Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the Cisco AsyncOS content scanner / AMP service writing files into
sensitive system directories such as /etc, /root or /boot. CVE-2026-76519 uses a relative
path traversal in AMP attachment handling so a crafted email makes the root-running scanner
write attacker-chosen files wherever it likes. Writes outside the expected spool and
Content Scanner Tools directories are the core exploitation artifact.
sensitive system directories such as /etc, /root or /boot. CVE-2026-76519 uses a relative
path traversal in AMP attachment handling so a crafted email makes the root-running scanner
write attacker-chosen files wherever it likes. Writes outside the expected spool and
Content Scanner Tools directories are the core exploitation artifact.
The following analytic detects the execution of the SubInAcl utility. SubInAcl is a legacy Windows Resource Kit tool from the Windows 2003 era, used to manipulate security descriptors of securable objects. It leverages data from Endpoint Detection and Response (EDR) agents, specifically searching for any process execution involving "SubInAcl.exe" binary. This activity can be significant because the utility should be rarely found on modern Windows machines, which mean any execution could potentially be considered suspicious. If confirmed malicious, this could allow an attacker to blind defenses by tampering with EventLog ACLs or modifying the access to a previously denied resource.
Detects potential exploitation of CVE-2026-87886 in the Acronis Backup plugin for cPanel & WHM, where an adversary uses insecure file permissions to elevate privileges. The rule monitors for execution of file permission or ownership changing utilities (chmod, chown) targeting files associated with backup plugins.
Detects the use of chmod, chown, or chattr to modify file permissions on paths related to backup (Acronis) or hosting management (cPanel, WHM, Plesk) software. Specifically monitors for command-line arguments indicating a change to world-writable permissions (e.g., 777, o+w, a+rwx) on sensitive configuration files.
Detects the use of chmod, chown, or chattr to modify file permissions on paths related to backup (Acronis) or hosting management (cPanel, WHM, Plesk) software. Specifically monitors for command-line arguments indicating a change to world-writable permissions (e.g., 777, o+w, a+rwx) on sensitive configuration files.
Detects potential exploitation of CVE-2026-87886 in the Acronis Backup plugin for cPanel & WHM, where an adversary uses insecure file permissions to elevate privileges. The rule monitors for execution of file permission or ownership changing utilities (chmod, chown) targeting files associated with backup plugins.
Detects the use of chmod or chown commands to modify permissions or ownership of files associated with Acronis backup plugins within cPanel, WHM, or Plesk environments. This activity is indicative of potential unauthorized manipulation or exploitation of the backup configuration, such as that associated with CVE-2026-87886.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects the Screen Sharing file-copy helper (SSFileCopySender/SSFileCopyReceiver) running as UID 0/GID 80 while the connected session user is non-root/non-admin, indicating abuse of the arbitrary root file read/write primitive.
Detects the use of the Windows 'attrib.exe' utility to hide a file named 'svehost.exe' within the 'AppData\Windows' directory. This behavior is indicative of an adversary attempting to conceal malicious artifacts or persistence mechanisms from the user and basic system exploration tools.
Hunting rule for T1222 "Enable Local and Remote Symbolic Links via reg.exe". No public in-the-wild intel reference available; correlate before alerting.
Hunting rule for T1222 "Enable Local and Remote Symbolic Links via reg.exe". No public in-the-wild intel reference available; correlate before alerting.
Detects modification of DACL on files to allow malicious access
Detects the use of the Windows attrib.exe utility to modify file attributes, specifically targeting the addition of hidden (+h) or system (+s) attributes. The rule looks for these modifications in suspicious locations or contexts, such as ProgramData, IDM log directories, or in association with specific application filenames, which may indicate attempts to hide malicious files or persistence mechanisms.
Hunting rule for T1222 "Enable Local and Remote Symbolic Links via reg.exe". No public in-the-wild intel reference available; correlate before alerting.
Detects file creation, copy, or rename operations within known VPN application directories (CyberGhost, ExpressVPN, NordVPN) when initiated by Chromium Embedded Framework (CEF) related processes (CefSharp.BrowsersSubprocess). This behavior is highly irregular as standard web browser components should not be modifying the local configuration or installation directories of VPN software.
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