kevmap

TechniquesT1036.010 › AN1077

AN1077 Analytic 1077

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

<p>Detects adversary behavior where a newly created or renamed user account closely resembles existing service or administrator accounts to blend in and avoid detection. Common patterns include prefix/suffix modifications, homoglyphs, or use of names like 'admin1', 'adm1n', or 'backup_help'.</p>
Detects
T1036.010 Masquerade Account Name
Part of
DET0383 Detection Strategy for Masquerading via Account Name Similarity

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 sourceChannelData component
WinEventLog:SecurityEventCode=4720DC0014 User Account Creation
windows:osqueryUser enumeration with creation/last modified timestampsDC0013 User Account Metadata

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.

FieldDescription
SimilarityThresholdDefines how close in Levenshtein or visual distance an account name must be to a legitimate one to raise an alert.
MonitoredAccountListSet of known legitimate accounts to compare new account names against.
TimeWindowPeriod within which anomalous account creation or renaming is evaluated in relation to discovery or deletion activity.