MikeGPT CyberSecurity

# This guidance is based on general platform knowledge and best practices. # UI paths and feature names may vary slightly. Always verify against current Cisco documentation. # --- Immediate Actions --- # 1. Force an immediate update of IPS signatures to get the latest protections. # Navigate to: Objects > Intrusion Rules > Rules > Rule Updates > Update Rules # Ensure automatic updates are scheduled daily. # 2. Create a custom network object group for IOCs from the Ivanti malware report. # Navigate to: Objects > Object Management > Network > Add Network > Add Object # Name: IVANTI_MALWARE_C2_IOCS # Add known malicious IP addresses provided by CISA or other threat feeds. # 3. Create a new Access Control Policy rule to block traffic to the new object group. # Navigate to: Policies > Access Control > Add Rule # Action: Block # Source Zones: Any # Destination Zones: Any # Destination Networks: IVANTI_MALWARE_C2_IOCS # Logging: Enabled # Place this rule near the top of your policy list. # --- Verification Steps --- # 1. Verify IPS signature updates are successful. # Check the Tasks tab in the management console for completion status. # 2. Monitor firewall event logs for hits on the new block rule. # Navigate to: Analysis > Events # Filter by Rule: [Name of your new block rule] # Any logged events indicate successful blocking of traffic to known C2 infrastructure.

rule CISA_Ivanti_EPMM_Malware_Kit_2025_09_20 { meta: description = "Detects potential malware components associated with Ivanti EPMM exploitation as reported by CISA." author = "Threat Rundown" date = "2025-09-20" reference = "https://lifeboat.com/blog/2025/09/cisa-exposes-malware-kits-deployed-in-ivanti-epmm-attacks" strings: $header = { 4D 5A } // PE file header $str1 = "/etc/sysconfig/watchlogd" $str2 = "EPMM_Payload_Exec" $str3 = "IvantiShell.aspx" condition: uint16(0) == 0x5A4D and all of them }

// Splunk Search to detect suspicious child processes from GoAnywhere MFT service // This may indicate successful exploitation of CVE-2025-10035 index=oslogs sourcetype=sysmon EventCode=1 ParentImage="*\\GoAnywhere\\jre\\bin\\java.exe" NOT (Image IN ("*\\cmd.exe", "*\\powershell.exe")) | stats count by host, ParentImage, Image, CommandLine | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`

# Scans a list of servers for file-based IOCs related to the Ivanti EPMM malware kits. $servers = Get-Content -Path .\servers.txt $iocs = @( "C:\Windows\Temp\IvantiShell.aspx", "C:\ProgramData\watchlogd.pid" ) foreach ($server in $servers) { if (Test-Connection -ComputerName $server -Count 1 -Quiet) { Write-Host "[+] Checking $server..." foreach ($ioc in $iocs) { $remotePath = "\\$server\" + $ioc.Replace(":", "

⚫ DETECTION & RESPONSE KIT [Gemini Code Verification Beta]

• ⚠️ Disclaimer: Test all detection logic in non-production environments before deployment.

  1. Vendor Platform Configuration - Cisco Secure Firewall

  [copy]

  # This guidance is based on general platform knowledge and best practices.
  # UI paths and feature names may vary slightly. Always verify against current Cisco documentation.
  
  # --- Immediate Actions ---
  
  # 1. Force an immediate update of IPS signatures to get the latest protections.
  #    Navigate to: Objects > Intrusion Rules > Rules > Rule Updates > Update Rules
  #    Ensure automatic updates are scheduled daily.
  
  # 2. Create a custom network object group for IOCs from the Ivanti malware report.
  #    Navigate to: Objects > Object Management > Network > Add Network > Add Object
  #    Name: IVANTI_MALWARE_C2_IOCS
  #    Add known malicious IP addresses provided by CISA or other threat feeds.
  
  # 3. Create a new Access Control Policy rule to block traffic to the new object group.
  #    Navigate to: Policies > Access Control > Add Rule
  #    Action: Block
  #    Source Zones: Any
  #    Destination Zones: Any
  #    Destination Networks: IVANTI_MALWARE_C2_IOCS
  #    Logging: Enabled
  #    Place this rule near the top of your policy list.
  
  # --- Verification Steps ---
  
  # 1. Verify IPS signature updates are successful.
  #    Check the Tasks tab in the management console for completion status.
  
  # 2. Monitor firewall event logs for hits on the new block rule.
  #    Navigate to: Analysis > Events
  #    Filter by Rule: [Name of your new block rule]
  #    Any logged events indicate successful blocking of traffic to known C2 infrastructure.

  2. YARA Rule for Ivanti EPMM Malware Kits

  [copy]

  rule CISA_Ivanti_EPMM_Malware_Kit_2025_09_20 {
  meta:
  description = "Detects potential malware components associated with Ivanti EPMM exploitation as reported by CISA."
  author = "Threat Rundown"
  date = "2025-09-20"
  reference = "https://lifeboat.com/blog/2025/09/cisa-exposes-malware-kits-deployed-in-ivanti-epmm-attacks"
  strings:
  $header = { 4D 5A } // PE file header
  $str1 = "/etc/sysconfig/watchlogd"
  $str2 = "EPMM_Payload_Exec"
  $str3 = "IvantiShell.aspx"
  condition:
  uint16(0) == 0x5A4D and all of them
  }

  3. SIEM Query — GoAnywhere MFT Post-Exploitation

  [copy]

  // Splunk Search to detect suspicious child processes from GoAnywhere MFT service
  // This may indicate successful exploitation of CVE-2025-10035
  
  index=oslogs sourcetype=sysmon EventCode=1
  ParentImage="*\\GoAnywhere\\jre\\bin\\java.exe"
  NOT (Image IN ("*\\cmd.exe", "*\\powershell.exe"))
  | stats count by host, ParentImage, Image, CommandLine
  | `security_content_ctime(firstTime)`
  | `security_content_ctime(lastTime)`

  4. PowerShell Script — Check for Ivanti IOCs

  [copy]

  # Scans a list of servers for file-based IOCs related to the Ivanti EPMM malware kits.
  
  $servers = Get-Content -Path .\servers.txt
  $iocs = @(
  "C:\Windows\Temp\IvantiShell.aspx",
  "C:\ProgramData\watchlogd.pid"
  )
  
  foreach ($server in $servers) {
  if (Test-Connection -ComputerName $server -Count 1 -Quiet) {
  Write-Host "[+] Checking $server..."
  foreach ($ioc in $iocs) {
  $remotePath = "\\$server\" + $ioc.Replace(":", "$")
  if (Test-Path -Path $remotePath) {
  Write-Warning "[!] IOC FOUND on $server: $ioc"
  } else {
  Write-Host "[-] IOC not found on $server: $ioc"
  }
  }
  } else {
  Write-Error "[x] Cannot connect to $server."
  }
  }

  This rundown should provide a solid overview of the current threat landscape. Thank you to all our cyberheroes for your diligence and hard work. Stay vigilant!

quot;) if (Test-Path -Path $remotePath) { Write-Warning "[!] IOC FOUND on $server: $ioc" } else { Write-Host "[-] IOC not found on $server: $ioc" } } } else { Write-Error "[x] Cannot connect to $server." } }