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Gather Victim Network Information: IP Addresses

ID Name
T1590.001 Domain Properties
T1590.002 DNS
T1590.003 Network Trust Dependencies
T1590.004 Network Topology
T1590.005 IP Addresses
T1590.006 Network Security Appliances

Adversaries may gather the victim's IP addresses that can be used during targeting. Public IP addresses may be allocated to organizations by block, or a range of sequential addresses. Information about assigned IP addresses may include a variety of details, such as which IP addresses are in use. IP addresses may also enable an adversary to derive other details about a victim, such as organizational size, physical location(s), Internet service provider, and or where/how their publicly-facing infrastructure is hosted.

Adversaries may gather this information in various ways, such as direct collection actions via Active Scanning or Phishing for Information. Information about assigned IP addresses may also be exposed to adversaries via online or other accessible data sets (ex: Search Open Technical Databases).[1][2][3] Gathering this information may reveal opportunities for other forms of reconnaissance (ex: Active Scanning or Search Open Websites/Domains), establishing operational resources (ex: Acquire Infrastructure or Compromise Infrastructure), and/or initial access (ex: External Remote Services).

Law Assessment

Article Assessment
None assessed
There could be an assessment of a subtechnique.

Forensics

Forensic Domain Assessment
None assessed
There could be a forensic assessment of a subtechnique.
ID: T1590.005
Sub-technique of:  T1590
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Tactic: Reconnaissance
ⓘ
Platforms: PRE
Version: 1.0
Created: 02 October 2020
Last Modified: 15 April 2021
Schweizerisches Strafgesetzbuch (StGB)
Relevant Articles:
Relevant Forensic Domains:

Provided by LAYER 8

Procedure Examples

ID Name Description
G0138 Andariel

Andariel has limited its watering hole attacks to specific IP address ranges.[4]
G0125 HAFNIUM

HAFNIUM has obtained IP addresses for publicly-accessible Exchange servers.[5]

Mitigations

ID Mitigation Description
M1056 Pre-compromise

This technique cannot be easily mitigated with preventive controls since it is based on behaviors performed outside of the scope of enterprise defenses and controls. Efforts should focus on minimizing the amount and sensitivity of data available to external parties.

Detection

Much of this activity may have a very high occurrence and associated false positive rate, as well as potentially taking place outside the visibility of the target organization, making detection difficult for defenders.

Detection efforts may be focused on related stages of the adversary lifecycle, such as during Initial Access.

References

  1. NTT America. (n.d.). Whois Lookup. Retrieved October 20, 2020.
  2. Hacker Target. (n.d.). DNS Dumpster. Retrieved October 20, 2020.
  3. CIRCL Computer Incident Response Center. (n.d.). Passive DNS. Retrieved October 20, 2020.
  1. AhnLab. (2018, June 23). Targeted attacks by Andariel Threat Group, a subgroup of the Lazarus. Retrieved September 29, 2021.
  2. Gruzweig, J. et al. (2021, March 2). Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities. Retrieved March 3, 2021.