Georg Lauenstein
@gsecTrusted contributorCompletionist
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206 detections
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Detects shadow copy destruction and recovery feature tampering used
by Akira and other ransomware families to prevent victims from restoring data.
Covers vssadmin / wmic shadowcopy deletion, wbadmin catalog deletion and
bcdedit recovery-disabling commands executed from the command line.
by Akira and other ransomware families to prevent victims from restoring data.
Covers vssadmin / wmic shadowcopy deletion, wbadmin catalog deletion and
bcdedit recovery-disabling commands executed from the command line.
Detects an AhsayCBS / Tomcat / Java web service process spawning a
command or script interpreter. After exploiting AhsayCBS, attackers executed
shell commands through the dropped webshell to run reconnaissance and download
the XMRig payload. A backup web service should never directly spawn cmd.exe,
powershell.exe, or a Unix shell - this indicates webshell command execution.
command or script interpreter. After exploiting AhsayCBS, attackers executed
shell commands through the dropped webshell to run reconnaissance and download
the XMRig payload. A backup web service should never directly spawn cmd.exe,
powershell.exe, or a Unix shell - this indicates webshell command execution.
Detects shell or interpreter processes spawned as children of the
PAN-OS management web service. Exploitation of CVE-2026-0322 (authenticated RCE,
CWE-94) in the management interface results in the web server process forking
unexpected /bin/sh, curl, wget or scripting interpreter children to run
post-exploitation commands on the management plane.
PAN-OS management web service. Exploitation of CVE-2026-0322 (authenticated RCE,
CWE-94) in the management interface results in the web server process forking
unexpected /bin/sh, curl, wget or scripting interpreter children to run
post-exploitation commands on the management plane.
Detects a PHP file being written into a WordPress content directory
that has no legitimate reason to hold executable code. The wp2shell chain against
CVE-2026-63030 and CVE-2026-60137 stages its payload through wp-content/uploads/
and wp-content/upgrade/ before it lands as a plugin under
wp-content/plugins/wp2shell_/, so both the staging directories and the
campaign's plugin directory shape are matched. uploads/ is the durable half:
WordPress serves user media from it and nothing there should ever be a .php file,
which makes a PHP write there a strong webshell indicator independent of this
campaign.
that has no legitimate reason to hold executable code. The wp2shell chain against
CVE-2026-63030 and CVE-2026-60137 stages its payload through wp-content/uploads/
and wp-content/upgrade/ before it lands as a plugin under
wp-content/plugins/wp2shell_/, so both the staging directories and the
campaign's plugin directory shape are matched. uploads/ is the durable half:
WordPress serves user media from it and nothing there should ever be a .php file,
which makes a PHP write there a strong webshell indicator independent of this
campaign.
Detects HTTP requests to the WordPress REST batch endpoint (/wp-json/batch/v1 or /?rest_route=/batch/v1) carrying user agents associated with public wp2shell proof-of-concept tooling. This targets the pre-auth route confusion and SQL injection primitive in WordPress Core (CVE-2026-63030, CVE-2026-60137) that leads to full remote code execution.
Detects HTTP requests to the PeopleSoft PSEMHUB servlet using alternate
encodings such as the percent-encoded path %50SEMHUB. ShinyHunters/UNC6240 mass-exploit
Oracle PeopleSoft CVE-2026-35273 against internet-facing systems and encode the path to
defeat literal WAF signatures for /PSEMHUB/ (T1190, T1027).
encodings such as the percent-encoded path %50SEMHUB. ShinyHunters/UNC6240 mass-exploit
Oracle PeopleSoft CVE-2026-35273 against internet-facing systems and encode the path to
defeat literal WAF signatures for /PSEMHUB/ (T1190, T1027).
Detects mshta.exe executing a remote HTA payload over HTTP/HTTPS, the initial fileless execution stage of ACR Stealer's Campaign 2. The retrieved HTA contains VBScript loaders that ultimately deploy obfuscated PowerShell and steganography-assisted in-memory shellcode.
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.
Detects creation of a scheduled task named "Windows Defender Advanced
Threat Protection Service" configured to run at system startup with SYSTEM privileges
and launch an executable named defender.exe. HoneyMyte (Mustang Panda) used this exact
schtasks command to establish boot persistence for the CoolClient backdoor sideloader,
masquerading the task and binary as a legitimate Windows Defender component.
Threat Protection Service" configured to run at system startup with SYSTEM privileges
and launch an executable named defender.exe. HoneyMyte (Mustang Panda) used this exact
schtasks command to establish boot persistence for the CoolClient backdoor sideloader,
masquerading the task and binary as a legitimate Windows Defender component.
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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