""ET INFO Possible SMTP Data Exfiltration - File Attachment Named Files.zip""
SID: 2044136
Revision: 1
Class Type: trojan-activity
Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2023_02_06, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, updated_at 2023_02_06
Reference:
-
md5
-
1d9be2dfd54bf4a986c6cd1b7b630750
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 587
Flow: established,to_server
Contents:
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Value: "Content-Type|3a 20|application/x-zip-compressed|3b 0d 0a|"
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Value: "name|3d 22|Files.zip|22 0d 0a|"
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Value: "Content-Transfer-Encoding|3a 20|base64|0d 0a|"
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Value: "Content-Disposition|3a 20|attachment|3b 0d 0a|"
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Value: "filename|3d 22|Files.zip|22 0d 0a 0d 0a|"
Within:
PCRE:
Special Options:
- fast_pattern