LoFP / users working with these data types or exchanging message files

Techniques

t1039

Sample rules

Suspicious Access to Sensitive File Extensions - Zeek

source: sigma
technicques:

Description

Detects known sensitive file extensions via Zeek

Detection logic

condition: selection
selection:
  name|endswith:
  - .pst
  - .ost
  - .msg
  - .nst
  - .oab
  - .edb
  - .nsf
  - .bak
  - .dmp
  - .kirbi
  - \groups.xml
  - .rdp

Suspicious Access to Sensitive File Extensions

source: sigma
technicques:
- t1039

Description

Detects known sensitive file extensions accessed on a network share

Detection logic

condition: selection
selection:
  EventID: 5145
  RelativeTargetName|endswith:
  - .bak
  - .dmp
  - .edb
  - .kirbi
  - .msg
  - .nsf
  - .nst
  - .oab
  - .ost
  - .pst
  - .rdp
  - \groups.xml