Query: alert when Detects a suspicious copy operation that tries to copy a program from system (System32, SysWOW64, WinSxS) directories to
Matching passage: Sigma rule: Detects a suspicious copy operation that tries to copy a program from system (System32, SysWOW64, WinSxS) directories to. Logsource: windows / process_creation. Rule: title: Suspicious Copy From or To System Directory id: fff9d2b7-e11c-4a69-93d3-40ef66189767 related: - id: 855bc8b5-2ae8-402e-a9ed-b889e6df1900 type: derived status: test description: 'Detects a suspicious copy operation that tries to copy a program from system (System32, SysWOW64, WinSxS) directories to another on disk. Often used to move LOLBINs such as ''certutil'' or ''desktopimgdownldr'' to a different location with a different name in order to bypass detections based on locations. ' references: - https://www.hybrid-analysis.com/sample/8da5b75b6380a41eee3a399c43dfe0d99eeefaa1fd21027a07b1ecaa4cd96fdd?environmentId=120 - https://web.archive.org/web/20180331144337/https://www.fireeye.com/blog/threat-research/2018/03/sanny-malware-delivery-method-updated-in-recently-observed-attacks.html - https://thedfirreport.com/2023/08/28/html-smuggling-leads-to-domain-wide-ransomware/ author: Florian Roth (Nextron Systems), Markus Neis, Tim Shelton (HAWK.IO), Nasreddine Bencherchali (Nextron Systems) date: 2020-07-03 modified: 2026-03-16 tags: - attack.stealth - attack.t1036.003 logsource: category: process_creation product: windows detection: selection_img_cmd: Image|endswith: \cmd.exe CommandLine|contains: 'copy ' selection_img_pwsh: Image|endswith: - \powershell.exe - \pwsh.exe CommandLine|contains: - copy-item - ' copy ' - 'cpi ' - ' cp ' selection_img_other: - Image|endswith: - \robocopy.exe - \xcopy.exe - OriginalFileName: - robocopy.exe - XCOPY.EXE selection_target: CommandLine|re|i: \s['"]?C:\\Windows\\(?:System32|SysWOW64|WinSxS) filter_optional_avira: Image|endswith: \cmd.exe CommandLine|contains|all: - /c copy - \Temp\ - \avira_system_speedup.exe CommandLine|contains: - C:\Program Files\Avira\ - C:\Program Files (x86)\Avira\ condition: 1 of selection_img_* and selection_target and not 1 of filter_optional_* falsepositives: - Depend on scripts and administrative tools used in the monitored environment (For example an admin scripts like https://www.itexperience.net/sccm-batch-files-and-32-bits-processes-on-64-bits-os/) - When cmd.exe and xcopy.exe are called directly - When the command contains the keywords but not in the correct order level: medium
Near-miss passage: Sigma rule: Detects a suspicious process creation as SYSTEM user (suspicious program or command line parameter). Logsource: windows / process_creation. Rule: title: Suspicious SYSTEM User Process Creation id: 2617e7ed-adb7-40ba-b0f3-8f9945fe6c09 status: test description: Detects a suspicious process creation as SYSTEM user (suspicious program or command line parameter) references: - Internal Research - https://tools.thehacker.recipes/mimikatz/modules author: Florian Roth (Nextron Systems), David ANDRE (additional keywords) date: 2021-12-20 modified: 2025-10-19 tags: - attack.credential-access - attack.privilege-escalation - attack.stealth - attack.t1134 - attack.t1003 - attack.t1027 logsource: category: process_creation product: windows detection: selection: IntegrityLevel: - System - S-1-16-16384 User|contains: - AUTHORI - AUTORI selection_special: - Image|endswith: - \calc.exe - \cscript.exe - \forfiles.exe - \hh.exe - \mshta.exe - \ping.exe - \wscript.exe - CommandLine|re: net\s+user\s+ - CommandLine|contains: - ' -NoP ' - ' -W Hidden ' - ' -decode ' - ' /decode ' - ' /urlcache ' - ' -urlcache ' - ' -e* JAB' - ' -e* SUVYI' - ' -e* SQBFAFgA' - ' -e* aWV4I' - ' -e* IAB' - ' -e* PAA' - ' -e* aQBlAHgA' - vssadmin delete shadows - reg SAVE HKLM - ' -ma ' - Microsoft\Windows\CurrentVersion\Run - .downloadstring( - .downloadfile( - ' /ticket:' - 'dpapi::' - event::clear - event::drop - id::modify - 'kerberos::' - 'lsadump::' - 'misc::' - 'privilege::' - 'rpc::' - 'sekurlsa::' - 'sid::' - 'token::' - vault::cred - vault::list - ' p::d ' - ;iex( - MiniDump filter_main_ping: CommandLine|contains|all: - ping - 127.0.0.1 - ' -n ' filter_vs: Image|endswith: \PING.EXE ParentCommandLine|contains: \DismFoDInstall.cmd filter_config_mgr: ParentImage|contains: :\Packages\Plugins\Microsoft.GuestConfiguration.ConfigurationforWindows\ filter_java: ParentImage|contains: - :\Program Files (x86)\Java\ - :\Program Files\Java\ ParentImage|endswith: \bin\javaws.exe Image|contains: - :\Program Files (x86)\Java\ - :\Program Files\Java\ Image|endswith: \bin\jp2launcher.exe CommandLine|contains: ' -ma ' condition: all of selection* and not 1 of filter_* falsepositives: - Administrative activity - Scripts and administrative tools used in the monitored environment - Monitoring activity level: high