lokibot_detector_windows10_sysmon_behavior


Description

This content detects a sample of the LokiBot as observed in a private malware lab and detonated on a Windows 10 machine. License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md.

Query · yara_l

events:
($selection1.metadata.product_event_type = "1" and (((($selection1.target.process.file.full_path = "C:\\Windows\\SysWOW64\\Fondue.exe" or $selection1.target.process.file.full_path = "C:\\Windows\\System32\\Fondue.exe" or $selection1.target.process.file.full_path = "C:\\Windows\\System32\\OptionalFeatures.exe") and ($selection1.target.process.command_line = "C:\\Windows\\system32\\fondue.exe /enable-feature:NetFx3 /caller-name:mscoreei.dll" or $selection1.target.process.command_line = "C:\\Windows\\sysnative\\FonDUE.EXE /enable-feature:NetFx3 /caller-name:mscoreei.dll" or $selection1.target.process.command_line = "C:\\Windows\\system32\\OptionalFeatures.EXE /enable-feature:NetFx3 /caller-name:mscoreei.dll")) or ($selection1.target.process.file.full_path = "C:\\Windows\\System32\\rundll32.exe" and re.regex($selection1.target.process.command_line, `C:\\Windows\\System32\\rundll32\.exe C:\\Windows\\System32\\shell32\.dll,SHCreateLocalServerRunDll .* -Embedding`))) or ($selection1.target.process.file.full_path = "C:\\Windows\\SysWOW64\\schtasks.exe" and re.regex($selection1.target.process.command_line, `C:\\Windows\\System32\\schtasks\.exe /Create /TN Updates\\&startupname& /XML .*\\AppData\\Local\\Temp.*\.tmp`))))

  condition:
    $selection1
Raw source lokibot_detector_windows10_sysmon_behavior · YARA-L
Esc
Published by chronicle/detection-rules ↗, licensed under Apache 2.0 ↗. Reproduced here unmodified.
rule lokibot_detector_windows10_sysmon_behavior {
 meta:
    author = "Lee Archinal"
    description = "This content detects a sample of the LokiBot as observed in a private malware lab and detonated on a Windows 10 machine.  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/R26MTl0rrjvg"
    version = "0.01"
    created = "2020/08/10"
    product = "windows"
    service = "sysmon"
    mitre = "defense_evasion, execution, persistence, privilege_escalation, t1085, t1053"

  events:
($selection1.metadata.product_event_type = "1" and (((($selection1.target.process.file.full_path = "C:\\Windows\\SysWOW64\\Fondue.exe" or $selection1.target.process.file.full_path = "C:\\Windows\\System32\\Fondue.exe" or $selection1.target.process.file.full_path = "C:\\Windows\\System32\\OptionalFeatures.exe") and ($selection1.target.process.command_line = "C:\\Windows\\system32\\fondue.exe /enable-feature:NetFx3 /caller-name:mscoreei.dll" or $selection1.target.process.command_line = "C:\\Windows\\sysnative\\FonDUE.EXE /enable-feature:NetFx3 /caller-name:mscoreei.dll" or $selection1.target.process.command_line = "C:\\Windows\\system32\\OptionalFeatures.EXE /enable-feature:NetFx3 /caller-name:mscoreei.dll")) or ($selection1.target.process.file.full_path = "C:\\Windows\\System32\\rundll32.exe" and re.regex($selection1.target.process.command_line, `C:\\Windows\\System32\\rundll32\.exe C:\\Windows\\System32\\shell32\.dll,SHCreateLocalServerRunDll .* -Embedding`))) or ($selection1.target.process.file.full_path = "C:\\Windows\\SysWOW64\\schtasks.exe" and re.regex($selection1.target.process.command_line, `C:\\Windows\\System32\\schtasks\.exe /Create /TN Updates\\&startupname& /XML .*\\AppData\\Local\\Temp.*\.tmp`))))

  condition:
    $selection1
}

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