ATT&CK coverage › Technique

Steal Application Access Token T1528

Adversaries can steal application access tokens as a means of acquiring credentials to access remote systems and resources.

Events covered

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

ProviderEvent IDTitle
Sysmon1Process creation
Sysmon17PipeEvent (Pipe Created)
Sysmon18PipeEvent (Pipe Connected)
Security-Auditing4663An attempt was made to access an object.
Security-Auditing4688A new process has been created.

Authoring guide

Patterns shared across the 5 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 (6 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\Microsoft\Teams\current\Teams.exe, \BrowserCore.exe
CommandLine2match 2\Microsoft\Teams\Cookies, \Microsoft\Teams\Local Storage\leveldb, select-string , eyJhbGciOi, "eyJ0eX"
PipeName1match 1\imposingcost, \imposecost
OriginalFileName1eq 1BrowserCore.exe
ObjectName1match 1\Microsoft\Teams\Cookies, \Microsoft\Teams\Local Storage\leveldb
process_name1match 1\Microsoft\Teams\current\Teams.exe

Top indicator values (23 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
PipeNamematch\imposecost1
PipeNamematch\imposingcost1
CommandLinematch\Microsoft\Teams\Local Storage\leveldb1
CommandLinematch\Microsoft\Teams\Cookies1
Imageends_with\Microsoft\Teams\current\Teams.exe12
CommandLinematch "eyJhbG"1
CommandLinematchfindstr13
CommandLinematchfind.exe1
CommandLinematch 'eyJ0eX'1
CommandLinematch 'eyJhbG'1
CommandLinematch eyJ0eX1
CommandLinematch eyJhbG1
CommandLinematchstrings1
CommandLinematch "eyJ0eX"1
CommandLinematchselect-string 1
CommandLinematcheyJ0eXAiOi1
CommandLinematchfind 1
CommandLinematcheyJhbGciOi1
Imageends_with\BrowserCore.exe1
OriginalFileNameeqBrowserCore.exe1

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 5 rules