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Detection rules › Sigma

Potentially Suspicious DMP/HDMP File Creation

Severity
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects the creation of a file with the ".dmp"/".hdmp" extension by a shell or scripting application such as "cmd", "powershell", etc. Often created by software during a crash. Memory dumps can sometimes contain sensitive information such as credentials. It's best to determine the source of the crash.

Event coverage

ProviderEvent IDTitle
Sysmon11FileCreate

Stages and Predicates

Stage 1: selection

or:
Image|endswith: '\cmd.exe'
Image|endswith: '\cscript.exe'
Image|endswith: '\mshta.exe'
Image|endswith: '\powershell.exe'
Image|endswith: '\pwsh.exe'
Image|endswith: '\wscript.exe'
or:
TargetFilename|endswith: .dmp
TargetFilename|endswith: .dump
TargetFilename|endswith: .hdmp

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
Imageends_with
  • \cmd.exe corpus 92 (sigma 92)
  • \cscript.exe corpus 64 (sigma 64)
  • \mshta.exe corpus 57 (sigma 57)
  • \powershell.exe corpus 143 (sigma 143)
  • \pwsh.exe corpus 140 (sigma 140)
  • \wscript.exe corpus 64 (sigma 64)
TargetFilenameends_with
  • .dmp corpus 3 (sigma 3)
  • .dump
  • .hdmp