Detections

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

12,583 detections

Detects a single application or service principal performing a password reset, a license assignment, and a privileged role grant within a one-hour window. This sequence matches Storm-3119 admin-panel abuse of a compromised tenant client secret through an app-only flow in Microsoft 365 or Entra ID.
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Tim Peck@timpeck
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Detections.ai Community
15 days ago
4016
Detects authentication to the MFT platform where multi-factor was not initiated.
The extractor records MFA_INITIATED separately from LOGIN, so a login with no
corresponding MFA event indicates either an account exempt from the policy or a
path around it — on an internet-facing transfer platform, both matter.

Onboarding: GOANYWHERE-MFT is ingested via Syslog (Bloo extractor 850).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=authentication where sourcename='GOANYWHERE-MFT' and action='LOGIN'
| groupby user, srcip, authproto
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
103
Detects administrative login to the FortiWeb console from an address without prior
history. Console access permits policy change and signature control, so compromise
of the WAF administrator is equivalent to removing the WAF for every application
behind it.

Onboarding: FORTIWEB is ingested via Syslog (CEF) (Bloo extractor 115).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=authentication where sourcename='FORTIWEB' and action='LOGIN'
| groupby user, srcip
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
103
Detects OAuth credential activity on GitHub. Tokens bypass password and multi-factor
controls and persist until revoked, making them the standard persistence mechanism
on the platform. A token created on a compromised account continues to work long
after the password is reset.

Onboarding: GITHUB is ingested via GitHub connector (Bloo extractor 870).
Integration guide: https://bloo.io/docs/hypercloud/github-connector

BQL (Bloo Query Language):

stream=iam where sourcename='GITHUB' and action='CONFIGURATION_CHANGED'
| groupby target, role, accesstype, operationtype, authtokenhash
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
003
Detects the creation of WordPress administrator accounts using MySQL or WP-CLI command-line tools on hosts, specifically looking for specific username prefixes or email domains associated with suspicious activities.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
8 days ago
302
Detects successful non-interactive sign-ins by Entra ID service principals from an IP address and location never seen in the prior 14 days, helping to identify potentially compromised application credentials used from unfamiliar locations.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
8 days ago
002
Detects potential Linux privilege escalation and persistence activities by monitoring for the creation of persistence scripts in post_boot.d, modifications to the sudoers.template file appending NOPASSWD, or system configuration rebuilds shortly after sudoers template changes.
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Arnold Chan@slaz
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Hunters
11 days ago
005
Correlates a high-risk or compromised Microsoft Entra sign-in event with a subsequent device registration (Add device or Register device) performed by the same user account within a 3-hour window.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
4 days ago
000
Users who received a delivered phishing email and then signed in from an IP not seen for them in the prior 30 days within 24 hours. Hunting query, not an alert.
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Goksel Atakan@gokselatakan
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Detections.ai Community
14 days ago
409
Detects service principal sign-ins involving known compromised application IDs associated with the ConnectWise cloud backup and management supply-chain attack.
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Lacey Cochrane@NullVectorX
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XQL Threat Forge
11 days ago
604
Detects external inbound FortiGate Fabric Management Protocol (FGFM) traffic on TCP port 541 followed by a FortiGateCloud administrative configuration download, backup, or running-config event on the same FortiGate device within a one-hour window, potentially indicating unauthorized configuration access or device compromise.
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Arnold Chan@slaz
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Detections.ai Community
12 days ago
006
Detects an Entra 'Add device' event within 2 minutes after a successful sign-in from an IP never seen for that user in the lookback window, and where the registration originates from that same new IP (rogue device persistence after token replay).
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Arnold Chan@slaz
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Detections.ai Community
19 days ago
13041
Detects registry modifications that tamper with internal Windows tools settings, commonly used by malware to disable security features or system tools
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
12 days ago
406
Detects modification of HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\User Shell Folders\\Local AppData to a Windows kernel object namespace path such as \\.\globalroot\BaseNamedObjects\Restricted. The LegacyHive 0-day exploits this registry pivot to redirect UsrClass.dat loading via the Windows User Profile Service, achieving privilege escalation on all supported desktop and server versions with the July 2026 patch applied. No legitimate application redirects a user shell folder to a kernel namespace path.
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Georg Lauenstein@gsec
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SecOps Signals
13 days ago
107
Detects the creation or modification of Microsoft 365 Exchange inbox rules that exhibit characteristics of malicious behavior, such as using trivial or blank names, moving items to rarely-monitored folders (e.g., 'Conversation History', 'RSS Feeds'), or containing keywords related to phishing, credential harvesting, or financial fraud.
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Lacey Cochrane@NullVectorX
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XQL Threat Forge
26 days ago
400870
Detects potential Linux privilege escalation and persistence activities by monitoring for the creation of persistence scripts in post_boot.d, modifications to the sudoers.template file appending NOPASSWD, or system configuration rebuilds shortly after sudoers template changes.
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Arnold Chan@slaz
Defender - KQL
11 days ago
104
Detects potential web shell activity where a web or application server process (such as IIS, Apache, Nginx, or Tomcat) writes a script file (e.g., .aspx, .jsp, .php) into a web-accessible directory, followed shortly by spawning a command-line shell or utility process.
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Arnold Chan@slaz
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Detection & Hunting Community
11 days ago
004
Detects potential web shell activity where a web or application server process (such as IIS, Apache, Nginx, or Tomcat) writes a script file (e.g., .aspx, .jsp, .php) into a web-accessible directory, followed shortly by spawning a command-line shell or utility process.
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Arnold Chan@slaz
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Hunters
11 days ago
104
Hunts for sqlservr.exe spawning command shells or system utilities, a pattern consistent with xp_cmdshell abuse. It also flags later steps from a public intrusion write-up: certutil decoding, SAM, SYSTEM or SECURITY hive saves and local account or group changes.

Results are grouped per device and day and ranked by stage count. Rows can also appear without a SQL parent when two later stages occur on the same device and day.

Triage: Some jobs use xp_cmdshell legitimately. Review the command line and the account. Hunting query, not an alert.

Limitations: Activity inside the SQL process with no child process is not visible. Renamed tools, obfuscation and privilege escalation tools are not covered. Needs Defender for Endpoint on the SQL servers.
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Goksel Atakan@gokselatakan
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Detections.ai Community
18 days ago
6128
Detects a potential webshell being executed on linux server. Follow process tree of shell commands.
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Richard Kohler@djrk01
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Detections.ai Community
15 days ago
5011
Detects a new agent account in Zendesk. An agent can read customer conversations and
correspond with customers under the organisation's name — which makes an
unauthorised agent account both a data exposure and a channel for defrauding the
organisation's own customers.

Onboarding: ZENDESK is ingested via NXLog (Bloo extractor 831).
Integration guide: https://bloo.io/docs/hypercloud/zendesk-connector

BQL (Bloo Query Language):

stream=iam where sourcename='ZENDESK' and action='USER_ADDED'
| groupby user, targetuser, role
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
102
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