EXOTIC LILYG1011 ↗
Has searched for information on targeted individuals on business databases including RocketReach and CrunchBase.1
tfMITRE ATT&CK technique
Search Closed Sources T1597
- Tactic
- Reconnaissance
- Platform
- PRE
- Version
- 1.1
- Created
- 02 October 2020
- Last modified
- 24 October 2025
- Contributor
- Barbara Louis-Sidney (OWN-CERT)
Sub-techniques 20 rules across the family · 0 mapped directly to T1597 · 0 of 2 carry rules
Adversaries may search and gather information about victims from closed (e.g., paid, private, or otherwise not freely available) sources that can be used during targeting. Information about victims may be available for purchase from reputable private sources and databases, such as paid subscriptions to feeds of technical/threat intelligence data. Adversaries may also purchase information from less-reputable sources such as dark web or cybercrime blackmarkets.[1]
ReconResource DevInitial AccessExecutionPersistencePriv EscStealthDef ImpairmentCred AccessDiscoveryLateral MoveCollectionC2ExfiltrationImpact
1
Threat groups45th pct
Threat groups45th percentile · 55% of ATT&CK techniques have more threat groups attributed.0
CampaignsNone recorded
CampaignsNone recorded · 54% of ATT&CK techniques have none either.0
Tools & malwareNone recorded
Tools & malwareNone recorded · 29% of ATT&CK techniques have none either.0
Detection rulesNone recorded
Detection rulesNone recorded · 33% of ATT&CK techniques have none either.Search Closed Sources MITRE reference T1597
45th pctamong all ATT&CK techniques for number of groups
1 group has been recorded using this technique. Newest first; each entry carries MITRE’s procedure text and a link to the group’s full record. Click a name to filter the rules below.
All 1 groups for this technique
Offense vs defense T1597
Is defensive coverage keeping up with adversary use? Eight counts, each ranked against all 697 ATT&CK techniques. Attack sits left, defense right, so a shape leaning left means adversaries are better documented here than defenders are equipped. Hover any spoke for its percentile and the share of techniques that have more. The timeline below shows when each side arrived.
Search Closed Sources detection strategy DET0822
MITRE names one behaviour worth catching for this technique and breaks it into 1 analytic, one per platform. Each carries the log sources it needs and the fields you tune per environment.
Detection of Search Closed Sources
1 platform
AN1954 · PRE
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.
Pre-compromiseM1056
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.