Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects execution of the XMRig Monero cryptominer or a miner
launched with XMRig-specific pool and tuning arguments. In the AhsayCBS
exploitation campaign attackers dropped XMRig onto compromised backup
servers to hijack CPU resources for Monero mining, severely degrading
server performance. Detection keys on XMRig binary names and the mining
command-line grammar (stratum pool URLs, donate-level and thread-hint flags).
launched with XMRig-specific pool and tuning arguments. In the AhsayCBS
exploitation campaign attackers dropped XMRig onto compromised backup
servers to hijack CPU resources for Monero mining, severely degrading
server performance. Detection keys on XMRig binary names and the mining
command-line grammar (stratum pool URLs, donate-level and thread-hint flags).
Detects wmic being used to add a Microsoft Defender exclusion for a fake "Microsoft\Windows Defender" installation directory. HoneyMyte (Mustang Panda) runs this command via the MSFT_MpPreference WMI class before dropping the CoolClient sideloader (defender.exe) and libngs.dll into that duplicated folder, ensuring the malware is never scanned. The legitimate Windows Defender path does not contain a "Microsoft\" subfolder, making this exclusion target distinctive.
Detects when the IIS worker process (w3wp.exe) spawns common system and network discovery utilities such as whoami, ipconfig, systeminfo, net, and others, which may indicate web shell activity or post-exploitation discovery.
Detects the default scheduled task activity of the hacktool Defendnot, which is used to disable Windows Defender Security.
It abuses Microsoft's undocumented WSC API to register itself as a fake antivirus product, allowing it to disable Windows Defender.
During installation, Defendnot creates a scheduled task named 'defendnot' with the argument '--from-autorun' for persistence.
It abuses Microsoft's undocumented WSC API to register itself as a fake antivirus product, allowing it to disable Windows Defender.
During installation, Defendnot creates a scheduled task named 'defendnot' with the argument '--from-autorun' for persistence.
Detects execution of Defendnot installation via PowerShell one-liner that downloads and executes the Defendnot script from a remote URL.
Defendnot is a hacktool that abuses Microsoft's undocumented WSC API to disable Windows Defender by registering itself as a fake antivirus product.
Defendnot is a hacktool that abuses Microsoft's undocumented WSC API to disable Windows Defender by registering itself as a fake antivirus product.
IOC sweep for ARTEX campaign indicators: C2 host, nine proxy IPs, xcai.pro and its subdomains, and the CLAUDE.md URL across Defender, CEF/firewall, DNS and Entra sign-in telemetry. Domains match on exact host or subdomain only, connection types are limited to real connection events, and sign-ins are limited to successes and credential failures.
Detects the execution of ntdsutil.exe with arguments to create an Install from Media (IFM) database backup, preceded shortly by a Remote Interactive logon (RDP) from a remote IP source, which can indicate adversary activity attempting to dump Active Directory credentials.
Detects the execution of ntdsutil.exe with arguments to create an Install from Media (IFM) database backup, preceded shortly by a Remote Interactive logon (RDP) from a remote IP source, which can indicate adversary activity attempting to dump Active Directory credentials.
Detects the execution of ntdsutil.exe with arguments to create an Install from Media (IFM) database backup, preceded shortly by a Remote Interactive logon (RDP) from a remote IP source, which can indicate adversary activity attempting to dump Active Directory credentials.
Sweeps network, process command-line and URL-click telemetry for the Kimsuky payload C2 domain and its subdomains using an anchored match, which avoids lookalike or suffix-matching domains.
The following analytic detects the creation of files associated with the NirSoft tool bundles on Windows endpoints.
NirSoft is a well-known provider of free, portable utilities that can be used for various system and network tasks. However, threat actors often leverage these tools for malicious purposes, such as credential harvesting, network reconnaissance, and data exfiltration.
The detection focuses on the creation of specific NirSoft tool bundle files, which may indicate that an attacker is preparing to use these utilities on a compromised system.
Security teams should investigate any instances of these files being created, especially if they are found in unexpected locations or on systems that should not be using such tools.
NirSoft is a well-known provider of free, portable utilities that can be used for various system and network tasks. However, threat actors often leverage these tools for malicious purposes, such as credential harvesting, network reconnaissance, and data exfiltration.
The detection focuses on the creation of specific NirSoft tool bundle files, which may indicate that an attacker is preparing to use these utilities on a compromised system.
Security teams should investigate any instances of these files being created, especially if they are found in unexpected locations or on systems that should not be using such tools.
Detects the creation of a new Windows service (EventCode 7045) where the service binary path (ImagePath) points to the ProgramData directory, with exclusions for known legitimate paths such as Windows Defender, Package Cache, and Chocolatey.
Detects the creation of the "PSScriptPolicyTest" PowerShell script by an uncommon process. This file is usually generated by Microsoft Powershell to test against Applocker.
Detects hosts exhibiting multiple persistence mechanisms (Run keys, Scheduled Tasks, and Windows Services) within a short timeframe, indicating potential adversary persistence setup.
Detects suspicious use of Node.js package managers running malicious lifecycle hooks, installing rogue dependencies, or invoking script execution during package installation.
Detects dropped files with double extensions, which is often used by malware as a method to abuse the fact that Windows hide default extensions by default.
Detects the AdFection multi-stage infection chain where a device sequentially contacts advertising infrastructure, Candiru validator servers, exploit servers, and Candiru Command and Control domains within a short time window.
Detects an npm or pip package installation process spawning a script
interpreter or living-off-the-land binary (powershell, cmd, certutil, bitsadmin, curl,
wget, bash, sh) as a child process. CrowdStrike's 2026 Threat Hunting Report found
adversaries increasingly embed malicious setup/install scripts inside open-source packages
uploaded to npm and PyPI; these scripts execute automatically the moment the package is
written to disk during npm install / pip install, unless intercepted before execution. A
package manager process spawning a scripting engine or download utility immediately after
install is a strong indicator of an embedded malicious postinstall/setup script rather than
a normal build step.
interpreter or living-off-the-land binary (powershell, cmd, certutil, bitsadmin, curl,
wget, bash, sh) as a child process. CrowdStrike's 2026 Threat Hunting Report found
adversaries increasingly embed malicious setup/install scripts inside open-source packages
uploaded to npm and PyPI; these scripts execute automatically the moment the package is
written to disk during npm install / pip install, unless intercepted before execution. A
package manager process spawning a scripting engine or download utility immediately after
install is a strong indicator of an embedded malicious postinstall/setup script rather than
a normal build step.
Detects one user triggering DLP repeatedly in a short window. A single violation is
usually a mistake; a pattern is either someone systematically working around the
control or an attacker testing which channels are permitted before using the one
that is.
Onboarding: TRELLIX-DLP is ingested via Syslog (XML) (Bloo extractor 805).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=threat where sourcename='TRELLIX-DLP'
and action in ('THREAT_DETECTED', 'THREAT_BLOCKED')
| duration 1h
| groupby user, srcip
| select user, srcip, count(*) as cnt
| having cnt > 10
usually a mistake; a pattern is either someone systematically working around the
control or an attacker testing which channels are permitted before using the one
that is.
Onboarding: TRELLIX-DLP is ingested via Syslog (XML) (Bloo extractor 805).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=threat where sourcename='TRELLIX-DLP'
and action in ('THREAT_DETECTED', 'THREAT_BLOCKED')
| duration 1h
| groupby user, srcip
| select user, srcip, count(*) as cnt
| having cnt > 10
Detects Kerberos service ticket requests observed in network traffic analysis.
Seeing this on the wire rather than at the domain controller catches harvesting even
where domain controller auditing is incomplete, and it gives the source address
directly rather than requiring correlation.
Onboarding: NTA is ingested via Network Traffic Analysis (Bloo extractor 717).
Integration guide: https://bloo.io/docs/integrations
BQL (Bloo Query Language):
stream=nta-connection where sourcename='NTA'
and action='KERBEROS_SERVICE_TICKET_REQUESTED'
| duration 1h
| groupby srcip, dstip
| select srcip, dstip, count(*) as cnt
| having cnt > 20
Seeing this on the wire rather than at the domain controller catches harvesting even
where domain controller auditing is incomplete, and it gives the source address
directly rather than requiring correlation.
Onboarding: NTA is ingested via Network Traffic Analysis (Bloo extractor 717).
Integration guide: https://bloo.io/docs/integrations
BQL (Bloo Query Language):
stream=nta-connection where sourcename='NTA'
and action='KERBEROS_SERVICE_TICKET_REQUESTED'
| duration 1h
| groupby srcip, dstip
| select srcip, dstip, count(*) as cnt
| having cnt > 20
Detects deletion of a role in Centrify for Windows. Removing a role can strip access
from legitimate administrators during an incident, and it also erases the record of
who was entitled to what — which complicates reconstructing the access position
afterwards.
Onboarding: CENTRIFY-AUDITTRAIL-WINDOWS is ingested via Syslog (KV) (Bloo extractor 821).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=iam where sourcename='CENTRIFY-AUDITTRAIL-WINDOWS' and action='ROLE_DELETED'
| groupby user, role, targetuser, domain
from legitimate administrators during an incident, and it also erases the record of
who was entitled to what — which complicates reconstructing the access position
afterwards.
Onboarding: CENTRIFY-AUDITTRAIL-WINDOWS is ingested via Syslog (KV) (Bloo extractor 821).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=iam where sourcename='CENTRIFY-AUDITTRAIL-WINDOWS' and action='ROLE_DELETED'
| groupby user, role, targetuser, domain
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