AN1094 Analytic 1094

Windows · attack.mitre.org · ATT&CK Enterprise v19.2

<p>Detects a multi-event behavior chain involving UAC bypass attempts via known auto-elevated binaries (e.g., eventvwr.exe, sdclt.exe), unauthorized Registry changes to UAC-related keys, and anomalous process execution with elevated privileges but lacking standard parent-child lineage. Suspicious patterns include invocation of auto-elevated COM objects or manipulation of isolatedCommand Registry entries without consent prompts.</p>

Detects: T1548.002 Bypass User Account Control
Part of: DET0388 Detection Strategy for T1548.002 – Bypass User Account Control (UAC)

Log sources and channels

Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.

Log source	Channel	Data component
WinEventLog:Security	`EventCode=4688`	DC0032 Process Creation
WinEventLog:Security	`EventCode=4672`	DC0088 Logon Session Metadata
WinEventLog:Sysmon	`EventCode=13, 14`	DC0063 Windows Registry Key Modification
WinEventLog:Sysmon	`EventCode=10`	DC0035 Process Access
WinEventLog:Sysmon	`EventCode=7`	DC0016 Module Load

Mutable elements

Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.

Field	Description
`TimeWindow`	Correlate registry tampering and elevation within a tunable time window (e.g., 30 seconds) to reduce noise from benign admin activity.
`ElevatedProcessNameList`	Tunable list of suspicious elevated binaries (e.g., sdclt.exe, eventvwr.exe, computerdefaults.exe) known to support UAC bypass.
`ParentProcessAnomalyThreshold`	Define logic for parent-child mismatch (e.g., non-elevated process spawning auto-elevated one) to flag uncommon elevation paths.

KEV CVEs whose mapped technique this analytic detects

CVE	Vendor / product	State
CVE-2021-31207	Microsoft Exchange Server	Mapped