Detection rules › Sigma

Suspicious Execution From Outlook Temporary Folder

Severity
high
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects a suspicious program execution in Outlook temp folder

MITRE ATT&CK coverage

TacticTechniques
Initial AccessT1566.001 Phishing: Spearphishing Attachment

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

Image|contains: '\Temporary Internet Files\Content.Outlook\'

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
Imagematch
  • \Temporary Internet Files\Content.Outlook\ corpus 2 (sigma 2)