Exfiltration Over Physical Medium T1052

Tactic: Exfiltration

Adversaries may attempt to exfiltrate data via a physical medium, such as a removable drive. In certain circumstances, such as an air-gapped network compromise, exfiltration could occur via a physical medium or device introduced by a user. Such media could be an external hard drive, USB drive, cellular phone, MP3 player, or other removable storage and processing device. The physical medium or device could be used as the final exfiltration point or to hop between otherwise disconnected systems.

Events covered

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

Authoring guide

These 6 rules share fields, values, and exclusions.

Fields filtered most (19 distinct)

These fields appear most often in rule filters.

FieldRulesHowSample values
ActionType2eq 2, in 1FileCreated, FileDownloaded, FileRenamed, UsbDriveMounted
AlertName1eq 1mass download by a single user
CloudAppEvent_EndTime1cross_field_compare 1Alert_TimeGenerated
DeviceFileEvent_Files1starts_with 1USB_DriveLetter
DeviceFileEvent_StartTime1cross_field_compare 1Alert_TimeGenerated
EventType1eq 1mount
Status1ne 1Resolved
TargetDriveLetter1eq 1mounteddriveletters
TargetObject1contains 1usbstor
Type1eq 1account, ip
USB_DriveLetter1is_not_null 1
USB_TimeGenerated1cross_field_compare 1Alert_TimeGenerated
event.category1eq 1registry
event.outcome1eq 1success
event.type1eq 1device

Top indicator values (21 distinct)

These values appear most often in rule predicates.

FieldKindValueRules (here)Corpus reach
ActionTypeeq
UsbDriveMounted
23
ActionTypeeq
FileDownloaded
1
ActionTypein
FileCreated
13
ActionTypein
FileRenamed
1
AlertNameeq
mass download by a single user
1
CloudAppEvent_EndTimecross_field_compare
Alert_TimeGenerated
1
DeviceFileEvent_Filesstarts_with
USB_DriveLetter
1
DeviceFileEvent_StartTimecross_field_compare
Alert_TimeGenerated
1
EventTypeeq
mount
13
Statusne
Resolved
1
TargetDriveLettereq
mounteddriveletters
1
TargetObjectcontains
usbstor
1
Typeeq
account
113
Typeeq
ip
17
USB_TimeGeneratedcross_field_compare
Alert_TimeGenerated
1
event.categoryeq
registry
114
event.outcomeeq
success
1369
event.typeeq
device
1
file_nameeq
ca_filelist
1
registry_value_nameeq
friendlyname
13
volume.removableeq
true
1

Rules under this technique

These vendors publish rules tagged with this technique.

Platform (all)
Domain (all)

Elastic 4 rules

Kusto 2 rules