Detection rules › Sigma

File Deleted Via Sysinternals SDelete

Severity
medium
Author
Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
Source
upstream

Detects the deletion of files by the Sysinternals SDelete utility. It looks for the common name pattern used to rename files.

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1070.004 Indicator Removal: File Deletion

Event coverage

ProviderEvent IDTitle
Sysmon23FileDelete (File Delete archived)
Sysmon26FileDeleteDetected (File Delete logged)

Stages and Predicates

Stage 1: selection

or:
TargetFilename|endswith: .AAA
TargetFilename|endswith: .ZZZ

Stage 2: not 1 of filter_wireshark

TargetFilename|endswith: '\Wireshark\radius\dictionary.alcatel-lucent.aaa'

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
TargetFilenameends_with
  • .AAA
  • .ZZZ
  • \Wireshark\radius\dictionary.alcatel-lucent.aaa