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Added dns config files for monitoring #293

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Merged
varunsh-coder merged 3 commits into from
Sep 25, 2022
Merged

Added dns config files for monitoring #293

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50020a4
monitor dns config files
h0x0er Sep 5, 2022
1a4c45f
changed fileNames to constants
h0x0er Sep 14, 2022
7776012
writing annotation if files get overwritten
h0x0er Sep 14, 2022
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8 changes: 8 additions & 0 deletions eventhandler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,14 @@ func (eventHandler *EventHandler) handleFileEvent(event *Event) {
writeDone()
}

if strings.Contains(event.FileName, "daemon.json") {
WriteAnnotation(fmt.Sprintf("[File OverWritten] OverWrite for %s detected", dockerDaemonConfigPath))
}

if strings.Contains(event.FileName, "resolved.conf") {
WriteAnnotation(fmt.Sprintf("[File OverWritten] OverWrite for %s detected", resolvedConfigPath))
}

// Uncomment to log file writes (only uncomment in INT env)
// WriteLog(fmt.Sprintf("file write %s, syscall %s", event.FileName, event.Syscall))

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27 changes: 24 additions & 3 deletions procmon_linux.go
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Expand Up @@ -6,14 +6,15 @@ package main
import (
"fmt"

"io/ioutil"
"os"
"strings"

"github.com/elastic/go-libaudit/v2"
"github.com/elastic/go-libaudit/v2/auparse"
"github.com/elastic/go-libaudit/v2/rule"
"github.com/elastic/go-libaudit/v2/rule/flags"
"github.com/pkg/errors"
"io/ioutil"
"os"
"strings"
)

func (p *ProcessMonitor) MonitorProcesses(errc chan error) {
Expand Down Expand Up @@ -69,6 +70,26 @@ func (p *ProcessMonitor) MonitorProcesses(errc chan error) {

WriteLog("Agent file monitor added")

r, _ = flags.Parse(fmt.Sprintf("-w %s -p w -k %s", dockerDaemonConfigPath, fileMonitorTag))
actualBytes, _ = rule.Build(r)

if err = client.AddRule(actualBytes); err != nil {
WriteLog(fmt.Sprintf("failed to add audit rule %v", err))
errc <- errors.Wrap(err, "failed to add audit rule")
}

WriteLog("Docker's daemon.json file monitor added")

r, _ = flags.Parse(fmt.Sprintf("-w %s -p w -k %s", resolvedConfigPath, fileMonitorTag))
actualBytes, _ = rule.Build(r)

if err = client.AddRule(actualBytes); err != nil {
WriteLog(fmt.Sprintf("failed to add audit rule %v", err))
errc <- errors.Wrap(err, "failed to add audit rule")
}

WriteLog("Systemd's resolved.conf file monitor added")

// syscall connect
r, _ = flags.Parse(fmt.Sprintf("-a exit,always -S connect -k %s", netMonitorTag))

Expand Down