Applied Cybernetics Group
T1684.001 Impersonation
coverage gap
- Technique
T1684.001- Tactics
- Defense Evasion
- Research, 90 days
- 1
- KEV CVEs mapped
- 0
- SigmaHQ rules
- 0
- Elastic, Splunk
- 0
- thrunt rules
- 0
- Upstream
- https://attack.mitre.org/techniques/T1684/001
MITRE description
Adversaries may impersonate a trusted person or organization in order to persuade and trick a target into performing some action on their behalf. For example, adversaries may communicate with victims (via [Phishing for Information](https://attack.mitre.org/techniques/T1598), [Phishing](https://attack.mitre.org/techniques/T1566), or [Internal Spearphishing](https://attack.mitre.org/techniques/T1534)) while impersonating a known sender such as an executive, colleague, or third-party vendor. Established trust can then be leveraged to accomplish an adversary’s ultimate goals, possibly against multiple victims. In many cases of business email compromise or email fraud campaigns, adversaries use impersonation to defraud victims -- deceiving them into sending money or divulging information that ultimately enables [Financial Theft](https://attack.mitre.org/techniques/T1657). Adversaries will often also use social engineering techniques such as manipulative and persuasive language in email subject lines and body text such as `payment`, `request`, or `urgent` to push the victim to act quickly before malicious activity is detected. These campaigns are often specifically targeted against people who, due to job roles and/or accesses, can carry out the adversary’s goal. Impersonation is typically preceded by reconnaissance techniques such as [Gather Victim Identity Information](https://attack.mitre.org/techniques/T1589) and [Gather Victim Org Information](https://attack.mitre.org/techniques/T1591) as well as acquiring infrastructure such as email domains (i.e. [Domains](https://attack.mitre.org/techniques/T1583/001)) to substantiate their false identity.(Citation: Crowdstrike BEC) There is the potential for multiple victims in campaigns involving impersonation. For example, an adversary may Compromise Accounts targeting one organization which can then be used to support impersonation against other entities.(Citation: VEC)
Research citing this technique
Reports and advisories from the last 90 days that cite this technique.
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2026-10-15GuidePoint GRIT: Behind the Help Desk Call: Insights from the Leaked Chats of an IT-Impersonation Extortion Crew
Detection coverage
No rule covers this technique yet. No SigmaHQ, Elastic or Splunk production rule carries its tag, and thrunt hasn't written one. Techniques like this are where the next thrunt rules come from; the gap map has the full list.