Query: detection rule: Detects file downloads directly from IP address URL using curl.exe
Matching passage: Sigma rule: Detects file downloads directly from IP address URL using curl.exe. Logsource: windows / process_creation. Rule: title: File Download From IP URL Via Curl.EXE id: 9cc85849-3b02-4cb5-b371-3a1ff54f2218 related: - id: 5cb299fc-5fb1-4d07-b989-0644c68b6043 type: similar status: test description: Detects file downloads directly from IP address URL using curl.exe references: - https://labs.withsecure.com/publications/fin7-target-veeam-servers - https://github.com/WithSecureLabs/iocs/blob/344203de742bb7e68bd56618f66d34be95a9f9fc/FIN7VEEAM/iocs.csv - https://github.com/pr0xylife/IcedID/blob/8dd1e218460db4f750d955b4c65b2f918a1db906/icedID_09.28.2023.txt author: Nasreddine Bencherchali (Nextron Systems) date: 2023-10-18 tags: - attack.execution logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \curl.exe - OriginalFileName: curl.exe selection_ip: CommandLine|re: ://[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3} selection_http: CommandLine|contains: http selection_flag: CommandLine|contains: - ' -O' - --remote-name - --output filter_main_ext: CommandLine|endswith: - .bat - .bat" - .dat - .dat" - .dll - .dll" - .exe - .exe" - .gif - .gif" - .hta - .hta" - .jpeg - .jpeg" - .log - .log" - .msi - .msi" - .png - .png" - .ps1 - .ps1" - .psm1 - .psm1" - .vbe - .vbe" - .vbs - .vbs" - .bat' - .dat' - .dll' - .exe' - .gif' - .hta' - .jpeg' - .log' - .msi' - .png' - .ps1' - .psm1' - .vbe' - .vbs' condition: all of selection_* and not 1 of filter_main_* falsepositives: - Unknown level: medium regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_curl_download_direct_ip_exec/info.yml
Near-miss passage: Sigma rule: Detects the execution of netsh with "add helper" flag in order to add a custom helper DLL. This technique can be abused. Logsource: windows / process_creation. Rule: title: Potential Persistence Via Netsh Helper DLL id: 56321594-9087-49d9-bf10-524fe8479452 related: - id: c90362e0-2df3-4e61-94fe-b37615814cb1 type: similar - id: e7b18879-676e-4a0e-ae18-27039185a8e7 type: similar status: test description: 'Detects the execution of netsh with "add helper" flag in order to add a custom helper DLL. This technique can be abused to add a malicious helper DLL that can be used as a persistence proxy that gets called when netsh.exe is executed. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.007/T1546.007.md - https://github.com/outflanknl/NetshHelperBeacon - https://web.archive.org/web/20160928212230/https://www.adaptforward.com/2016/09/using-netshell-to-execute-evil-dlls-and-persist-on-a-host/ author: Victor Sergeev, oscd.community date: 2019-10-25 modified: 2023-11-28 tags: - attack.privilege-escalation - attack.persistence - attack.t1546.007 - attack.s0108 logsource: category: process_creation product: windows detection: selection_img: - OriginalFileName: netsh.exe - Image|endswith: \netsh.exe selection_cli: CommandLine|contains|all: - add - helper condition: all of selection_* falsepositives: - Unknown level: medium