diff --git a/rules/windows/process_creation/win_pc_esentutl_webcache.yml b/rules/windows/process_creation/win_pc_esentutl_webcache.yml new file mode 100644 index 000000000..8ebe9fc75 --- /dev/null +++ b/rules/windows/process_creation/win_pc_esentutl_webcache.yml @@ -0,0 +1,25 @@ +title: Esentutl Steals Browser Information +id: 6a69f62d-ce75-4b57-8dce-6351eb55b362 +status: experimental +description: One way Qbot steals sensitive information is by extracting browser data from Internet Explorer and Microsoft Edge by using the built-in utility esentutl.exe +references: + - https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/ + - https://redcanary.com/threat-detection-report/threats/qbot/ +author: frack113 +date: 2022/02/13 +logsource: + category: process_creation + product: windows +detection: + selection: + Image|endswith: \esentutl.exe + CommandLine|contains|all: + - '/r ' + - '\Windows\WebCache' + condition: selection +falsepositives: + - legitimate use +level: medium +tags: + - attack.collection + - attack.t1005 diff --git a/rules/windows/process_creation/win_pc_reg_defender_exclusion.yml b/rules/windows/process_creation/win_pc_reg_defender_exclusion.yml new file mode 100644 index 000000000..6bf0ed714 --- /dev/null +++ b/rules/windows/process_creation/win_pc_reg_defender_exclusion.yml @@ -0,0 +1,32 @@ +title: Registry Defender Exclusions +id: 48917adc-a28e-4f5d-b729-11e75da8941f +status: experimental +description: Qbot used reg.exe to add Defender folder exceptions for folders within AppData and ProgramData. +references: + - https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/ + - https://redcanary.com/threat-detection-report/threats/qbot/ +author: frack113 +date: 2022/02/13 +logsource: + category: process_creation + product: windows +detection: + selection: + Image|endswith: \reg.exe + CommandLine|contains: + - 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\' + - 'HKLM\SOFTWARE\Microsoft\Microsoft Antimalware\Exclusions\Paths' + CommandLine|contains|all: + - 'ADD ' + - '/t ' + - 'REG_DWORD ' + - '/v ' + - '/d ' + - '0' + condition: selection +falsepositives: + - legitimate use +level: medium +tags: + - attack.defense_evasion + - attack.t1562.001