diff --git a/rules/windows/credential_access_posh_veeam_sql.toml b/rules/windows/credential_access_posh_veeam_sql.toml new file mode 100644 index 000000000..742e90e81 --- /dev/null +++ b/rules/windows/credential_access_posh_veeam_sql.toml @@ -0,0 +1,95 @@ +[metadata] +creation_date = "2024/03/14" +integration = ["windows"] +maturity = "production" +min_stack_comments = "New fields added: required_fields, related_integrations, setup" +min_stack_version = "8.3.0" +updated_date = "2024/03/14" + +[rule] +author = ["Elastic"] +description = """ +Identifies PowerShell scripts that can access and decrypt Veeam credentials stored in MSSQL databases. Attackers can use +Veeam Credentials to target backups as part of destructive operations such as Ransomware attacks. +""" +from = "now-9m" +index = ["winlogbeat-*", "logs-windows.powershell*"] +language = "kuery" +license = "Elastic License v2" +name = "PowerShell Script with Veeam Credential Access Capabilities" +references = [ + "https://forums.veeam.com/veeam-backup-replication-f2/recover-esxi-password-in-veeam-t34630.html", + "https://www.crowdstrike.com/blog/anatomy-of-alpha-spider-ransomware/" +] +risk_score = 47 +rule_id = "5c602cba-ae00-4488-845d-24de2b6d8055" +setup = """## Setup + +The 'PowerShell Script Block Logging' logging policy must be enabled. +Steps to implement the logging policy with Advanced Audit Configuration: + +``` +Computer Configuration > +Administrative Templates > +Windows PowerShell > +Turn on PowerShell Script Block Logging (Enable) +``` + +Steps to implement the logging policy via registry: + +``` +reg add "hklm\\SOFTWARE\\Policies\\Microsoft\\Windows\\PowerShell\\ScriptBlockLogging" /v EnableScriptBlockLogging /t REG_DWORD /d 1 +``` +""" +severity = "medium" +tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Credential Access", "Data Source: PowerShell Logs"] +timestamp_override = "event.ingested" +type = "query" + +query = ''' +event.category:process and host.os.type:windows and + powershell.file.script_block_text : ( + ( + "[dbo].[Credentials]" and + ("Veeam" or "VeeamBackup") + ) or + "ProtectedStorage]::GetLocalString" + ) +''' + + +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1003" +name = "OS Credential Dumping" +reference = "https://attack.mitre.org/techniques/T1003/" +[[rule.threat.technique]] +id = "T1555" +name = "Credentials from Password Stores" +reference = "https://attack.mitre.org/techniques/T1555/" + + + +[rule.threat.tactic] +id = "TA0006" +name = "Credential Access" +reference = "https://attack.mitre.org/tactics/TA0006/" +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1059" +name = "Command and Scripting Interpreter" +reference = "https://attack.mitre.org/techniques/T1059/" +[[rule.threat.technique.subtechnique]] +id = "T1059.001" +name = "PowerShell" +reference = "https://attack.mitre.org/techniques/T1059/001/" + + + +[rule.threat.tactic] +id = "TA0002" +name = "Execution" +reference = "https://attack.mitre.org/tactics/TA0002/" + diff --git a/rules/windows/credential_access_veeam_backup_dll_imageload.toml b/rules/windows/credential_access_veeam_backup_dll_imageload.toml new file mode 100644 index 000000000..827f9c06e --- /dev/null +++ b/rules/windows/credential_access_veeam_backup_dll_imageload.toml @@ -0,0 +1,73 @@ +[metadata] +creation_date = "2024/03/14" +integration = ["endpoint"] +maturity = "production" +min_stack_comments = "New fields added: required_fields, related_integrations, setup" +min_stack_version = "8.3.0" +updated_date = "2024/03/14" + +[rule] +author = ["Elastic"] +description = """ +Identifies potential credential decrypt operations by PowerShell or unsigned processes using the Veeam.Backup.Common.dll +library. Attackers can use Veeam Credentials to target backups as part of destructive operations such as Ransomware +attacks. +""" +from = "now-9m" +index = ["logs-endpoint.events.library*"] +language = "eql" +license = "Elastic License v2" +name = "Veeam Backup Library Loaded by Unusual Process" +risk_score = 47 +rule_id = "aaab30ec-b004-4191-95e1-4a14387ef6a6" +severity = "medium" +tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Credential Access", "Data Source: Elastic Defend"] +timestamp_override = "event.ingested" +type = "eql" + +query = ''' +library where host.os.type == "windows" and event.action == "load" and + (dll.name : "Veeam.Backup.Common.dll" or dll.pe.original_file_name : "Veeam.Backup.Common.dll") and + ( + process.code_signature.trusted == false or + process.code_signature.exists == false or + process.name : ("powershell.exe", "pwsh.exe", "powershell_ise.exe") + ) +''' + + +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1003" +name = "OS Credential Dumping" +reference = "https://attack.mitre.org/techniques/T1003/" +[[rule.threat.technique]] +id = "T1555" +name = "Credentials from Password Stores" +reference = "https://attack.mitre.org/techniques/T1555/" + + + +[rule.threat.tactic] +id = "TA0006" +name = "Credential Access" +reference = "https://attack.mitre.org/tactics/TA0006/" +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1059" +name = "Command and Scripting Interpreter" +reference = "https://attack.mitre.org/techniques/T1059/" +[[rule.threat.technique.subtechnique]] +id = "T1059.001" +name = "PowerShell" +reference = "https://attack.mitre.org/techniques/T1059/001/" + + + +[rule.threat.tactic] +id = "TA0002" +name = "Execution" +reference = "https://attack.mitre.org/tactics/TA0002/" + diff --git a/rules/windows/credential_access_veeam_commands.toml b/rules/windows/credential_access_veeam_commands.toml new file mode 100644 index 000000000..5ca51f713 --- /dev/null +++ b/rules/windows/credential_access_veeam_commands.toml @@ -0,0 +1,74 @@ +[metadata] +creation_date = "2024/03/14" +integration = ["windows", "endpoint", "system"] +maturity = "production" +min_stack_comments = "New fields added: required_fields, related_integrations, setup" +min_stack_version = "8.3.0" +updated_date = "2024/03/14" + +[rule] +author = ["Elastic"] +description = """ +Identifies commands that can access and decrypt Veeam credentials stored in MSSQL databases. Attackers can use Veeam +Credentials to target backups as part of destructive operations such as Ransomware attacks. +""" +from = "now-9m" +index = ["winlogbeat-*", "logs-endpoint.events.process-*", "logs-windows.*", "endgame-*", "logs-system.security*"] +language = "eql" +license = "Elastic License v2" +name = "Potential Veeam Credential Access Command" +references = [ + "https://thedfirreport.com/2021/12/13/diavol-ransomware/" +] +risk_score = 47 +rule_id = "b661f86d-1c23-4ce7-a59e-2edbdba28247" +severity = "medium" +tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Tactic: Credential Access", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"] +timestamp_override = "event.ingested" +type = "eql" + +query = ''' +process where host.os.type == "windows" and event.type == "start" and + ( + (process.name : "sqlcmd.exe" or process.pe.original_file_name : "sqlcmd.exe") or + process.args : ("Invoke-Sqlcmd", "Invoke-SqlExecute", "Invoke-DbaQuery", "Invoke-SqlQuery") + ) and + process.args : "*[VeeamBackup].[dbo].[Credentials]*" +''' + + +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1003" +name = "OS Credential Dumping" +reference = "https://attack.mitre.org/techniques/T1003/" +[[rule.threat.technique]] +id = "T1555" +name = "Credentials from Password Stores" +reference = "https://attack.mitre.org/techniques/T1555/" + + + +[rule.threat.tactic] +id = "TA0006" +name = "Credential Access" +reference = "https://attack.mitre.org/tactics/TA0006/" +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1059" +name = "Command and Scripting Interpreter" +reference = "https://attack.mitre.org/techniques/T1059/" +[[rule.threat.technique.subtechnique]] +id = "T1059.001" +name = "PowerShell" +reference = "https://attack.mitre.org/techniques/T1059/001/" + + + +[rule.threat.tactic] +id = "TA0002" +name = "Execution" +reference = "https://attack.mitre.org/tactics/TA0002/" +