Detection rules › Sigma

LOLBAS Data Exfiltration by DataSvcUtil.exe

Severity
medium
Author
Ialle Teixeira @teixeira0xfffff, Austin Songer @austinsonger
Source
upstream

Detects when a user performs data exfiltration by using DataSvcUtil.exe

MITRE ATT&CK coverage

TacticTechniques
ExfiltrationT1567 Exfiltration Over Web Service

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: all of selection_cli

or:
CommandLine|contains: '/in:'
CommandLine|contains: '/out:'
CommandLine|contains: '/uri:'

Stage 2: all of selection_img

or:
Image|endswith: '\DataSvcUtil.exe'
OriginalFileName: DataSvcUtil.exe

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • /in:
  • /out:
  • /uri:
Imageends_with
  • \DataSvcUtil.exe
OriginalFileNameeq
  • DataSvcUtil.exe