Malicious Service Installations

SIGMA detection rule by Florian Roth (Nextron Systems), Daniil Yugoslavskiy, oscd.community (update) · GPL-2.0

Detects known malicious service installs that only appear in cases of lateral movement, credential dumping, and other suspicious activities.

title: Malicious Service Installations
id: a5f841a8-5dcb-5ee4-73ea-5331859bf763
related:
    - id: 2cfe636e-317a-4bee-9f2c-1066d9f54d1a
      type: derived
description: Detects known malicious service installs that only appear in cases of lateral movement, credential dumping, and other suspicious activities.
author: Florian Roth (Nextron Systems), Daniil Yugoslavskiy, oscd.community (update)
date: 2017-03-27
modified: 2022-03-21
references:
    - https://awakesecurity.com/blog/threat-hunting-for-paexec/
    - https://www.fireeye.com/blog/threat-research/2017/05/wannacry-malware-profile.html
    - https://blog.f-secure.com/wp-content/uploads/2019/10/CosmicDuke.pdf
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1003
    - attack.t1035
    - attack.t1050
    - car.2013-09-005
    - attack.t1543.003
    - attack.t1569.002
logsource:
    product: windows
    service: system
detection:
    system:
        Channel: System
    selection:
        Provider_Name: Service Control Manager
        EventID: 7045
    malsvc_paexec:
        ImagePath|contains: \PAExec
    malsvc_wannacry:
        ServiceName: mssecsvc2.0
    malsvc_persistence:
        ImagePath|contains: net user
    malsvc_apt29:
        ServiceName: Java(TM) Virtual Machine Support Service
    condition: system and (selection and 1 of malsvc_*)
falsepositives:
    - Unknown
level: critical
status: unsupported
ruletype: Sigma

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

b68bc2ac-efb6-4379-875c-c34d8a416e0c

Propose edits, view related rules, and engage with the community through comments.

Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

Community Discussion