Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
1,050 detections
Filters
Last updated
All Time
Detection languages
448
250
202
51
27
Contributors
410
155
118
94
48
Categories
628
580
246
179
128
Platforms
988
67
34
20
13
Products / Services
192
142
69
46
28
MITRE Techniques
18,123
15,639
12,581
8,394
6,215
1,050
CVEs
1
IDS Classtypes
7
IDS Protocols
3
2
1
DEVMAN Ransomware Detection
KQL Query from file: DefenderXDR - Devman Ransomware Detection
KQL Query
Detects the execution of DragonForce ransomware binary or its associated event log clearing batch script, as observed in attacks leveraging SimpleHelp vulnerabilities.
KQL Query
KQL Query
KQL Query
Detects a highly relevant Antivirus alert that reports ransomware.
This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
Detects the execution of "gpg.exe" from uncommon location. Often used by ransomware and loaders to decrypt/encrypt data.
Detects WannaCry ransomware activity
Detects multiple file rename or delete events occurrence within a specified period of time by a same user (these events may signalize about ransomware activity).
Detects a specific command used by the Conti ransomware group
Intent:
- Use MTP capability to look for insider threat potential risk indicators
- Indicators would then serve as the building block for insider threat risk modeling in subsequent tools
Definition of Insider Threat:
"The potential for an individual who has or had authorized access to an organization's assets to use their access, either maliciously or unintentionally, to act in a way that could negatively affect the organization."
This collection of queries describes the different indicators that could be used to model and look for patterns suggesting an increased risk of an individual becoming a potential insider threat.
Note: no single indicator should be used as a lone determinant of insider threat activity, but should be part of an overall program to understand the increased risk to your organization's critical assets. This in turn is used to feed an investigation by a formal insider threat program to look at the context associated with the whole person to understand the implication of a set of indicators.
- Use MTP capability to look for insider threat potential risk indicators
- Indicators would then serve as the building block for insider threat risk modeling in subsequent tools
Definition of Insider Threat:
"The potential for an individual who has or had authorized access to an organization's assets to use their access, either maliciously or unintentionally, to act in a way that could negatively affect the organization."
This collection of queries describes the different indicators that could be used to model and look for patterns suggesting an increased risk of an individual becoming a potential insider threat.
Note: no single indicator should be used as a lone determinant of insider threat activity, but should be part of an overall program to understand the increased risk to your organization's critical assets. This in turn is used to feed an investigation by a formal insider threat program to look at the context associated with the whole person to understand the implication of a set of indicators.
Detect access to files and shares with names and extensions used by BlueSky ransomware which could indicate a current or previous encryption attempt.
Detects suspicious addition to BitLocker related registry keys via the reg.exe utility
Detects suspicious addition to BitLocker related registry keys via the reg.exe utility
'This query looks for Microsoft Defender AV detections related to Europium actor.
In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government '
In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government '
'This query looks for Microsoft Defender AV detections related to Hive Ransomware.
In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'
In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'
This rule detects when the ASR rule AsrRansomwareBlocked or AsrRansomwareAudited is triggered.
No alert is generated by default. This could be the start of a ransomware attack.
Additional information available by Microsoft:
https://docs.microsoft.com/microsoft-365/security/defender-endpoint/attack-surface-reduction-rules-reference?view=o365-worldwide#use-advanced-protection-against-ransomware
No alert is generated by default. This could be the start of a ransomware attack.
Additional information available by Microsoft:
https://docs.microsoft.com/microsoft-365/security/defender-endpoint/attack-surface-reduction-rules-reference?view=o365-worldwide#use-advanced-protection-against-ransomware
This query was originally published in the threat analytics report, EvilQuest signals the rise of Mac ransomware.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can detect events associated with the launch of the EvilQuest executable, questd, from the shell.
Other queries related to EvilQuest ransomware can be found under the See also section below.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can detect events associated with the launch of the EvilQuest executable, questd, from the shell.
Other queries related to EvilQuest ransomware can be found under the See also section below.
'This query looks for Microsoft Defender AV detections related to Dev-0530 actors.
In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'
In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'
Page 28 of 50