offensive_tool_maliciousdllgenerator_dll_side_loadingsysmon

rule offensive_tool_maliciousdllgenerator_dll_side_loadingsysmon {
 meta:
    author = "Den Iuzvyk"
    description = "Detects winword.exe  and UserAccountControlSettings.exe dll side loading attack.  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/yDjiDpQrd2iF"
    version = "0.01"
    created = "2021-03-09"
    category = "sysmon"
    product = "windows"
    mitre = "persistence, defense_evasion, t1073, t1038"

  events:
((($selection_uacs.metadata.product_event_type = "7" and re.regex($selection_uacs.target.process.file.full_path, `.*UserAccountControlSettings\.exe`) and re.regex($selection_uacs.target.process.file.full_path, `.*cryptbase\.dll`)) and not (re.regex($selection_uacs.target.process.file.full_path, `.*Windows\\System32.*`))) or (($selection_uacs.metadata.product_event_type = "7" and re.regex($selection_uacs.target.process.file.full_path, `.*winword\.exe`) and re.regex($selection_uacs.target.process.file.full_path, `.*oart\.dll`)) and not (re.regex($selection_uacs.target.process.file.full_path, `.*Program Files.*\\Microsoft Office\\root\\Office16\\.*`))))

  condition:
    $selection_uacs
}