sigmahighHunting

Suspicious Processes Spawned by Java.EXE

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

Detection Query

selection:
  ParentImage|endswith: \java.exe
  Image|endswith:
    - \AppVLP.exe
    - \bitsadmin.exe
    - \certutil.exe
    - \cscript.exe
    - \curl.exe
    - \forfiles.exe
    - \hh.exe
    - \mftrace.exe
    - \mshta.exe
    - \net.exe
    - \net1.exe
    - \query.exe
    - \reg.exe
    - \regsvr32.exe
    - \rundll32.exe
    - \schtasks.exe
    - \scrcons.exe
    - \scriptrunner.exe
    - \sh.exe
    - \systeminfo.exe
    - \whoami.exe
    - \wmic.exe
    - \wscript.exe
condition: selection

Author

Andreas Hunkeler (@Karneades), Florian Roth

Created

2021-12-17

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://web.archive.org/web/20231230220738/https://www.lunasec.io/docs/blog/log4j-zero-day/

Tags

attack.initial-accessattack.persistenceattack.privilege-escalation

Raw Content

title: Suspicious Processes Spawned by Java.EXE
id: 0d34ed8b-1c12-4ff2-828c-16fc860b766d
related:
    - id: dff1e1cc-d3fd-47c8-bfc2-aeb878a754c0
      type: similar
status: test
description: Detects suspicious processes spawned from a Java host process which could indicate a sign of exploitation (e.g. log4j)
references:
    - https://web.archive.org/web/20231230220738/https://www.lunasec.io/docs/blog/log4j-zero-day/
author: Andreas Hunkeler (@Karneades), Florian Roth
date: 2021-12-17
modified: 2024-01-18
tags:
    - attack.initial-access
    - attack.persistence
    - attack.privilege-escalation
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\java.exe'
        Image|endswith:
            - '\AppVLP.exe'
            - '\bitsadmin.exe'
            - '\certutil.exe'
            - '\cscript.exe'
            - '\curl.exe'
            - '\forfiles.exe'
            - '\hh.exe'
            - '\mftrace.exe'
            - '\mshta.exe'
            - '\net.exe'
            - '\net1.exe'
            - '\query.exe'
            - '\reg.exe'
            - '\regsvr32.exe'
            - '\rundll32.exe'
            - '\schtasks.exe'
            - '\scrcons.exe'
            - '\scriptrunner.exe'
            - '\sh.exe'
            - '\systeminfo.exe'
            - '\whoami.exe'
            - '\wmic.exe'        # https://app.any.run/tasks/c903e9c8-0350-440c-8688-3881b556b8e0/
            - '\wscript.exe'
    condition: selection
falsepositives:
    - Legitimate calls to system binaries
    - Company specific internal usage
level: high