SigmaHQ Detections
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6,797 detections
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Detects the use of the Pingback backdoor, which establishes an ICMP tunnel for command and control (C2) communications. The rule specifically looks for the creation of a process where the parent image ends with 'updata.exe' and the command line contains 'config', 'msdtc', 'start', and 'auto'. This combination of parent process and command-line arguments is indicative of the Pingback backdoor's activity as described in the Trustwave report.
Detects various suspicious activities associated with the HAFNIUM threat group targeting Microsoft Exchange servers. This includes attempts to hide files using `attrib`, scheduled task creation for persistence, execution of an unusual Opera browser, shadow copy enumeration, and data staging/exfiltration using `makecab`, `7zip`, and `rundll32` for minidump creation.
Detects the execution of concatenated commands via "cmd.exe" that are characteristic of Pikabot malware. Pikabot often uses "cmd /c" to combine commands like "curl" or "wget" for downloading payloads, "ping" and "timeout" for delays, and "Rundll32" for executing malicious DLLs. The rule specifically looks for the combination of these commands, indicating potential Pikabot infection.
Detects scheduled task deletion events. Scheduled tasks are likely to be deleted if not used for persistence. Malicious Software often creates tasks directly under the root node e.g. \TASKNAME
Detects the execution of the 'curl.exe' process with specific flags that indicate an attempt to upload or exfiltrate data. This includes flags like '--form', '--upload-file', '--data', and variations of '--data-' (e.g., '--data-ascii', '--data-binary', '--data-raw', '--data-urlencode'), as well as shorthand flags like '-F', '-T', and '-d'. The rule filters out connections to localhost to reduce false positives.
Detects remote RPC calls to the ITaskSchedulerService interface, specifically focusing on operations that create or execute scheduled tasks. This behavior is commonly associated with lateral movement and persistence techniques. The rule leverages an RPC Firewall to monitor these specific RPC calls.
This rule detects the creation of virtual machines or the deployment of resources within an Azure environment. Monitoring these activities can help identify unauthorized resource provisioning, which could indicate an attacker establishing persistence, escalating privileges, or preparing for further malicious actions. The rule specifically looks for 'write' operations related to virtual machines and resource deployments in Azure activity logs.
Detects when a user account is created and subsequently deleted within a short period. This behavior can indicate an adversary attempting to establish temporary persistence, perform actions, and then remove traces of their activity to evade detection. It could also be related to privilege escalation attempts where an account is created for a specific task and then removed.
This rule detects when a user is added to a group that has permissions to modify Conditional Access (CA) policies within Azure Active Directory. Such an action could indicate an attempt to escalate privileges, bypass existing security controls, or establish persistence by altering authentication processes.
This rule identifies when an organization's Azure Privileged Identity Management (PIM) service detects an 'invalidLicenseAlertIncident'. This indicates that the necessary Microsoft Entra Premium P2 or Microsoft Entra ID Governance license for PIM is either missing or has expired, leading to non-compliance and potential security risks related to privileged access management.
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