Detection rules › Sigma

Renamed Jusched.EXE Execution

Severity
high
Author
Markus Neis, Swisscom
Source
upstream

Detects the execution of a renamed "jusched.exe" as seen used by the cobalt group

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1036.003 Masquerading: Rename Legitimate Utilities

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: selection

Description: ['Java Update Scheduler', 'Java(TM) Update Scheduler']

Stage 2: not filter

Image|endswith: '\jusched.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
Descriptioneq
  • Java Update Scheduler
  • Java(TM) Update Scheduler
Imageends_with
  • \jusched.exe