PCAP investigation summary

What happened

The host 10.11.11.203 (TUCKER-WIN7-PC, candice.tucker) downloaded a file identified as a Windows executable (PE) from http://acjabogados.com/40group.tiff with SHA-256 8d5d36c8ffb0a9c81b145aa40c1ff3475702fb0b5f9e08e0577bdc405087e635.

Multiple hosts in the environment, including TUCKER-WIN7-PC and others, retrieved various JavaScript files from reputable domains with no evidence in this data set of those scripts being malicious or executed beyond receiving them over HTTP.

Who was involved

• 10.11.11.203 is identified as TUCKER-WIN7-PC and user candice.tucker.
• User candice.tucker is associated with 10.11.11.203 (TUCKER-WIN7-PC).
• TUCKER-WIN7-PC assigned to 10.11.11.203.

What remains uncertain

• It is not confirmed whether the downloaded PE file on TUCKER-WIN7-PC was executed or resulted in compromise, as the capture contains only the transfer and no endpoint activity.
• Reputation and threat context for the downloaded executable are not fully established due to rate limiting or lack of matches in enrichment sources at the time of analysis.

Next check

• Further investigate the executable 8d5d36c8ffb0a9c81b145aa40c1ff3475702fb0b5f9e08e0577bdc405087e635 on TUCKER-WIN7-PC for signs of execution or persistent compromise.

Analyst-review draft. Exact evidence references and provider provenance are retained in the structured record.