This hunt targets the presence of SVCStealer, a Windows service-based credential stealer, by identifying its specific indicators of compromise within the environment. Proactively hunting for these IOCs is critical because SVCStealer often operates silently to extract credentials from service processes, allowing adversaries to establish persistent access and escalate privileges before traditional detections trigger.
Malware Family: SVCStealer Total IOCs: 3 IOC Types: md5_hash, sha256_hash, sha1_hash
| Type | Value | Threat Type | First Seen | Confidence |
|---|---|---|---|---|
| md5_hash | 158a748771be8a06b496a410516d63a9 | payload | 2026-09-11 | 95% |
| sha256_hash | ea449d04d3a664eadbff4e054b1717ce36db82c40d27f179833cf15118de9e73 | payload | 2026-09-11 | 95% |
| sha1_hash | a5926b439887f3f8d4f6b2686c5d4081673ff862 | payload | 2026-09-11 | 95% |
// Hunt for files matching known malicious hashes
// Source: ThreatFox - SVCStealer
let malicious_hashes = dynamic(["158a748771be8a06b496a410516d63a9", "ea449d04d3a664eadbff4e054b1717ce36db82c40d27f179833cf15118de9e73", "a5926b439887f3f8d4f6b2686c5d4081673ff862"]);
DeviceFileEvents
| where SHA256 in (malicious_hashes) or SHA1 in (malicious_hashes) or MD5 in (malicious_hashes)
| project Timestamp, DeviceName, FileName, FolderPath, SHA256, InitiatingProcessFileName
| order by Timestamp desc| Sentinel Table | Notes |
|---|---|
DeviceFileEvents | Ensure this data connector is enabled |
Scenario: A DevOps team uses a custom PowerShell script to automate the deployment of service configurations, which involves reading the Services registry key or querying service metadata via Get-Service and writing logs to a file named svc_backup.log or similar, potentially matching the file path or hash IOCs if the script or its output artifacts are not whitelisted.
C:\Program Files\DevOpsTools\ or specific process names like powershell.exe when the command line contains Get-Service or Set-Service and the working directory is within the known DevOps tooling folder.Scenario: An IT administrator runs a legacy batch script to clean up temporary service files or export service definitions for audit purposes, creating a temporary file in %TEMP% or C:\Windows\Temp with a name that matches one of the SVCStealer IOC file names (e.g., svc.txt or services_dump.txt).
\Temp\ or %TEMP% when the parent process is cmd.exe or powershell.exe and the file age is less than 24 hours, or exclude specific known temporary file names used by internal audit scripts.Scenario: A third-party endpoint management agent (e.g., SCCM, Intune, or a custom MDM solution) periodically syncs service status data to a local cache file or database, which may reside in a path like C:\ProgramData\EndpointAgent\cache\svc_state.dat, potentially triggering a file path or hash IOC if the agent’s cache file name or location overlaps with the IOC list.
C:\ProgramData\EndpointAgent\ or `C:\Program Files\EndpointManagement