T1059.003 Windows Command Shell

This vulnerability is exploited by an attacker who has obtained administrative console access on the target system. The vulnerability lies in the Win32k driver, specifically in the NtGdiResetDC function, due to improper handling of user-mode callbacks. This vulnerability has been exploited by threat actors to gain elevated privileges on Windows servers. Attackers leveraged this flaw to execute arbitrary kernel commands, allowing them to manipulate system processes and deploy additional malware to perform further malicious activities. The exploit in question is actively being used in the wild, primarily in espionage campaigns. It involves triggering a use-after-free condition by executing the ResetDC function a second time for the same handle during a callback. Once the vulnerability is exploited, attackers can manipulate memory to perform arbitrary kernel function calls with controlled parameters. This allows them to achieve their objectives, such as reading and writing kernel memory, with the same permissions as the compromised system's user.

This vulnerability is exploited through a command injection weakness. Remote authenticated attackers leverage this vulnerability to perform arbitrary code execution on the target system via the Windows Resource Profiles Feature.

This vulnerability is exploited through an authentication bypass in JetBrains TeamCity, allowing remote attackers with HTTP(S) access to perform unauthorized remote code execution. This vulnerability enables attackers to gain administrative control of the TeamCity server and execute cmd.exe for various malicious activities, including downloading and executing harmful files.

This improper authentication vulnerability in Microsoft SharePoint allows an attacker to send unauthenticated HTTP POST requests to the endpoint, which SharePoint will trust the request if constructed correctly. This gives the attacker access to the APIs despite the lack of credentials, as well as the ability to impersonate users and abuse native functionality.

When chained with CVE-2025-49706, this vulnerability allows for an attacker to send a malicious __VIEWSTATE object to the same endpoint that the POST requests were sent to. This exploits a code injection flaw and allows for code execution.

CVE-2023-27532 is a vulnerability in their backup & replication servers exposed online which allows unauthenticated users to request encrypted credentials. Public reporting has indicated that various ransomware groups have exploited vulnerability to gain access and crash the backup infrastructure hosts, extract stored encrypted credentials, and deploy additional tools.

The Microsoft Sentinel Hunting "Cscript script daily summary breakdown" can detect potentially malicious scripting. The Microsoft Sentinel Hunting "Hosts running a rare process with commandline" query can identify uncommon command shell usage that may be malicious. The Microsoft Sentinel Analytics "Powershell Empire cmdlets seen in command line" query can identify use of Empire, which has modules for executing Windows Command Shell scripts. The Microsoft Sentinel Analytics "Base64 encoded Windows process command-lines" query can identify Base64 encoded PE files being launched via the command line.

This control may detect suspicious usage of PowerShell and the Windows command line. These detections include usage of suspicious arguments, dynamic script construction, and shellcode on the commandline. The following alerts may be generated: "Detected anomalous mix of upper and lower case characters in command-line", "Detected encoded executable in command line data", "Detected obfuscated command line", "Detected suspicious combination of HTA and PowerShell", "Detected suspicious commandline arguments", "Detected suspicious commandline used to start all executables in a directory", "Detected suspicious credentials in commandline", "Dynamic PS script construction", "Suspicious PowerShell Activity Detected", "Suspicious PowerShell cmdlets executed", "Suspicious command execution".

Google Security Ops is able to trigger an alert based on suspicious behavior seen in the Windows command line. This technique was scored as minimal based on low or uncertain detection coverage factor. https://github.com/chronicle/detection-rules/tree/main/soc_prime_rules/threat_hunting/windows https://github.com/chronicle/detection-rules/blob/783e0e5947774785db1c55041b70176deeca6f46/soc_prime_rules/threat_hunting/process_creation/suspicious_certutil_command.yaral