K., Golovkin, M.. (2015, May). The MsnMM Campaigns: The Earliest Naikon APT Campaigns. Retrieved December 17, 2015.
- Blasco, J. (2012, January 12). Sykipot variant hijacks DOD and Windows smart cards. Retrieved January 10, 2016.
- Cylance. (2014, December). Operation Cleaver. Retrieved September 14, 2017.
- Robert Falcone. (2017, February 14). XAgentOSX: Sofacy's Xagent macOS Tool. Retrieved July 12, 2017.
- Alintanahin, K. (2014, March 13). Kunming Attack Leads to Gh0st RAT Variant. Retrieved November 12, 2014.
- Beechey, J. (2010, December). Application Whitelisting: Panacea or Propaganda?. Retrieved November 18, 2014.
- Tomonaga, S. (2016, January 26). Windows Commands Abused by Attackers. Retrieved February 2, 2016.
- NSA Information Assurance Directorate. (2014, August). Application Whitelisting Using Microsoft AppLocker. Retrieved March 31, 2016.
- Corio, C., & Sayana, D. P. (2008, June). Application Lockdown with Software Restriction Policies. Retrieved November 18, 2014.
- Microsoft. (2012, June 27). Using Software Restriction Policies and AppLocker Policies. Retrieved April 7, 2016.