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Unique client computer model was detected via MS-Update protocol

Synopsis

Field
Value

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

7 Days

Required Data

Palo Alto Networks Firewall EAL Logs

ATT&CK Tactic

Initial Access (TA0001)

ATT&CK Technique

Hardware Additions (T1200)

Severity

Informational

Description

A unique client computer model was detected via MS-Update protocol.

Attacker's Goals

  • The Windows Server Update Services enable machines to discover and download software updates from a dedicated update server while providing the necessary client characteristics to install the suitable client version and build.

  • Characteristics may consist of computer model, BIOS version and architecture.

  • A unique computer model in the network may indicate an unauthorized and unmanaged connection to the internal network.

Investigative actions

  • Inspect the legitimacy of the host and its hardware components.

  • Verify that this host is not a newly deployed end-point or virtual machine as part of a legitimate IT activity.

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