HIGH: Honeypot SMB Scanner Events Report



This report identifies hosts that have been observed performing SMB Server Message Block scanning activity, including exploitation attempts.

SMB is one of the most common vectors of attacks. This includes brute forcing attacks and exploitation of RCE vulnerabilities.

If you receive a report of SMB scanning (or exploitation attempts) please investigate the scanning IP – it may be compromised.

You can track SMB scanning activities as observed in our honeypots on our Dashboard, by selecting source honeypot and tag smb-scan. For example – https://dashboard.shadowserver.org/statistics/combined/time-series/?date_range=7&source=honeypot&tag=smb-scan&group_by=geo&style=stacked

Severity levels are described here.

You can learn more on our reports in general in our Overview of Free Public Benefit Shadowserver Reports presentation, which also explains example Use Cases.

Filename: event4_honeypot_smb_scan



  • timestamp
    Timestamp when the IP was seen in UTC+0
  • protocol
    Packet type of the connection traffic (UDP/TCP)
  • src_ip
    The IP of the device in question
  • src_port
    Source port of the IP connection
  • src_asn
    ASN of the source IP
  • src_geo
    Country of the source IP
  • src_region
    Region of the source IP
  • src_city
    City of the source IP
  • src_hostname
    Reverse DNS of the source IP
  • src_naics
    North American Industry Classification System Code
  • src_sector
    Sector to which the IP in question belongs; e.g. Communications, Commercial
  • device_vendor
    Source device vendor
  • device_type
    Source device type
  • device_model
    Source device model
  • severity
    Severity level
  • dst_ip
    Destination IP
  • dst_port
    Destination port of the IP connection
  • dst_asn
    ASN of the destination IP
  • dst_geo
    Country of the destination IP
  • dst_region
    Region of the destination IP
  • dst_city
    City of the destination IP
  • dst_hostname
    Reverse DNS of the destination IP
  • dst_naics
    North American Industry Classification System Code
  • dst_sector
    Sector to which the IP in question belongs; e.g. Communications, Commercial
  • public_source
    Source of the event data
  • infection
    Set to SMB
  • family
    Malware family or campaign associated with the event
  • tag
    Event attributes
  • application
    Application name associated with the event
  • version
    Software version associated with the event
  • event_id
    Unique identifier assigned to the source IP or event
  • session_tags
    Array of additional tags describing attack characteristics,
  • vulnerability_enum
    Vulnerability or exploit schema being used, for example CVE or EDB
  • vulnerability_id
    Id of vulnerability or exploit, for example CVE-2020-5902
  • vulnerability_class
    If set, then CVSS
  • vulnerability_score
    CVSS base score
  • vulnerability_severity
    CVSS severity, for example, CRITICAL or HIGH
  • vulnerability_version
    CVSS version of framework used, for example 3.1 or 3.0
  • threat_framework
    Set to MITRE ATT&CK
  • threat_tactic_id
    Array of tactic ids, example TA0001;TA0002
  • threat_technique_id
    Array of technique ids, example T1190;T1059
  • target_vendor
    Vendor that is being targeted, example Linksys
  • target_product
    Product that is being targeted, example Linksys E-Series
  • target_class
    Class of device/software being targeted, for example router
  • command
    SMB commands
  • flags
    SMB flags
  • supported_protocols
    Supported SMB protocol versions
  • session_tags
    Session tags, if any


"2010-02-10 00:00:00",tcp,,53966,64512,ZZ,Region,City,node01.example.com,0,"Communications, Service Provider, and Hosting Service",,,,high,,445,65534,ZZ,Region,City,node01.example.net,0,,,smb-scan,,,smb,1,,,,,,,,,,,,,,negotiate-protocol,canonicalized-paths;case-insensitive;long-names;nt-status;oplock;unicode,"NT LM 0.12;SMB 2.002;SMB 2.???",
"2010-02-10 00:00:01",tcp,,53375,64512,ZZ,Region,City,node02.example.com,0,"Communications, Service Provider, and Hosting Service",,,,high,,445,65534,ZZ,Region,City,node02.example.net,0,,,smb-scan,,,smb,1,,,,,,,,,,,,,,negotiate-protocol,canonicalized-paths;case-insensitive;long-names;nt-status;oplock;unicode,"NT LM 0.12;SMB 2.002;SMB 2.???",
"2010-02-10 00:00:02",tcp,,54288,64512,ZZ,Region,City,node03.example.com,0,"Communications, Service Provider, and Hosting Service",,,,high,,445,65534,ZZ,Region,City,node03.example.net,0,,,smb-scan,,,smb,1,,,,,,,,,,,,,,negotiate-protocol,canonicalized-paths;case-insensitive;long-names;nt-status;oplock;unicode,"NT LM 0.12;SMB 2.002;SMB 2.???",

Our 128 Report Types