Emerging Threathightest

SonicWall SSL/VPN Jarrewrite Exploitation

Detects exploitation attempts of the SonicWall Jarrewrite Exploit

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Florian Roth (Nextron Systems)Created Mon Jan 25Updated Thu Apr 276f55f047-112b-4101-ad32-43913f52db462021

Emerging Threat

Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source

Web Server Log

CategoryWeb Server Log← raw: webserver

HTTP access logs from web servers capturing request paths, methods, and status codes.

Detection Logic

detection:
    selection:
        cs-uri-query|contains: '/cgi-bin/jarrewrite.sh'
        cs-user-agent|contains:
            - ':;'
            - '() {'
            - '/bin/bash -c'
    condition: selection

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

MITRE ATT&CK

Tactics

TA0001 · Initial Access

Techniques

T1190 · Exploit Public-Facing Application

Other

detection.emerging-threats

Rule Metadata

Rule ID

6f55f047-112b-4101-ad32-43913f52db46

Status

test

Level

high

Type

Emerging Threat

Created

Mon Jan 25

Modified

Thu Apr 27

Author

Florian Roth (Nextron Systems)

Path

rules-emerging-threats/2021/Exploits/VisualDoor-Exploit/web_sonicwall_jarrewrite_exploit.yml

Raw Tags

attack.t1190attack.initial-accessdetection.emerging-threats

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