Defacement: Дефейс внутренних систем
Other sub-techniques of Defacement (2)
| ID | Название |
|---|---|
| .001 | Дефейс внутренних систем |
| .002 | Дефейс внешних систем |
An adversary may deface systems internal to an organization in an attempt to intimidate or mislead users, thus discrediting the integrity of the systems. This may take the form of modifications to internal websites or server login messages, or directly to user systems with the replacement of the desktop wallpaper.(Citation: Novetta Blockbuster)(Citation: Varonis) Disturbing or offensive images may be used as a part of Internal Defacement in order to cause user discomfort, or to pressure compliance with accompanying messages. Since internally defacing systems exposes an adversary's presence, it often takes place after other intrusion goals have been accomplished.(Citation: Novetta Blockbuster Destructive Malware)
Примеры процедур |
|
| Название | Описание |
|---|---|
| Gamaredon Group |
Gamaredon Group has left taunting images and messages on the victims' desktops as proof of system access.(Citation: CERT-EE Gamaredon January 2021) |
| ShrinkLocker |
ShrinkLocker renames disk labels on victim hosts to the threat actor's email address to enable the victim to contact the threat actor for ransom negotiation.(Citation: Kaspersky ShrinkLocker 2024)(Citation: Splunk ShrinkLocker 2024) |
| Black Basta |
Black Basta has set the desktop wallpaper on victims' machines to display a ransom note.(Citation: Minerva Labs Black Basta May 2022)(Citation: BlackBerry Black Basta May 2022)(Citation: Cyble Black Basta May 2022)(Citation: Trend Micro Black Basta May 2022)(Citation: Avertium Black Basta June 2022)(Citation: NCC Group Black Basta June 2022)(Citation: Deep Instinct Black Basta August 2022)(Citation: Palo Alto Networks Black Basta August 2022)(Citation: Check Point Black Basta October 2022) |
| Diavol |
After encryption, Diavol will capture the desktop background window, set the background color to black, and change the desktop wallpaper to a newly created bitmap image with the text “All your files are encrypted! For more information see “README-FOR-DECRYPT.txt".(Citation: Fortinet Diavol July 2021) |
| BlackByte |
BlackByte left ransom notes in all directories where encryption takes place.(Citation: FBI BlackByte 2022) |
| ROADSWEEP |
ROADSWEEP has dropped ransom notes in targeted folders prior to encrypting the files.(Citation: Microsoft Albanian Government Attacks September 2022) |
| Meteor |
Meteor can change both the desktop wallpaper and the lock screen image to a custom image.(Citation: Check Point Meteor Aug 2021) |
| Lazarus Group |
Lazarus Group replaced the background wallpaper of systems with a threatening image after rendering the system unbootable with a Disk Structure Wipe.(Citation: Novetta Blockbuster Destructive Malware) |
| RansomHub |
RansomHub has placed a ransom note on comrpomised systems to warn victims and provide directions for how to retrieve data.(Citation: CISA RansomHub AUG 2024) |
| BlackCat |
BlackCat can change the desktop wallpaper on compromised hosts.(Citation: Microsoft BlackCat Jun 2022)(Citation: Sophos BlackCat Jul 2022) |
| INC Ransomware |
INC Ransomware has the ability to change the background wallpaper image to display the ransom note.(Citation: Cybereason INC Ransomware November 2023)(Citation: Secureworks GOLD IONIC April 2024) |
Контрмеры |
|
| Контрмера | Описание |
|---|---|
| Defacement Mitigation |
Implementing best practices for websites such as defending against Exploit Public-Facing Application (Citation: OWASP Top 10 2017). Consider implementing IT disaster recovery plans that contain procedures for taking regular data backups that can be used to restore organizational data. (Ready.gov IT DRP) Ensure backups are stored off system and is protected from common methods adversaries may use to gain access and destroy the backups to prevent recovery. |
| Data Backup |
Data Backup involves taking and securely storing backups of data from end-user systems and critical servers. It ensures that data remains available in the event of system compromise, ransomware attacks, or other disruptions. Backup processes should include hardening backup systems, implementing secure storage solutions, and keeping backups isolated from the corporate network to prevent compromise during active incidents. This mitigation can be implemented through the following measures: Regular Backup Scheduling: - Use Case: Ensure timely and consistent backups of critical data. - Implementation: Schedule daily incremental backups and weekly full backups for all critical servers and systems. Immutable Backups: - Use Case: Protect backups from modification or deletion, even by attackers. - Implementation: Use write-once-read-many (WORM) storage for backups, preventing ransomware from encrypting or deleting backup files. Backup Encryption: - Use Case: Protect data integrity and confidentiality during transit and storage. - Implementation: Encrypt backups using strong encryption protocols (e.g., AES-256) before storing them in local, cloud, or remote locations. Offsite Backup Storage: - Use Case: Ensure data availability during physical disasters or onsite breaches. - Implementation: Use cloud-based solutions like AWS S3, Azure Backup, or physical offsite storage to maintain a copy of critical data. Backup Testing: - Use Case: Validate backup integrity and ensure recoverability. - Implementation: Regularly test data restoration processes to ensure that backups are not corrupted and can be recovered quickly. |
Обнаружение
Monitor internal and websites for unplanned content changes. Monitor application logs for abnormal behavior that may indicate attempted or successful exploitation. Use deep packet inspection to look for artifacts of common exploit traffic, such as SQL injection. Web Application Firewalls may detect improper inputs attempting exploitation.
Ссылки
- Ready.gov. (n.d.). IT Disaster Recovery Plan. Retrieved March 15, 2019.
- Novetta Threat Research Group. (2016, February 24). Operation Blockbuster: Unraveling the Long Thread of the Sony Attack. Retrieved February 25, 2016.
- Novetta Threat Research Group. (2016, February 24). Operation Blockbuster: Destructive Malware Report. Retrieved November 17, 2024.
- Jason Hill. (2023, February 8). VMware ESXi in the Line of Ransomware Fire. Retrieved March 26, 2025.
- CERT-EE. (2021, January 27). Gamaredon Infection: From Dropper to Entry. Retrieved February 17, 2022.
- Splunk Threat Research Team , Teoderick Contreras. (2024, September 5). ShrinkLocker Malware: Abusing BitLocker to Lock Your Data. Retrieved December 7, 2024.
- Cristian Souza, Eduardo Ovalle, Ashley Muñoz, & Christopher Zachor. (2024, May 23). ShrinkLocker: Turning BitLocker into ransomware. Retrieved December 7, 2024.
- Zargarov, N. (2022, May 2). New Black Basta Ransomware Hijacks Windows Fax Service. Retrieved March 7, 2023.
- Vilkomir-Preisman, S. (2022, August 18). Beating Black Basta Ransomware. Retrieved March 8, 2023.
- Inman, R. and Gurney, P. (2022, June 6). Shining the Light on Black Basta. Retrieved March 8, 2023.
- Gonzalez, I., Chavez I., et al. (2022, May 9). Examining the Black Basta Ransomware’s Infection Routine. Retrieved March 7, 2023.
- Elsad, A. (2022, August 25). Threat Assessment: Black Basta Ransomware. Retrieved March 8, 2023.
- Cyble. (2022, May 6). New ransomware variant targeting high-value organizations. Retrieved November 17, 2024.
- Check Point. (2022, October 20). BLACK BASTA AND THE UNNOTICED DELIVERY. Retrieved March 8, 2023.
- Ballmer, D. (2022, May 6). Black Basta: Rebrand of Conti or Something New?. Retrieved March 7, 2023.
- Avertium. (2022, June 1). AN IN-DEPTH LOOK AT BLACK BASTA RANSOMWARE. Retrieved March 7, 2023.
- Neeamni, D., Rubinfeld, A.. (2021, July 1). Diavol - A New Ransomware Used By Wizard Spider?. Retrieved November 12, 2021.
- US Federal Bureau of Investigation & US Secret Service. (2022, February 11). Indicators of Compromise Associated with BlackByte Ransomware. Retrieved December 16, 2024.
- MSTIC. (2022, September 8). Microsoft investigates Iranian attacks against the Albanian government. Retrieved August 6, 2024.
- Check Point Research Team. (2021, August 14). Indra - Hackers Behind Recent Attacks on Iran. Retrieved February 17, 2022.
- CISA et al. (2024, August 29). #StopRansomware: RansomHub Ransomware. Retrieved March 17, 2025.
- Microsoft Defender Threat Intelligence. (2022, June 13). The many lives of BlackCat ransomware. Retrieved December 20, 2022.
- Brandt, Andrew. (2022, July 14). BlackCat ransomware attacks not merely a byproduct of bad luck. Retrieved December 20, 2022.
- Cybereason Security Research Team. (2023, November 20). Threat Alert: INC Ransomware. Retrieved June 5, 2024.
- Counter Threat Unit Research Team. (2024, April 15). GOLD IONIC DEPLOYS INC RANSOMWARE. Retrieved June 5, 2024.
Связанные риски
Каталоги
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