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Tech

CM

LegacyHive Mounts a Target’s Hive Into the Helper’s Session

A working Windows exploit dropped roughly half an hour after July’s Patch Tuesday, with no CVE and no Microsoft advisory. LegacyHive edits a registry hive while it is unmounted, so live registry auditing never sees the write, and the payoff is another account’s hive mounted into a session the attacker controls. Here is what actually fires, what the first published rule got wrong, and which controls cut the class.

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CM

Screening Serpens Hijacks AppDomainManager Ahead of Its RAT

Iran-nexus Screening Serpens paired AppDomainManager hijacking with DLL sideloading across its 2026 campaigns. A managed loader assembly runs before the host binary’s normal entry point and isn’t reliably represented in Sysmon ImageLoad telemetry, so the detection has to move to file-create events and .config content.

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CM

The pnpm Cache Poisoning Primitive GitHub Closed in June

The TanStack compromise published 84 poisoned npm versions across 42 packages by writing a cache entry into the default-branch scope from an untrusted fork PR. GitHub has since made that write path read-only for low-trust triggers — but cache creation still never touches the audit log, so post-hoc detection has to live on the runner and in cache-inventory differencing instead.

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Cyber Tools

Suspended Mid-Dump: The Race Condition Behind EDR-Freeze

EDR-Freeze abuses WerFaultSecure.exe — a Microsoft-signed WinTCB/PPL crash dumper — to suspend Defender and third-party EDR for as long as the operator holds it, with no kernel driver and almost no forensic residue. Here is what the detection actually looks like in Sysmon, why the filename-based Sigma rule everyone shipped first is a canary rather than a control, and which process-access relationship the real rule matches.

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CM

Legitimate Generator Writes Baseline at Zero Outside Patch Windows

System-level systemd generators run as root at the earliest moment of boot, before auditd, before the EDR agent, before your normal journald/syslog/audit telemetry is reliably up. You will never see the execution. Here is how to build the detection that actually works — file writes and baseline reconciliation — and what breaks it the first week.

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CM

A .NET App Config Can Disable the Runtime’s ETW Provider

AppDomainManager hijacking loads attacker code into a Microsoft-signed .NET process before the app runs — and the same config file that does it can switch off the ETW telemetry your EDR depends on. The cleanest detection isn’t the dropped DLL. It’s the XML.

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RA

Thirty-One Days of IPv4 Tenure Inside an ORB Network

China-nexus operational relay box networks rotate their egress IPs monthly and pick exit nodes inside the victim’s own region. Blocklists and impossible-travel rules don’t fire. Here’s where the detection actually lives, and what the first round of tuning has to fix.

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AU

Fan-Out Over Ciphers: The Kerberoast Rule That Outlives RC4

Encryption-type detancy deton Kerberos TGS requests still catches lazy roasting, but as RC4 gets disabled the durable signal moves to behavior. What to grep for, why the AES downgrade tell degrades, and how to kill service-account false positives before they bury the SOC.

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