ATT&CK coverage › Technique

Hide Artifacts: Hidden Users T1564.002

Adversaries may use hidden users to hide the presence of user accounts they create or modify. Administrators may want to hide users when there are many user accounts on a given system or if they want to hide their administrative or other management accounts from other users.

Events covered

3 catalog events are tagged with this technique by at least one rule.

ProviderEvent IDTitle
Sysmon1Process creation
Sysmon13RegistryEvent (Value Set)
Security-Auditing4688A new process has been created.

Authoring guide

Patterns shared across the 3 rules above: which fields they filter on, what specific values they look for, and what they exclude. Field names are normalized across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.

Fields filtered most (5 distinct)

The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.

FieldRulesHowSample values
Image2ends_with 2\reg.exe, \secedit.exe
CommandLine2match 2\SOFTWARE\Microsoft\Windows..., /d 0, add, /cfg, /export
Details1eq 1DWORD (0x00000000)
TargetObject1match 1\SOFTWARE\Microsoft\Windows...
OriginalFileName1eq 1SeCEdit

Top indicator values (13 distinct)

Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique.

FieldKindValueRules (here)Corpus reach
DetailseqDWORD (0x00000000)138
TargetObjectmatch\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList1
Imageends_with\reg.exe146
CommandLinematch\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList1
CommandLinematchadd116
CommandLinematch/v14
CommandLinematch/d 012
CommandLinematch/configure1
CommandLinematch/db1
OriginalFileNameeqSeCEdit1
CommandLinematch/cfg1
Imageends_with\secedit.exe1
CommandLinematch/export1

Rules under this technique

Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.

Sigma 3 rules