Query: detect Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child rela in logs
Matching passage: Sigma rule: Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child rela. Logsource: windows / process_creation. Rule: title: Potentially Suspicious Child Process Of DiskShadow.EXE id: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8 related: - id: fa1a7e52-3d02-435b-81b8-00da14dd66c1 type: similar - id: 1dde5376-a648-492e-9e54-4241dd9b0c7f type: similar - id: 56b1dde8-b274-435f-a73a-fb75eb81262a type: similar - id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 type: similar status: test description: Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules. references: - https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/ - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration - https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4 - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow - https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf - https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware - https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/ author: Nasreddine Bencherchali (Nextron Systems) date: 2023-09-15 tags: - attack.stealth - attack.t1218 logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: \diskshadow.exe Image|endswith: - \certutil.exe - \cscript.exe - \mshta.exe - \powershell.exe - \pwsh.exe - \regsvr32.exe - \rundll32.exe - \wscript.exe condition: selection falsepositives: - False postitve can occur in cases where admin scripts levreage the "exec" flag to execute applications level: medium
Near-miss passage: Sigma rule: Detects use of chcp to look up the system locale value as part of host discovery. Logsource: windows / process_creation. Rule: title: Console CodePage Lookup Via CHCP id: 7090adee-82e2-4269-bd59-80691e7c6338 status: test description: Detects use of chcp to look up the system locale value as part of host discovery references: - https://thedfirreport.com/2022/04/04/stolen-images-campaign-ends-in-conti-ransomware/ - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/chcp author: _pete_0, TheDFIRReport date: 2022-02-21 modified: 2024-03-05 tags: - attack.discovery - attack.t1614.001 logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: \cmd.exe ParentCommandLine|contains|windash: - ' -c ' - ' -r ' - ' -k ' Image|endswith: \chcp.com CommandLine|endswith: - chcp - 'chcp ' - 'chcp ' condition: selection falsepositives: - During Anaconda update the 'conda.exe' process will eventually execution the 'chcp' command. - Discord was seen using chcp to look up code pages level: medium regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_chcp_codepage_lookup/info.yml