Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects the presence of the unsigned 'OrionQuests-Setup.exe' file, which is a deceptive .NET installer associated with the Kimsuky (APT-C-55) threat actor, used to distribute the Stella_Gary backdoor. The rule looks for specific strings associated with .NET binaries and shortcut (LNK) file interaction, while excluding signed executables to reduce noise.
Detects known Koktevrat Android RAT campaign APK artifacts by published SHA-256 hashes and associated package name string
This rule detects the presence or execution of a file named 'GlobalProtect.exe' within the Palo Alto GlobalProtect directory. It focuses on identifying potentially masqueraded or unauthorized binaries by monitoring file events and associated process execution. This pattern is commonly used by attackers to disguise malicious files as legitimate security software to evade detection.
Matches known Phantom Stealer MaaS infostealer sample hashes
Detects ClickFix-style social engineering attacks where users are prompted to copy and execute malicious commands in a shell environment. The rule triggers on process execution of terminal or shell binaries (zsh, sh, cmd.exe, powershell.exe) containing indicators of obfuscated execution or remote code downloading, such as piped shell commands (curl | sh/zsh) or PowerShell encoded command execution.
Matches known SilverFox malware payload samples by SHA256 hash
Detects instances where multiple executables named 'eld0.exe', 'eld1.exe', or 'eld2.exe' are executed on the same device within a short time window, all containing a 'CID=' argument in the command line. This behavior is often indicative of automated deployment, staging, or modular malware execution patterns.
Detects a sequence of events where a user visits a Cloudflare Pages URL (*.pages.dev) and shortly after, a suspicious command (mshta, powershell, or curl) is executed. This pattern is consistent with the UNC5142 threat actor's TTP of using social engineering lures hosted on Cloudflare Pages to trick users into running malicious commands.
This rule monitors for email events where the email is flagged for suspicious properties (SPF/DKIM/DMARC failure, threat categorization) and includes potentially malicious attachments or URLs. It then correlates these suspicious emails with subsequent process execution events on the recipient's endpoint within a 30-minute window, identifying a potential successful execution of a phishing payload.
Detects the invocation of the AppInstaller executable to install .msix packages, often used in software installation or malicious delivery scenarios involving application deployment.
KQL Query from file: clickfix-mshtapowershell-run-dialog-exec-with-download-cradle-after-captcha-lu.kql
Detects the Silver Fox HVNC malware dropper initiating browser instances via the command line to access known malicious C2 domains or infrastructure. The rule specifically monitors for known malicious binaries (UpdateAssistant.exe, AppUpdateHelper.exe, SysMaintenance.exe) launching browsers with suspicious command-line parameters associated with this campaign.
This rule detects potentially malicious keylogging activity by identifying binaries named UpdateAssistant.exe or AppUpdateHelper.exe that import keylogging-related APIs (GetAsyncKeyState/GetKeyboardState). To minimize false positives, the rule correlates these findings with suspicious metadata such as unsigned binaries, untrusted signers, or execution from non-standard directories like AppData subfolders or Temp.
This rule detects potential phishing activity by correlating email delivery of Excel attachments with subsequent network connections to known malicious domains initiated by common browser or office processes. It identifies cases where a user may have opened a suspicious Excel file and initiated an outbound network request to a flagged domain within 24 hours of receiving the email.
This rule detects potentially malicious activity involving the modification of Excel macro security settings (specifically VBAWarnings or AccessVBOM) or the creation of autorun.inf files on removable drives. It identifies these behaviors when they coincide with the execution of Synaptics.exe within a 30-minute window, suggesting a potential correlation between local administrative tasks and malicious document-based payloads or portable drive staging.
This rule detects potential lateral movement activity by identifying executable or script files being written to administrative shares (C$ or ADMIN$) followed by the execution of a file with the same name on the destination device within 15 minutes. It includes logic to filter out known deployment/patch management service accounts and file names to reduce noise.
Detects the installation or execution of known remote access tools (RMM) from suspicious parent processes (browsers, archives) or from user-writable directories (Temp, Downloads). This behavior is characteristic of initial access and staging activities performed by ransomware operators or Initial Access Brokers (IABs). The rule excludes known IT-managed deployment paths and signed binaries used by the organization.
Detects the use of the 'tar' utility with the '--use-compress-program' flag, where the compression program specified is not a standard system compression tool. This pattern is commonly used by attackers to execute arbitrary payloads when tar extracts malicious archives.
Detects execution or file presence of known malicious files based on a pre-defined list of SHA256 hashes associated with known threat activity.
Detects the download of ZIP files with filenames matching known phishing patterns associated with NFe (Nota Fiscal Eletrônica) campaigns, correlated with access to specific malicious or suspicious download URLs within a 15-minute window.
Detects the download of ZIP files with filenames matching known phishing patterns associated with NFe (Nota Fiscal Eletrônica) campaigns, correlated with access to specific malicious or suspicious download URLs within a 15-minute window.
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