Detection rules › Sigma
HackTool - SharpWSUS/WSUSpendu Execution
Detects the execution of SharpWSUS or WSUSpendu, utilities that allow for lateral movement through WSUS. Windows Server Update Services (WSUS) is a critical component of Windows systems and is frequently configured in a way that allows an attacker to circumvent internal networking limitations.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Lateral Movement | T1210 Exploitation of Remote Services |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
Stages and Predicates
Stage 1: all of selection_wsuspendu_inject
CommandLine|contains: ' -Inject '
Stage 2: all of selection_wsuspendu_payload
or:
CommandLine|contains: ' -PayloadArgs '
CommandLine|contains: ' -PayloadFile '
Stage 3: all of selection_sharpwsus_commands
or:
CommandLine|contains: ' approve '
CommandLine|contains: ' check '
CommandLine|contains: ' create '
CommandLine|contains: ' delete '
Stage 4: all of selection_sharpwsus_flags
or:
CommandLine|contains: ' /payload:'
CommandLine|contains: ' /payload='
CommandLine|contains: ' /updateid:'
CommandLine|contains: ' /updateid='
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|