Adversaries may send phishing messages to elicit sensitive information that can be used during targeting. Phishing for information is an attempt to trick targets into divulging information, frequently credentials or other actionable information. Phishing for information is different from Phishing in that the objective is gathering data from the victim rather than executing malicious code.
All forms of phishing are electronically delivered social engineering. Phishing can be targeted, known as spearphishing. In spearphishing, a specific individual, company, or industry will be targeted by the adversary. More generally, adversaries can conduct non-targeted phishing, such as in mass credential harvesting campaigns.
Adversaries may also try to obtain information directly through the exchange of emails, instant messages, or other electronic conversation means.[1][2][3][4][5] Victims may also receive phishing messages that direct them to call a phone number where the adversary attempts to collect confidential information.[6]
Phishing for information frequently involves social engineering techniques, such as posing as a source with a reason to collect information (ex: Establish Accounts or Compromise Accounts) and/or sending multiple, seemingly urgent messages. Another way to accomplish this is by Email Spoofing[7] the identity of the sender, which can be used to fool both the human recipient as well as automated security tools.[8]
Phishing for information may also involve evasive techniques, such as removing or manipulating emails or metadata/headers from compromised accounts being abused to send messages (e.g., Email Hiding Rules).[9][10]
| ID | Name | Description |
|---|---|---|
| G0007 | APT28 |
APT28 has used spearphishing to compromise credentials.[11][12] |
| G0094 | Kimsuky |
Kimsuky has used tailored spearphishing emails to gather victim information including contat lists to identify additional targets.[13] |
| G1036 | Moonstone Sleet |
Moonstone Sleet has interacted with victims to gather information via email.[14] |
| G1015 | Scattered Spider |
Scattered Spider has used a combination of credential phishing and social engineering to capture one-time-password (OTP) codes.[15] |
| G0128 | ZIRCONIUM |
ZIRCONIUM targeted presidential campaign staffers with credential phishing e-mails.[16] |
| ID | Mitigation | Description |
|---|---|---|
| M1054 | Software Configuration |
Use anti-spoofing and email authentication mechanisms to filter messages based on validity checks of the sender domain (using SPF) and integrity of messages (using DKIM). Enabling these mechanisms within an organization (through policies such as DMARC) may enable recipients (intra-org and cross domain) to perform similar message filtering and validation.[17][18] |
| M1017 | User Training |
Users can be trained to identify social engineering techniques and spearphishing attempts. |
| ID | Name | Analytic ID | Analytic Description |
|---|---|---|---|
| DET0823 | Detection of Phishing for Information | AN1955 |
Monitor and analyze traffic patterns and packet inspection associated to protocol(s) that do not follow the expected protocol standards and traffic flows (e.g extraneous packets that do not belong to established flows, gratuitous or anomalous traffic patterns, anomalous syntax, or structure). Consider correlation with process monitoring and command line to detect anomalous processes execution and command line arguments associated to traffic patterns (e.g. monitor anomalies in use of files that do not normally initiate connections for respective protocol(s)). Monitor call logs from corporate devices to identify patterns of potential voice phishing, such as calls to/from known malicious phone numbers. |