HackTool - Potential Impacket Lateral Movement Activity

Severity: high
Author: Ecco, oscd.community, Jonhnathan Ribeiro, Tim Rauch
Source: upstream

Detects wmiexec/dcomexec/atexec/smbexec from Impacket framework

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1047` Windows Management Instrumentation
Lateral Movement	`T1021.003` Remote Services: Distributed Component Object Model

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `1 of selection_other`

or:
ParentImage|endswith: '\explorer.exe'
ParentImage|endswith: '\mmc.exe'
ParentImage|endswith: '\services.exe'
ParentImage|endswith: '\wmiprvse.exe'
CommandLine|contains: '&1'
CommandLine|contains: '/Q'
CommandLine|contains: '/c'
CommandLine|contains: '\\\\127.0.0.1\\'
CommandLine|contains: cmd.exe

Stage 2: `1 of selection_atexec`

or:
ParentCommandLine|contains: 'svchost.exe -k netsvcs'
ParentCommandLine|contains: taskeng.exe
CommandLine|contains: '&1'
CommandLine|contains: '/C'
CommandLine|contains: 'Windows\Temp\'
CommandLine|contains: cmd.exe

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	`&1` `/C` corpus 3 (sigma 3) `/Q` `/c` corpus 7 (sigma 7) `Windows\Temp\` `\\\\127.0.0.1\\` `cmd.exe` corpus 2 (sigma 2)
`ParentCommandLine`	match	`svchost.exe -k netsvcs` `taskeng.exe`
`ParentImage`	ends_with	`\explorer.exe` corpus 11 (sigma 11) `\mmc.exe` corpus 3 (sigma 3) `\services.exe` corpus 7 (sigma 7) `\wmiprvse.exe` corpus 3 (sigma 3)