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T1078 Valid Accounts

Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Compromised credentials may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access, network devices, and remote desktop.1 Compromised credentials may also grant an adversary increased privilege to specific systems or access to restricted areas of the network. Adversaries may choose not to use malware or tools in conjunction with the legitimate access those credentials provide to make it harder to detect their presence.

In some cases, adversaries may abuse inactive accounts: for example, those belonging to individuals who are no longer part of an organization. Using these accounts may allow the adversary to evade detection, as the original account user will not be present to identify any anomalous activity taking place on their account.2

The overlap of permissions for local, domain, and cloud accounts across a network of systems is of concern because the adversary may be able to pivot across accounts and systems to reach a high level of access (i.e., domain or enterprise administrator) to bypass access controls set within the enterprise.3

Item Value
ID T1078
Sub-techniques T1078.001, T1078.002, T1078.003, T1078.004
Tactics TA0005, TA0003, TA0004, TA0001
Platforms Azure AD, Containers, Google Workspace, IaaS, Linux, Network, Office 365, SaaS, Windows, macOS
Permissions required Administrator, User
Version 2.6
Created 31 May 2017
Last Modified 30 March 2023

Procedure Examples

ID Name Description
G0026 APT18 APT18 actors leverage legitimate credentials to log into external remote services.61
G0007 APT28 APT28 has used legitimate credentials to gain initial access, maintain access, and exfiltrate data from a victim network. The group has specifically used credentials stolen through a spearphishing email to login to the DCCC network. The group has also leveraged default manufacturer’s passwords to gain initial access to corporate networks via IoT devices such as a VOIP phone, printer, and video decoder.51525354
G0016 APT29 APT29 has used a compromised account to access an organization’s VPN infrastructure.31
G0064 APT33 APT33 has used valid accounts for initial access and privilege escalation.1819
G0087 APT39 APT39 has used stolen credentials to compromise Outlook Web Access (OWA).49
G0096 APT41 APT41 used compromised credentials to log on to other systems.1716
G0001 Axiom Axiom has used previously compromised administrative accounts to escalate privileges.41
G0008 Carbanak Carbanak actors used legitimate credentials of banking employees to perform operations that sent them millions of dollars.38
G0114 Chimera Chimera has used a valid account to maintain persistence via scheduled task.15
G0035 Dragonfly Dragonfly has compromised user credentials and used valid accounts for operations.424344
S0567 Dtrack Dtrack used hard-coded credentials to gain access to a network share.9
S0038 Duqu Adversaries can instruct Duqu to spread laterally by copying itself to shares it has enumerated and for which it has obtained legitimate credentials (via keylogging or other means). The remote host is then infected by using the compromised credentials to schedule a task on remote machines that executes the malware.14
G0051 FIN10 FIN10 has used stolen credentials to connect remotely to victim networks using VPNs protected with only a single factor.32
G0085 FIN4 FIN4 has used legitimate credentials to hijack email communications.6362
G0053 FIN5 FIN5 has used legitimate VPN, RDP, Citrix, or VNC credentials to maintain access to a victim environment.454647
G0037 FIN6 To move laterally on a victim network, FIN6 has used credentials stolen from various systems on which it gathered usernames and password hashes.282930
G0046 FIN7 FIN7 has harvested valid administrative credentials for lateral movement.39
G0061 FIN8 FIN8 has used valid accounts for persistence and lateral movement.59
G0117 Fox Kitten Fox Kitten has used valid credentials with various services during lateral movement.48
G0093 GALLIUM GALLIUM leveraged valid accounts to maintain access to a victim network.55
S0604 Industroyer Industroyer can use supplied user credentials to execute processes and stop services.12
G0004 Ke3chang Ke3chang has used credential dumpers or stealers to obtain legitimate credentials, which they used to gain access to victim accounts.22
S0599 Kinsing Kinsing has used valid SSH credentials to access remote hosts.10
G1004 LAPSUS$ LAPSUS$ has used compromised credentials and/or session tokens to gain access into a victim’s VPN, VDI, RDP, and IAMs.37
G0032 Lazarus Group Lazarus Group has used administrator credentials to gain access to restricted network segments.64
G0065 Leviathan Leviathan has obtained valid accounts to gain initial access.3536
S0362 Linux Rabbit Linux Rabbit acquires valid SSH accounts through brute force. 13
G0045 menuPass menuPass has used valid accounts including shared between Managed Service Providers and clients to move between the two environments.24252623
C0002 Night Dragon During Night Dragon, threat actors used compromised VPN accounts to gain access to victim systems.66
G0049 OilRig OilRig has used compromised credentials to access other systems on a victim network.575616
C0014 Operation Wocao During Operation Wocao, threat actors used valid VPN credentials to gain initial access.65
G0011 PittyTiger PittyTiger attempts to obtain legitimate credentials during operations.27
G1005 POLONIUM POLONIUM has used valid compromised credentials to gain access to victim environments.34
G0034 Sandworm Team Sandworm Team have used previously acquired legitimate credentials prior to attacks.50
S0053 SeaDuke Some SeaDuke samples have a module to extract email from Microsoft Exchange servers using compromised credentials.11
G0091 Silence Silence has used compromised credentials to log on to other systems and escalate privileges.20
G0122 Silent Librarian Silent Librarian has used compromised credentials to obtain unauthorized access to online accounts.21
C0024 SolarWinds Compromise During the SolarWinds Compromise, APT29 used different compromised credentials for remote access and to move laterally.676869
G0039 Suckfly Suckfly used legitimate account credentials that they dumped to navigate the internal victim network as though they were the legitimate account owner.58
G0088 TEMP.Veles TEMP.Veles has used compromised VPN accounts.33
G0027 Threat Group-3390 Threat Group-3390 actors obtain legitimate credentials using a variety of methods and use them to further lateral movement on victim networks.40
G0102 Wizard Spider Wizard Spider has used valid credentials for privileged accounts with the goal of accessing domain controllers.60

Mitigations

ID Mitigation Description
M1036 Account Use Policies Use conditional access policies to block logins from non-compliant devices or from outside defined organization IP ranges.8
M1015 Active Directory Configuration Disable legacy authentication, which does not support MFA, and require the use of modern authentication protocols instead.
M1013 Application Developer Guidance Ensure that applications do not store sensitive data or credentials insecurely. (e.g. plaintext credentials in code, published credentials in repositories, or credentials in public cloud storage).
M1027 Password Policies Applications and appliances that utilize default username and password should be changed immediately after the installation, and before deployment to a production environment.7 When possible, applications that use SSH keys should be updated periodically and properly secured.
M1026 Privileged Account Management Audit domain and local accounts as well as their permission levels routinely to look for situations that could allow an adversary to gain wide access by obtaining credentials of a privileged account. 3 5 These audits should also include if default accounts have been enabled, or if new local accounts are created that have not be authorized. Follow best practices for design and administration of an enterprise network to limit privileged account use across administrative tiers. 6
M1018 User Account Management Regularly audit user accounts for activity and deactivate or remove any that are no longer needed.
M1017 User Training Applications may send push notifications to verify a login as a form of multi-factor authentication (MFA). Train users to only accept valid push notifications and to report suspicious push notifications.

Detection

ID Data Source Data Component
DS0028 Logon Session Logon Session Creation
DS0002 User Account User Account Authentication

References


  1. Adair, S., Lancaster, T., Volexity Threat Research. (2022, June 15). DriftingCloud: Zero-Day Sophos Firewall Exploitation and an Insidious Breach. Retrieved July 1, 2022. 

  2. Cybersecurity and Infrastructure Security Agency. (2022, March 15). Russian State-Sponsored Cyber Actors Gain Network Access by Exploiting Default Multifactor Authentication Protocols and “PrintNightmare” Vulnerability. Retrieved March 16, 2022. 

  3. Microsoft. (2016, April 15). Attractive Accounts for Credential Theft. Retrieved June 3, 2016. 

  4. Microsoft. (2016, April 15). Audit Policy Recommendations. Retrieved June 3, 2016. 

  5. Microsoft. (2016, April 16). Implementing Least-Privilege Administrative Models. Retrieved June 3, 2016. 

  6. Plett, C., Poggemeyer, L. (12, October 26). Securing Privileged Access Reference Material. Retrieved April 25, 2017. 

  7. US-CERT. (n.d.). Risks of Default Passwords on the Internet. Retrieved April 12, 2019. 

  8. Microsoft. (2022, December 14). Conditional Access templates. Retrieved February 21, 2023. 

  9. Hod Gavriel. (2019, November 21). Dtrack: In-depth analysis of APT on a nuclear power plant. Retrieved January 20, 2021. 

  10. Singer, G. (2020, April 3). Threat Alert: Kinsing Malware Attacks Targeting Container Environments. Retrieved April 1, 2021. 

  11. Symantec Security Response. (2015, July 13). “Forkmeiamfamous”: Seaduke, latest weapon in the Duke armory. Retrieved July 22, 2015. 

  12. Anton Cherepanov. (2017, June 12). Win32/Industroyer: A new threat for industrial controls systems. Retrieved December 18, 2020. 

  13. Anomali Labs. (2018, December 6). Pulling Linux Rabbit/Rabbot Malware Out of a Hat. Retrieved March 4, 2019. 

  14. Symantec Security Response. (2011, November). W32.Duqu: The precursor to the next Stuxnet. Retrieved September 17, 2015. 

  15. Cycraft. (2020, April 15). APT Group Chimera - APT Operation Skeleton key Targets Taiwan Semiconductor Vendors. Retrieved August 24, 2020. 

  16. Crowdstrike. (2020, March 2). 2020 Global Threat Report. Retrieved December 11, 2020. 

  17. Fraser, N., et al. (2019, August 7). Double DragonAPT41, a dual espionage and cyber crime operation APT41. Retrieved September 23, 2019. 

  18. Davis, S. and Carr, N. (2017, September 21). APT33: New Insights into Iranian Cyber Espionage Group. Retrieved February 15, 2018. 

  19. Ackerman, G., et al. (2018, December 21). OVERRULED: Containing a Potentially Destructive Adversary. Retrieved January 17, 2019. 

  20. Group-IB. (2018, September). Silence: Moving Into the Darkside. Retrieved May 5, 2020. 

  21. DOJ. (2018, March 23). U.S. v. Rafatnejad et al . Retrieved February 3, 2021. 

  22. MSTIC. (2021, December 6). NICKEL targeting government organizations across Latin America and Europe. Retrieved March 18, 2022. 

  23. GREAT. (2021, March 30). APT10: sophisticated multi-layered loader Ecipekac discovered in A41APT campaign. Retrieved June 17, 2021. 

  24. PwC and BAE Systems. (2017, April). Operation Cloud Hopper. Retrieved April 5, 2017. 

  25. Symantec. (2020, November 17). Japan-Linked Organizations Targeted in Long-Running and Sophisticated Attack Campaign. Retrieved December 17, 2020. 

  26. US District Court Southern District of New York. (2018, December 17). United States v. Zhu Hua Indictment. Retrieved December 17, 2020. 

  27. Bizeul, D., Fontarensky, I., Mouchoux, R., Perigaud, F., Pernet, C. (2014, July 11). Eye of the Tiger. Retrieved September 29, 2015. 

  28. FireEye Threat Intelligence. (2016, April). Follow the Money: Dissecting the Operations of the Cyber Crime Group FIN6. Retrieved June 1, 2016. 

  29. McKeague, B. et al. (2019, April 5). Pick-Six: Intercepting a FIN6 Intrusion, an Actor Recently Tied to Ryuk and LockerGoga Ransomware. Retrieved April 17, 2019. 

  30. Visa Public. (2019, February). FIN6 Cybercrime Group Expands Threat to eCommerce Merchants. Retrieved September 16, 2019. 

  31. Douglas Bienstock. (2022, August 18). You Can’t Audit Me: APT29 Continues Targeting Microsoft 365. Retrieved February 23, 2023. 

  32. FireEye iSIGHT Intelligence. (2017, June 16). FIN10: Anatomy of a Cyber Extortion Operation. Retrieved June 25, 2017. 

  33. Miller, S, et al. (2019, April 10). TRITON Actor TTP Profile, Custom Attack Tools, Detections, and ATT&CK Mapping. Retrieved April 16, 2019. 

  34. Microsoft. (2022, June 2). Exposing POLONIUM activity and infrastructure targeting Israeli organizations. Retrieved July 1, 2022. 

  35. CISA. (2021, July 19). (AA21-200A) Joint Cybersecurity Advisory – Tactics, Techniques, and Procedures of Indicted APT40 Actors Associated with China’s MSS Hainan State Security Department. Retrieved August 12, 2021. 

  36. Accenture iDefense Unit. (2019, March 5). Mudcarp’s Focus on Submarine Technologies. Retrieved August 24, 2021. 

  37. MSTIC, DART, M365 Defender. (2022, March 24). DEV-0537 Criminal Actor Targeting Organizations for Data Exfiltration and Destruction. Retrieved May 17, 2022. 

  38. Kaspersky Lab’s Global Research and Analysis Team. (2015, February). CARBANAK APT THE GREAT BANK ROBBERY. Retrieved August 23, 2018. 

  39. Loui, E. and Reynolds, J. (2021, August 30). CARBON SPIDER Embraces Big Game Hunting, Part 1. Retrieved September 20, 2021. 

  40. Dell SecureWorks Counter Threat Unit Threat Intelligence. (2015, August 5). Threat Group-3390 Targets Organizations for Cyberespionage. Retrieved August 18, 2018. 

  41. Novetta. (n.d.). Operation SMN: Axiom Threat Actor Group Report. Retrieved November 12, 2014. 

  42. US-CERT. (2018, March 16). Alert (TA18-074A): Russian Government Cyber Activity Targeting Energy and Other Critical Infrastructure Sectors. Retrieved June 6, 2018. 

  43. Slowik, J. (2021, October). THE BAFFLING BERSERK BEAR: A DECADE’S ACTIVITY TARGETING CRITICAL INFRASTRUCTURE. Retrieved December 6, 2021. 

  44. CISA. (2020, December 1). Russian State-Sponsored Advanced Persistent Threat Actor Compromises U.S. Government Targets. Retrieved December 9, 2021. 

  45. Scavella, T. and Rifki, A. (2017, July 20). Are you Ready to Respond? (Webinar). Retrieved October 4, 2017. 

  46. Higgins, K. (2015, October 13). Prolific Cybercrime Gang Favors Legit Login Credentials. Retrieved October 4, 2017. 

  47. Bromiley, M. and Lewis, P. (2016, October 7). Attacking the Hospitality and Gaming Industries: Tracking an Attacker Around the World in 7 Years. Retrieved October 6, 2017. 

  48. CISA. (2020, September 15). Iran-Based Threat Actor Exploits VPN Vulnerabilities. Retrieved December 21, 2020. 

  49. Hawley et al. (2019, January 29). APT39: An Iranian Cyber Espionage Group Focused on Personal Information. Retrieved February 19, 2019. 

  50. US-CERT. (2016, February 25). ICS Alert (IR-ALERT-H-16-056-01) Cyber-Attack Against Ukrainian Critical Infrastructure. Retrieved June 10, 2020. 

  51. Hacquebord, F.. (2017, April 25). Two Years of Pawn Storm: Examining an Increasingly Relevant Threat. Retrieved May 3, 2017. 

  52. Mueller, R. (2018, July 13). Indictment - United States of America vs. VIKTOR BORISOVICH NETYKSHO, et al. Retrieved September 13, 2018. 

  53. MSRC Team. (2019, August 5). Corporate IoT – a path to intrusion. Retrieved August 16, 2019. 

  54. NSA, CISA, FBI, NCSC. (2021, July). Russian GRU Conducting Global Brute Force Campaign to Compromise Enterprise and Cloud Environments. Retrieved July 26, 2021. 

  55. Cybereason Nocturnus. (2019, June 25). Operation Soft Cell: A Worldwide Campaign Against Telecommunications Providers. Retrieved July 18, 2019. 

  56. Davis, S. and Caban, D. (2017, December 19). APT34 - New Targeted Attack in the Middle East. Retrieved December 20, 2017. 

  57. Unit42. (2016, May 1). Evasive Serpens Unit 42 Playbook Viewer. Retrieved February 6, 2023. 

  58. DiMaggio, J. (2016, May 17). Indian organizations targeted in Suckfly attacks. Retrieved August 3, 2016. 

  59. Elovitz, S. & Ahl, I. (2016, August 18). Know Your Enemy: New Financially-Motivated & Spear-Phishing Group. Retrieved February 26, 2018. 

  60. John, E. and Carvey, H. (2019, May 30). Unraveling the Spiderweb: Timelining ATT&CK Artifacts Used by GRIM SPIDER. Retrieved May 12, 2020. 

  61. Adair, S. (2017, February 17). Detecting and Responding to Advanced Threats within Exchange Environments. Retrieved March 20, 2017. 

  62. Vengerik, B. & Dennesen, K.. (2014, December 5). Hacking the Street? FIN4 Likely Playing the Market. Retrieved January 15, 2019. 

  63. Vengerik, B. et al.. (2014, December 5). Hacking the Street? FIN4 Likely Playing the Market. Retrieved December 17, 2018. 

  64. Vyacheslav Kopeytsev and Seongsu Park. (2021, February 25). Lazarus targets defense industry with ThreatNeedle. Retrieved October 27, 2021. 

  65. Dantzig, M. v., Schamper, E. (2019, December 19). Operation Wocao: Shining a light on one of China’s hidden hacking groups. Retrieved October 8, 2020. 

  66. McAfee® Foundstone® Professional Services and McAfee Labs™. (2011, February 10). Global Energy Cyberattacks: “Night Dragon”. Retrieved February 19, 2018. 

  67. FireEye. (2020, December 13). Highly Evasive Attacker Leverages SolarWinds Supply Chain to Compromise Multiple Global Victims With SUNBURST Backdoor. Retrieved January 4, 2021. 

  68. Nafisi, R., Lelli, A. (2021, March 4). GoldMax, GoldFinder, and Sibot: Analyzing NOBELIUM’s layered persistence. Retrieved March 8, 2021. 

  69. NCSC, CISA, FBI, NSA. (2021, May 7). Further TTPs associated with SVR cyber actors. Retrieved July 29, 2021.