Malicious Scheduled Task MicrosoftsUpdate Loading DLL Web Shell (via process_creation)

ATT&CK techniques

Execution → Priv Esc

Recon
Resource Dev
Initial Access
Execution
- T1053.005Scheduled Task
Persistence
- T1053.005Scheduled Task
- T1505.003Web Shell
Priv Esc
- T1053.005Scheduled Task
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of a scheduled task named MicrosoftsUpdate via schtasks. In the HrServ APT web shell intrusion the actor registers a task with this masquerading name to load hrserv.dll for persistence, so this misspelled Microsoft-lookalike task name indicates the malicious loader being installed.

Reporting behind it

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Malicious Scheduled Task MicrosoftsUpdate Loading DLL Web Shell (via process_creation)

Pivot detection · T1053.005 · 9 related

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