Video Capture T1125

Tactic: Collection

An adversary can leverage a computer's peripheral devices (e.g., integrated cameras or webcams) or applications (e.g., video call services) to capture video recordings for the purpose of gathering information. Images may also be captured from devices or applications, potentially in specified intervals, in lieu of video files.

Events covered

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

Authoring guide

Patterns shared across the 8 rules above: which fields they filter on, what specific values they look for, and what they exclude. The catalog normalizes field names 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 (13 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
CommandLine2contains 2-encodedcommand, /shadow, mstsc
TargetObject2contains 1, ends_with 1:#$recycle.bin#, :#temp#, :#users#default#, \software\policies\microsoft\windows nt\terminal services
event.category2eq 2process
EfectiveCommand1regex_match 1regexEmpire
EventData1contains 1-encodedcommand, powershell.exe, powershell_ise.exe
EventID1eq 14688
EventType1in 1exec, exec_event, start
Image1ends_with 1\mstsc.exe
ScriptBlockText1eq 1, in 1avicap32, avicap32.dll, capcreatecapturewindow
category_type1eq 1User Group
event.type1eq 1start
host.os.type1eq 1
process_name1in 1deepin-screenshot, flameshot, gnome-screenshot

Top indicator values (57 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. Click a value to expand the rules under this technique that use it.

FieldKindValueRules (here)Corpus reach
event.categoryeq
process
2128
CommandLinecontains
-encodedcommand
13
CommandLinecontains
/shadow
1
CommandLinecontains
mstsc
1
EfectiveCommandregex_match
regexEmpire
1
EventDatacontains
-encodedcommand
1
EventDatacontains
powershell.exe
1
EventDatacontains
powershell_ise.exe
1
EventDatacontains
pwsh.exe
1
EventIDeq
4688
1313
EventTypein
exec
1171
EventTypein
exec_event
1139
EventTypein
start
1134
Imageends_with
\mstsc.exe
16
ScriptBlockTexteq
directx.capture.filters
1
ScriptBlockTexteq
newframeeventhandler
1
ScriptBlockTexteq
start-webcamrecorder
1
ScriptBlockTexteq
videocapturedevice
1
ScriptBlockTexteq
videocompressors
1
ScriptBlockTextin
avicap32
1
ScriptBlockTextin
avicap32.dll
1
ScriptBlockTextin
capcreatecapturewindow
1
ScriptBlockTextin
capcreatecapturewindowa
1
ScriptBlockTextin
capgetdriverdescription
1
TargetObjectcontains
:#$recycle.bin#
1
TargetObjectcontains
:#temp#
1
TargetObjectcontains
:#users#default#
1
TargetObjectcontains
:#users#desktop#
1
TargetObjectcontains
:#users#public#
1
TargetObjectcontains
:#windows#temp#
1

Exclusions (7 distinct)

Field/operator/value combinations excluded by rules under this technique (top-level not() clauses), sorted by how many rules exclude each. These are the false-positive paths the community has learned to filter out. A new rule that ignores the high-count entries here will likely fire on the same noisy paths. Click a value to expand the rules under this technique that exclude it.

FieldKindValueRules excluding
EventDatacontains
gc_service.exe
1
EventDatacontains
gc_worker.exe
1
ParentImagecontains
gc_service.exe
1
ParentImagecontains
gc_worker.exe
1
process.argsin
--help
1
process.argsin
--version
1
process.argsin
-h
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.

Platform (all)
Domain (all)

Sigma 4 rules

Elastic 2 rules

Kusto 1 rule

Panther 1 rule