Coverage › CVE-2019-0604

CVE-2019-0604 Mapped Partial Sigma

Microsoft SharePoint Remote Code Execution Vulnerability

Vendor / product

Microsoft — SharePoint

Description (CISA)

Microsoft SharePoint fails to check the source markup of an application package. An attacker who successfully exploits the vulnerability could run remote code in the context of the SharePoint application pool and the SharePoint server farm account.

Added to KEV

2021-11-03

Due date

2022-05-03

Required action

Apply updates per vendor instructions.

Known ransomware use

Known

CWE

CWE-20

CISA notes

https://nvd.nist.gov/vuln/detail/CVE-2019-0604

Elsewhere

cve.org · NVD · CISA KEV · JSON

ATT&CK techniques · CTID Mappings Explorer, ATT&CK 16.1, KEV snapshot 2025-07-28

5 mapping objects across 5 techniques. exploitation technique states how the vulnerability is exploited; primary and secondary impact state what exploitation achieves. They are different claims and are labelled as such.

Detection chain · ATT&CK Enterprise v19.2 detection strategies, analytics, log sources

T1003 OS Credential Dumping secondary impact

• DET0234 Credential Dumping via Sensitive Memory and Registry Access Correlation
  AN0648 Windows

  Processes accessing LSASS memory or SAM registry hives outside of trusted security tools, often followed by file creation or lateral movement. Detects unauthorized access to sensitive OS subsystems for credential extraction.

  WinEventLog:Sysmon EventCode=10 → DC0035 Process Access

  WinEventLog:Sysmon EventCode=1 → DC0032 Process Creation

  WinEventLog:Security EventCode=4663, 4670, 4656 → DC0055 File Access

  WinEventLog:Security EventCode=4662 → DC0071 Active Directory Object Access

  Tunable: AccessMask TimeWindow ParentProcessFilter
  AN0649 Linux

  Processes opening /proc//mem or /proc//maps targeting credential-storing services like sshd or login. Behavior often includes high privilege escalation and memory inspection tools such as gcore or gdb.

  auditd:SYSCALL open → DC0055 File Access

  auditd:SYSCALL ptrace → DC0035 Process Access

  auditd:SYSCALL execve → DC0032 Process Creation

  Tunable: TargetProcessName ToolProcessName
  AN0650 macOS

  Unsigned processes accessing system memory or launching known credential scraping tools (e.g., osascript, dylib injections) to access the Keychain or sensitive memory regions.

  macos:unifiedlog Code Execution & Entitlement Access → DC0034 Process Metadata

  macos:keychain Access to Keychain DB or system.keychain → DC0055 File Access

  macos:osquery Invocation of osascript or dylib injection → DC0032 Process Creation

  Tunable: KeychainAccessPath SignedBinaryStatus

Sigma rules tagged attack.t1003 (37)

All 37 rules on the technique page →

T1041 Exfiltration Over C2 Channel primary impact

• DET0348 Detection Strategy for Exfiltration Over C2 Channel
  AN0988 Windows

  Identifies suspicious outbound traffic volume mismatches from processes that typically do not generate network activity, particularly over C2 protocols like HTTPS, DNS, or custom TCP/UDP ports, following file or data access.

  WinEventLog:Sysmon EventCode=1 → DC0032 Process Creation

  WinEventLog:Sysmon EventCode=3, 22 → DC0082 Network Connection Creation

  NSM:Flow Flow/PCAP analysis for outbound payloads → DC0085 Network Traffic Content

  WinEventLog:Security EventCode=4663, 4670, 4656 → DC0055 File Access

  Tunable: DataVolumeThreshold KnownBenignProcesses
  AN0989 Linux

  Monitors for processes reading sensitive files then immediately initiating unusual outbound connections or bulk transfer sessions over persistent sockets, particularly with encrypted or binary payloads.

  auditd:SYSCALL execve → DC0032 Process Creation

  auditd:SYSCALL connect → DC0082 Network Connection Creation

  NSM:Flow conn.log + files.log + ssl.log → DC0085 Network Traffic Content

  NSM:Flow session stats with bytes_out > bytes_in → DC0078 Network Traffic Flow

  Tunable: OutboundEntropyScore ConnectionDuration
  AN0990 macOS

  Detects unauthorized applications or scripts accessing sensitive data followed by establishing encrypted outbound communication to rare external destinations or with abnormal byte ratios.

  macos:unifiedlog eventMessage = 'open', 'sendto', 'connect' → DC0085 Network Traffic Content

  macos:osquery socket_events → DC0078 Network Traffic Flow

  macos:osquery process_events → DC0032 Process Creation

  Tunable: ParentProcessAncestry ProtocolList
  AN0991 ESXi

  Detects VMs sending outbound traffic through non-standard services or to unknown destinations. Exfiltration over reverse shells tunneled via VMkernel or custom payloads routed via hostd/vpxa.

  esxi:vpxa connection attempts and data transmission logs → DC0078 Network Traffic Flow

  esxi:vmkernel network stack module logs → DC0085 Network Traffic Content

  esxi:syslog guest OS outbound transfer logs → DC0055 File Access

  Tunable: GuestOSAllowList TransferSizeThresholdMB ProtocolAllowList

Sigma rules tagged attack.t1041 (5)

T1190 Exploit Public-Facing Application exploitation technique

• DET0080 Exploit Public-Facing Application – multi-signal correlation (request → error → post-exploit process/egress)
  AN0219 Windows

  Adversary sends crafted HTTP/S (or other service) input to an Internet-facing app (IIS/ASP.NET, API, device portal). Chain: (1) abnormal request patterns to public endpoint → (2) elevated 4xx/5xx or unusual methods/paths → (3) server process (w3wp.exe/other service) spawns shell/LOLbins or loads non-standard modules → (4) optional outbound callback from the host/container.

  ApplicationLog:IIS IIS W3C logs in C:\inetpub\logs\LogFiles\W3SVC* (spikes in 5xx, RCE/SQLi/path traversal/JNDI patterns) → DC0038 Application Log Content

  WinEventLog:Sysmon EventCode=1 → DC0032 Process Creation

  WinEventLog:Sysmon EventCode=7 → DC0016 Module Load

  WinEventLog:Sysmon EventCode=3, 22 → DC0082 Network Connection Creation

  Tunable: PublicVIPs SuspiciousPatterns ErrorRateThreshold TimeWindow AllowedChildList
  AN0220 Linux

  Adversary exploits Apache/Nginx/app servers. Chain: (1) suspicious requests in access logs → (2) spike of 5xx or WAF blocks → (3) web server or interpreter (apache2/nginx/php-fpm/node/python) spawns /bin/sh, curl, wget, socat, or writes webshell → (4) outbound callback.

  ApplicationLog:WebServer /var/log/httpd/access_log, /var/log/apache2/access.log, /var/log/nginx/access.log with exploit indicators and burst errors → DC0038 Application Log Content

  auditd:SYSCALL execve → DC0032 Process Creation

  NSM:Flow HTTP payloads with SQLi/LFI/JNDI/deserialization indicators → DC0085 Network Traffic Content

  Tunable: WebProcList ChildToolList BurstThreshold TimeWindow
  AN0221 macOS

  Adversary targets macOS-hosted public services (e.g., nginx, node). Chain: suspicious inbound request → service crash/5xx → service spawns shell or writes file → new outbound connection.

  macos:unifiedlog App/web server logs ingested via unified logging or filebeat (nginx/apache/node). → DC0038 Application Log Content

  macos:unifiedlog exec events where web process starts a shell/tooling → DC0032 Process Creation

  NSM:Flow outbound egress from web host after suspicious request → DC0085 Network Traffic Content

  Tunable: ServiceList TimeWindow
  AN0222 Containers

  Adversary exploits containerized app via ingress or service. Chain: (1) suspicious request in ingress/app logs → (2) container process spawns a shell/exec/sidecar (kubectl exec/docker exec) → (3) egress to Internet or metadata service (169.254.169.254).

  ApplicationLog:Ingress Kubernetes NGINX/Envoy ingress controller logs with anomalous payloads and 5xx spikes → DC0038 Application Log Content

  docker:events Docker/Kubernetes audit of exec/attach (kubectl exec) or unexpected child processes inside container → DC0032 Process Creation

  NSM:Flow Requests towards cloud metadata or command & control from pod IPs → DC0085 Network Traffic Content

  Tunable: IngressNamespaces MetadataEndpoints TimeWindow
  AN0223 IaaS

  Adversary targets cloud-hosted public endpoints. Chain: (1) ALB/ELB/Cloud LB logs show exploit-like inputs or error spikes → (2) workload spawns shell or reaches metadata API → (3) egress to new external hosts.

  ALB:HTTPLogs AWS ALB/ELB/GCP/Azure Application Gateway HTTP logs with unusual methods, long URIs, serialized payloads, 4xx/5xx bursts → DC0085 Network Traffic Content

  AWS:VPCFlowLogs VPC/NSG flow logs for pod/instance egress to Internet or metadata → DC0078 Network Traffic Flow

  Tunable: LBProjects ErrorBurst
  AN0224 ESXi

  Adversary exploits exposed OpenSLP on ESXi or vCenter public endpoints. Chain: inbound request pattern to mgmt service → hostd/vpxd error/crash/restart → unexpected process behavior or datastore access → outbound callback.

  esxi:hostd /var/log/hostd.log anomalies (faults, crashes, restarts) around inbound connections → DC0038 Application Log Content

  NSM:Flow Connections to TCP 427 (SLP) or vCenter web services from untrusted sources → DC0085 Network Traffic Content

  Tunable: MgmtCIDR TimeWindow
  AN0225 Network Devices

  Adversary exploits public admin services on routers/firewalls/switches. Chain: anomalous HTTP/SNMP/SmartInstall inputs → device syslog errors/restarts → config changes/CLI spawn → egress to attacker C2.

  networkdevice:controlplane Syslog from edge devices with HTTP 500s on mgmt portal, SmartInstall events, unexpected CLI commands → DC0038 Application Log Content

  NSM:Flow NetFlow/sFlow for odd egress to Internet from mgmt plane → DC0085 Network Traffic Content

  Tunable: MgmtPorts TrustedAdmins

Sigma rules tagged attack.t1190 (149)

All 149 rules on the technique page →

T1505.003 Web Shell primary impact

• DET0394 Web Shell Detection via Server Behavior and File Execution Chains
  AN1108 Windows

  Unexpected file creation in web directories followed by web server processes (e.g., w3wp.exe) spawning command shells or script interpreters (e.g., cmd.exe, powershell.exe)

  WinEventLog:Sysmon EventCode=11 → DC0039 File Creation

  WinEventLog:Sysmon EventCode=1 → DC0032 Process Creation

  WinEventLog:Security EventCode=4624, 4648 → DC0067 Logon Session Creation

  NSM:Flow Inbound HTTP POST with suspicious payload size or user-agent → DC0085 Network Traffic Content

  Tunable: WebRootPath ParentProcess
  AN1109 Linux

  File creation of unauthorized script (e.g., .php, .sh) in /var/www/html followed by execution of unexpected system utilities (e.g., curl, bash, nc) by apache/nginx

  auditd:SYSCALL new file created in /var/www/html, /srv/http, or similar web root → DC0039 File Creation

  auditd:SYSCALL apache2 or nginx spawning sh, bash, or python interpreter → DC0032 Process Creation

  NSM:Flow POST requests to .php, .jsp, .aspx files with high entropy body → DC0085 Network Traffic Content

  Tunable: WebRootPath PayloadEntropyThreshold TimeWindow
  AN1110 macOS

  Web servers (e.g., httpd) spawning abnormal processes post file upload into /Library/WebServer/Documents or /usr/local/var/www

  macos:unifiedlog httpd spawning bash, zsh, python, or osascript → DC0032 Process Creation

  auditd:SYSCALL file write operations in /Library/WebServer/Documents → DC0061 File Modification

  Tunable: InterpreterName ExecutionParent

Sigma rules tagged attack.t1505.003 (35)

All 35 rules on the technique page →

T1608.001 Upload Malware primary impact

• DET0824 Detection of Upload Malware
  AN1956 PRE

  If infrastructure or patterns in malware have been previously identified, internet scanning may uncover when an adversary has staged malware to make it accessible for targeting. Much of this activity will take place outside the visibility of the target organization, making detection of this behavior difficult. Detection efforts may be focused on post-compromise phases of the adversary lifecycle, such as User Execution or Ingress Tool Transfer .

  Internet Scan None → DC0104 Response Content

Sigma rules tagged attack.t1608.001 (0)

None. MITRE's strategy above is the only public detection guidance for this technique.