Нарушение структуры диска
Adversaries may corrupt or wipe the disk data structures on hard drive necessary to boot systems; targeting specific critical systems as well as a large number of systems in a network to interrupt availability to system and network resources. Adversaries may attempt to render the system unable to boot by overwriting critical data located in structures such as the master boot record (MBR) or partition table.(Citation: Symantec Shamoon 2012)(Citation: FireEye Shamoon Nov 2016)(Citation: Palo Alto Shamoon Nov 2016)(Citation: Kaspersky StoneDrill 2017)(Citation: Unit 42 Shamoon3 2018) The data contained in disk structures may include the initial executable code for loading an operating system or the location of the file system partitions on disk. If this information is not present, the computer will not be able to load an operating system during the boot process, leaving the computer unavailable. Disk Structure Wipe may be performed in isolation, or along with Disk Content Wipe if all sectors of a disk are wiped. To maximize impact on the target organization, malware designed for destroying disk structures may have worm-like features to propagate across a network by leveraging other techniques like Valid Accounts, OS Credential Dumping, and Windows Admin Shares.(Citation: Symantec Shamoon 2012)(Citation: FireEye Shamoon Nov 2016)(Citation: Palo Alto Shamoon Nov 2016)(Citation: Kaspersky StoneDrill 2017)
Контрмеры |
|
| Контрмера | Описание |
|---|---|
| Data Backup |
Take and store data backups from end user systems and critical servers. Ensure backup and storage systems are hardened and kept separate from the corporate network to prevent compromise. |
| Data Destruction Mitigation |
Consider implementing IT disaster recovery plans that contain procedures for taking regular data backups that can be used to restore organizational data.(Citation: 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. Identify potentially malicious software and audit and/or block it by using whitelisting(Citation: Beechey 2010) tools, like AppLocker,(Citation: Windows Commands JPCERT)(Citation: NSA MS AppLocker) or Software Restriction Policies(Citation: Corio 2008) where appropriate.(Citation: TechNet Applocker vs SRP) |
Обнаружение
Look for attempts to read/write to sensitive locations like the master boot record and the disk partition table. Monitor for unusual kernel driver installation activity.
Ссылки
- Falcone, R. (2018, December 13). Shamoon 3 Targets Oil and Gas Organization. Retrieved March 14, 2019.
- Kaspersky Lab. (2017, March 7). From Shamoon to StoneDrill: Wipers attacking Saudi organizations and beyond. Retrieved March 14, 2019.
- Falcone, R.. (2016, November 30). Shamoon 2: Return of the Disttrack Wiper. Retrieved January 11, 2017.
- FireEye. (2016, November 30). FireEye Responds to Wave of Destructive Cyber Attacks in Gulf Region. Retrieved January 11, 2017.
- Symantec. (2012, August 16). The Shamoon Attacks. Retrieved March 14, 2019.
- Ready.gov. (n.d.). IT Disaster Recovery Plan. Retrieved March 15, 2019.
Связанные риски
Каталоги
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