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Detection rules › Sigma

Suspicious Processes Spawned by Java.EXE

Severity
high
Author
Andreas Hunkeler (@Karneades), Florian Roth
Source
upstream

Detects suspicious processes spawned from a Java host process which could indicate a sign of exploitation (e.g. log4j)

Event coverage

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

Stages and Predicates

Stage 1: selection

or:
Image|endswith: '\AppVLP.exe'
Image|endswith: '\bitsadmin.exe'
Image|endswith: '\certutil.exe'
Image|endswith: '\cscript.exe'
Image|endswith: '\curl.exe'
Image|endswith: '\forfiles.exe'
Image|endswith: '\hh.exe'
Image|endswith: '\mftrace.exe'
Image|endswith: '\mshta.exe'
Image|endswith: '\net.exe'
Image|endswith: '\net1.exe'
Image|endswith: '\query.exe'
Image|endswith: '\reg.exe'
Image|endswith: '\regsvr32.exe'
Image|endswith: '\rundll32.exe'
Image|endswith: '\schtasks.exe'
Image|endswith: '\scrcons.exe'
Image|endswith: '\scriptrunner.exe'
Image|endswith: '\sh.exe'
Image|endswith: '\systeminfo.exe'
Image|endswith: '\whoami.exe'
Image|endswith: '\wmic.exe'
Image|endswith: '\wscript.exe'
ParentImage|endswith: '\java.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
Imageends_with
  • \AppVLP.exe corpus 6 (sigma 6)
  • \bitsadmin.exe corpus 23 (sigma 23)
  • \certutil.exe corpus 34 (sigma 34)
  • \cscript.exe corpus 64 (sigma 64)
  • \curl.exe corpus 19 (sigma 19)
  • \forfiles.exe corpus 11 (sigma 11)
  • \hh.exe corpus 14 (sigma 14)
  • \mftrace.exe corpus 6 (sigma 6)
  • \mshta.exe corpus 57 (sigma 57)
  • \net.exe corpus 27 (sigma 27)
  • \net1.exe corpus 25 (sigma 25)
  • \query.exe corpus 5 (sigma 5)
  • \reg.exe corpus 46 (sigma 46)
  • \regsvr32.exe corpus 57 (sigma 57)
  • \rundll32.exe corpus 76 (sigma 76)
  • \schtasks.exe corpus 45 (sigma 45)
  • \scrcons.exe corpus 8 (sigma 8)
  • \scriptrunner.exe corpus 8 (sigma 8)
  • \sh.exe corpus 13 (sigma 13)
  • \systeminfo.exe corpus 9 (sigma 9)
  • \whoami.exe corpus 18 (sigma 18)
  • \wmic.exe corpus 37 (sigma 37)
  • \wscript.exe corpus 64 (sigma 64)
ParentImageends_with
  • \java.exe corpus 7 (sigma 7)