Ingress Tool Transfer - Certutil

Requête originale, sans modification.

// Set the time span for the query.
let Timeframe = 1h;
// Set the HashTimeframe for the hash lookup; longer makes it more accurate, but obviously also more resource-intensive.
let HashTimeframe = 14d;
// Get all known SHA1 hashes for certutil executions or renamed files formerly named certutil.
let CertUtilPESha1=materialize(DeviceProcessEvents | where Timestamp > ago(HashTimeframe)| where FileName has "certutil"  | where isnotempty(SHA1) | summarize sha1=make_set(SHA1));
let CertUtilFESha1=materialize(DeviceFileEvents | where Timestamp > ago(HashTimeframe)| where PreviousFileName contains "certutil" or FileName contains "certutil"  | where isnotempty(SHA1) | summarize sha1=make_set(SHA1));
DeviceProcessEvents
| where Timestamp >= ago(Timeframe)
// Get all executions by processes with a SHA1 hash that is or was named certutil.
| where SHA1 in (CertUtilPESha1) or SHA1 in (CertUtilFESha1) or FileName =~ "certutil.exe" or ProcessCommandLine has "certutil"
// Create a new field called CleanProcessCommandLine which gets populated with the value of ProcessCommandLine as Windows parses it for execution, 
// removing any potential command line obfuscation. 
| extend CleanProcessCommandLine=parse_command_line(ProcessCommandLine, "windows")
// Search for de-obfuscated commands used. 
// Urlcache is the documented attribute. However, url is also accepted.
// Verifyctl is the documented attribute. However, verify is also accepted.
| where CleanProcessCommandLine has_any ("decode", "encode", "verify","url") 
| order by Timestamp