ATT&CK coverage › Technique

Email Collection: Local Email Collection T1114.001

Adversaries may target user email on local systems to collect sensitive information. Files containing email data can be acquired from a user’s local system, such as Outlook storage or cache files.

Events covered

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

ProviderEvent IDTitle
Sysmon11FileCreate
Security-Auditing4688A new process has been created.
PowerShell4104Creating Scriptblock text (MessageNumber of MessageTotal).

Authoring guide

Patterns shared across the 4 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 (4 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
ScriptBlockText2match 1, in 1-comobject outlook.application, Microsoft.Office.Interop.Outlook.olDefaultFolders, Microsoft.Office.Interop.Outlook, "*Invoke-InjectGEvent*", "*Invoke-GlobalO365MailSearch*"
file_name1eq 1*.pst, *.ost
TargetFilename1ne 1"C:\Users\*\My Documents\Outlook Files\*", "C:\Users\*\AppData\Local\Microsoft\Outlook*"
EventID1eq 14104

Top indicator values (24 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
ScriptBlockTextmatchGet-Inbox.ps11
ScriptBlockTextmatch-comobject outlook.application1
ScriptBlockTextmatchMicrosoft.Office.Interop.Outlook.olDefaultFolders1
ScriptBlockTextmatchMicrosoft.Office.Interop.Outlook1
file_nameeq*.ost1
file_nameeq*.pst1
TargetFilenamene"C:\Users\*\My Documents\Outlook Files\*"1
TargetFilenamene"C:\Users\*\AppData\Local\Microsoft\Outlook*"1
ScriptBlockTextin"*Invoke-GlobalMailSearch*"1
ScriptBlockTextin"*Invoke-PasswordSprayEAS*"1
ScriptBlockTextin"*Invoke-UsernameHarvestEAS*"1
EventIDeq41041108
ScriptBlockTextin"*Invoke-InjectGEvent*"1
ScriptBlockTextin"*Invoke-MonitorCredSniper*"1
ScriptBlockTextin"*Invoke-GlobalO365MailSearch*"1
ScriptBlockTextin"*Invoke-OpenInboxFinder*"1
ScriptBlockTextin"*Invoke-PasswordSprayEWS*"1
ScriptBlockTextin"*Invoke-SelfSearch*"1
ScriptBlockTextin"*Invoke-UsernameHarvestOWA*"1
ScriptBlockTextin"*Invoke-InjectGEventAPI*"1

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 1 rule

Splunk 2 rules

Kusto Query Language 1 rule