Detections
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Detects scenarios where an attacker attempts to create a service that triggers TSCON in order to preform local RDP session hijack.
KQL Query
Detects a tscon.exe start as LOCAL SYSTEM
Detects a tscon.exe start as LOCAL SYSTEM
This query was originally published in the threat analytics report, Ransomware continues to hit healthcare, critical services.
It finds all user accounts that have logged on to an endpoint affected by Cobalt Strike, a penetration tool.
Assume that all credentials on endpoints affected by Cobalt Strike were available to attackers and that all associated accounts are compromised. Note that attackers will not only dump credentials for accounts that have logged on to interactive or RDP sessions, but will also dump cached credentials and passwords for service accounts and scheduled tasks that are stored in the LSA Secrets section of the registry.
Reference - https://attack.mitre.org/software/S0154/
It finds all user accounts that have logged on to an endpoint affected by Cobalt Strike, a penetration tool.
Assume that all credentials on endpoints affected by Cobalt Strike were available to attackers and that all associated accounts are compromised. Note that attackers will not only dump credentials for accounts that have logged on to interactive or RDP sessions, but will also dump cached credentials and passwords for service accounts and scheduled tasks that are stored in the LSA Secrets section of the registry.
Reference - https://attack.mitre.org/software/S0154/
c2-bluekeep
KQL
This query was originally published in the threat analytics report, Exploitation of CVE-2019-0708 (BlueKeep).
CVE-2019-0708, also known as BlueKeep, is a critical remote code execution vulnerability involving RDP. Soon after its disclosure, the NSA issued a rare advisory about this vulnerability, out of concern that it could be used to quickly spread malware. Attackers have since used this vulnerability to install cryptocurrency miners on targets.
Microsoft has issued updates for this vulnerability, as well as guidance for protecting operating systems that we no longer support. Microsoft Defender ATP also contains behavioral detections for defending against this threat.
The following query locates devices that have communicated with attacker infrastructure associated with BlueKeep-related cryptomining.
References:
https://nvd.nist.gov/vuln/detail/CVE-2019-0708
https://www.nsa.gov/News-Features/News-Stories/Article-View/Article/1865726/nsa-cybersecurity-advisory-patch-remote-desktop-services-on-legacy-versions-of/
https://www.wired.com/story/bluekeep-hacking-cryptocurrency-mining/
https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2019-0708
https://support.microsoft.com/help/4500705/customer-guidance-for-cve-2019-0708
https://www.microsoft.com/security/blog/2019/11/07/the-new-cve-2019-0708-rdp-exploit-attacks-explained/
CVE-2019-0708, also known as BlueKeep, is a critical remote code execution vulnerability involving RDP. Soon after its disclosure, the NSA issued a rare advisory about this vulnerability, out of concern that it could be used to quickly spread malware. Attackers have since used this vulnerability to install cryptocurrency miners on targets.
Microsoft has issued updates for this vulnerability, as well as guidance for protecting operating systems that we no longer support. Microsoft Defender ATP also contains behavioral detections for defending against this threat.
The following query locates devices that have communicated with attacker infrastructure associated with BlueKeep-related cryptomining.
References:
https://nvd.nist.gov/vuln/detail/CVE-2019-0708
https://www.nsa.gov/News-Features/News-Stories/Article-View/Article/1865726/nsa-cybersecurity-advisory-patch-remote-desktop-services-on-legacy-versions-of/
https://www.wired.com/story/bluekeep-hacking-cryptocurrency-mining/
https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2019-0708
https://support.microsoft.com/help/4500705/customer-guidance-for-cve-2019-0708
https://www.microsoft.com/security/blog/2019/11/07/the-new-cve-2019-0708-rdp-exploit-attacks-explained/
Detects a tscon.exe start as LOCAL SYSTEM
