Solarwinds SUPERNOVA Webshell Access

testcritical
log source: webserverauthor Florian Roth (Nextron Systems)date 2020-12-17
01

description

What this is, in brief.

Detects access to SUPERNOVA webshell as described in Guidepoint report

02

tags

attack.persistenceattack.t1505.003detection.emerging-threats
03

rule source (YAML)

title: Solarwinds SUPERNOVA Webshell Access
id: a2cee20b-eacc-459f-861d-c02e5d12f1db
status: test
description: Detects access to SUPERNOVA webshell as described in Guidepoint report
references:
    - https://www.guidepointsecurity.com/supernova-solarwinds-net-webshell-analysis/
    - https://www.anquanke.com/post/id/226029
author: Florian Roth (Nextron Systems)
date: 2020-12-17
modified: 2023-01-02
tags:
    - attack.persistence
    - attack.t1505.003
    - detection.emerging-threats
logsource:
    category: webserver
detection:
    selection1:
        cs-uri-query|contains|all:
            - 'logoimagehandler.ashx'
            - 'clazz'
    selection2:
        cs-uri-query|contains: 'logoimagehandler.ashx'
        sc-status: 500
    condition: selection1 or selection2
falsepositives:
    - Unknown
level: critical
04

detects techniques (1)

ATT&CK techniques this enables or maps to.

05

references

External citations — patches, advisories, analysis.