The detection identifies potential troystealer malware activity through known IOCs, indicating an adversary may be exfiltrating sensitive data from compromised systems. SOC teams should proactively hunt for this behavior in Azure Sentinel to detect and mitigate data theft early in the attack lifecycle.
IOC Summary
Malware Family: troystealer Total IOCs: 3 IOC Types: md5_hash, sha256_hash, sha1_hash
| Type | Value | Threat Type | First Seen | Confidence |
|---|---|---|---|---|
| md5_hash | 173e47952a519cedcbc37d7468c0afe5 | payload | 2026-06-11 | 95% |
| sha256_hash | 985a2c4839ac4ded904d1d9b354d2fbe9e24c36e963d171d7e21130a4c0f66d4 | payload | 2026-06-11 | 95% |
| sha1_hash | e562387236169b80911a4081e772ac1151942462 | payload | 2026-06-11 | 95% |
// Hunt for files matching known malicious hashes
// Source: ThreatFox - troystealer
let malicious_hashes = dynamic(["173e47952a519cedcbc37d7468c0afe5", "985a2c4839ac4ded904d1d9b354d2fbe9e24c36e963d171d7e21130a4c0f66d4", "e562387236169b80911a4081e772ac1151942462"]);
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: Legitimate scheduled job using PowerShell for system monitoring
Description: A scheduled task runs a PowerShell script that queries system performance metrics, which may include network or process information that matches the IOCs.
Filter/Exclusion: Exclude processes initiated by the Task Scheduler with the command line containing powershell.exe -Command and the script path is known to be a legitimate monitoring tool (e.g., perfmon.exe or taskmgr.exe).
Scenario: Admin using Process Explorer to inspect processes
Description: An administrator uses Process Explorer (a legitimate tool from Sysinternals) to investigate suspicious processes, which may result in the tool interacting with network resources or executing commands that match the IOCs.
Filter/Exclusion: Exclude processes with the executable name procexp.exe or Process Explorer.exe and filter by user accounts with administrative privileges (e.g., Administrator or Domain Admins).
Scenario: Regular system update or patching activity
Description: A system update or patching process (e.g., Windows Update, SCCM, or Ansible playbook) may involve downloading or executing files that appear to match the IOCs due to similar naming or behavior.
Filter/Exclusion: Exclude processes initiated by known patching tools (e.g., wusa.exe, msiexec.exe, or ansible.exe) and filter by the presence of a known update or patching command line argument.
Scenario: Use of a legitimate remote management tool (e.g., PowerShell Remoting)
Description: A system administrator uses PowerShell Remoting (Invoke-Command) to execute commands on remote systems, which may involve network connections or file operations that match the IOCs.
Filter/Exclusion: Exclude processes where the command line includes Invoke-Command or Enter-PSSession and the source