A group of threats linked to North Korea, known as Jasper Sleet, is employing sophisticated tactics to infiltrate legitimate companies by creating fake professional identities. This actor has taken advantage of the increase in remote work driven by the COVID-19 pandemic, which has transformed the hiring landscape and access to resources within organizations.
Taking Advantage of Telecommuting
The growing dependence on online environments and remote access tools has created new opportunities for malicious actors. Jasper Sleet uses artificial intelligence technologies to develop customized digital identities and meticulously prepares to appear as a genuine candidate, tailoring his applications according to the specific requirements of each position.
According to an analysis by Microsoft, the group uses workflows in human resources software like Workday through programmatic API calls to access data on job postings and active applications. This technique is characterized by its accuracy and repeatability, indicating a more calculated approach than that of a typical applicant.

Once hired, Jasper Sleet has access to various collaborative tools and cloud environments of the organization, allowing him to move freely between sensitive files, eventually leading to possible data theft or extortion. Microsoft has observed patterns of suspicious activity, including “impossible travel” alerts in the months following the onboarding of new employees.
To counter this threat, it is recommended that security and human resources teams work closely together and implement training measures on social engineering. Identifying warning signs in the hiring process may be more effective than trying to detect the threat once the actor already has access to sensitive information.

