Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

577 detections

Instead of running several queries separately, you can also use a comprehensive query that checks for multiple signs of ransomware activity to identify affected devices. The following consolidated query:
Looks for both relatively concrete and subtle signs of ransomware activity
Weighs the presence of these signs
Identifies devices with a higher chance of being targets of ransomware
When run, this consolidated query returns a list of devices that have exhibited multiple signs of attack. The count of each type of ransomware activity is also shown.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
4054
'This query could identify critical user management operations like user registration(Microsoft Entra ID Multi-Factor Authentication & self-service password reset (SSPR)) authentication by admin account followed by attempts to stop System Restore activity. Stopping system restore prevents from recovering data by going back to a restore point. The operations could be an indication of attackers trying to maintain persistence, move laterally with attempts to stop system restore point that could point to a potential ransomware attack.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
2050
This query identifies common processes run by ransomware
malware to destroy volume shadow copies or clean free
space on a drive to prevent a file from being recovered
post-encryption. To reduce false positives, results are
filtered to only actions taken when the initiating
process was launched from a suspicious directory. If
you don't mind false positives, consider removing the
last where clause.
Special thanks to Captain for additional inputs
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0047
Shadow Copies deletion using operating systems utilities
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
007
Detects potential Dtrack RAT activity via specific process patterns
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
006
Detects the deletion of backups or system state backups via "wbadmin.exe".
This technique is used by numerous ransomware families and actors.
This may only be successful on server platforms that have Windows Backup enabled.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
006
Shadow Copies deletion using operating systems utilities via PowerShell
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
006
Detects the execution of the builtin "copy" command that targets a shadow copy (sometimes used to copy registry hives that are in use)
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
006
Directly prior to deploying Macaw ransomware in an organization, the attacker will run several commands designed to disable security tools and system recovery tools.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0033
This query was originally published in the threat analytics report, Ransomware continues to hit healthcare, critical services.
It finds all user accounts that have logged on to an endpoint affected by Cobalt Strike, a penetration tool.
Assume that all credentials on endpoints affected by Cobalt Strike were available to attackers and that all associated accounts are compromised. Note that attackers will not only dump credentials for accounts that have logged on to interactive or RDP sessions, but will also dump cached credentials and passwords for service accounts and scheduled tasks that are stored in the LSA Secrets section of the registry.
Reference - https://attack.mitre.org/software/S0154/
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0032
Detects the modification of the registry to disable a system restore on the computer
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
005
Detects specific process characteristics of Maze ransomware word document droppers
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
005
'This detection looks for command line parameters associated with the use of Sysinternals sdelete (https://docs.microsoft.com/sysinternals/downloads/sdelete) to delete multiple files on a host's C drive.
A threat actor may re-name the tool to avoid detection and then use it for destructive attacks on a host.
This detection uses the ASIM imProcess parser, this will need to be deployed before use - https://docs.microsoft.com/azure/sentinel/normalization'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0028
Find attempts to stop System Restore and.
Prevent the system from creating restore points.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1026
This query identifies use of wmic.exe to delete shadow copy snapshots prior to encryption.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0025
Prior to deploying Macaw ransomware in an organization, the adversary will disable several tools and functions in order to inhibit later recovery efforts.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0023
Deletes Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
004
Detects specific process characteristics of Maze ransomware word document droppers
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
004
Detects WannaCry ransomware activity
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
004
Detects the recovery of files from backups via "wbadmin.exe".
Attackers can restore sensitive files such as NTDS.DIT or Registry Hives from backups in order to potentially extract credentials.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
004
Detects deletion of Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
004
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