Analyzing Forest Blizzard’s custom post-compromise tool for exploiting CVE-2022-38028 to obtain credentials

Microsoft Threat Intelligence is publishing results of our longstanding investigation into activity by the Russian-based threat actor Forest Blizzard (STRONTIUM) using a custom tool to elevate privileges and steal credentials in compromised networks.

Since at least June 2020 and possibly as early as April 2019, Forest Blizzard has used the tool, which we refer to as GooseEgg, to exploit the CVE-2022-38028 vulnerability in Windows Print Spooler service by modifying a JavaScript constraints file and executing it with SYSTEM-level permissions. Microsoft has observed Forest Blizzard using GooseEgg as part of post-compromise activities against targets including Ukrainian, Western European, and North American government, non-governmental, education, and transportation sector organizations.

Read more…
Source: Microsoft

Sign up for our Newsletter


  • Diamond Sleet supply chain compromise distributes a modified CyberLink installer

    November 22, 2023

    Microsoft Threat Intelligence has uncovered a supply chain attack by the North Korea-based threat actor Diamond Sleet (ZINC) involving a malicious variant of an application developed by CyberLink Corp., a software company that develops multimedia software products. This malicious file is a legitimate CyberLink application installer that has been modified to include malicious code that downloads, ...

  • Hacking Employers and Seeking Employment: Two Job-Related Campaigns Bear Hallmarks of North Korean Threat Actors

    November 21, 2023

    Unit 42 researchers recently discovered two separate campaigns targeting job-seeking activities linked to state-sponsored threat actors associated with the Democratic People’s Republic of Korea (DPRK), commonly known as North Korea. The research team call the first campaign “Contagious Interview,” where threat actors pose as employers (often anonymously or with vague identities) to lure software developers into ...

  • Konni Campaign Distributed Via Malicious Document

    November 20, 2023

    FortiGuard Labs recently identified the use of a Russian-language Word document equipped with a malicious macro in the ongoing Konni campaign. Despite the document’s creation date of September, ongoing activity on the campaign’s C2 server is evident in internal telemetry. This campaign relies on a remote access trojan (RAT) capable of extracting information and executing commands ...

  • Data stolen in hack of nuclear energy testing facility Idaho National Lab

    November 20, 2023

    The Idaho National Laboratory, part of the U.S. Department of Energy and one of the country’s foremost advanced nuclear energy testing labs, has suffered a breach that released the details of employees online. A hacking group called SiegeSec took responsibility for the breach, which occurred Sunday night. In a statement to local media, INL media spokesperson ...

  • Stately Taurus targets the Philippines as tensions flare in the South Pacific

    November 17, 2023

    Tensions between China and the Philippines have risen sharply over the past several months. Coinciding with these real-world events, Unit 42 researchers observed three Stately Taurus campaigns during the month of August. These campaigns are assessed to have targeted entities in the South Pacific including the Philippines government. The campaigns leveraged legitimate software including Solid PDF ...

  • Into The Trash: Analyzing LitterDrifter

    November 17, 2023

    Gamaredon, also known as Primitive Bear, ACTINIUM, and Shuckworm, is a unique player in the Russian espionage ecosystem that targets a wide variety of almost exclusively Ukrainian entities. While researchers often struggle to uncover evidence of Russian espionage activities, Gamaredon is notably conspicuous. The group behind it conducts large-scale campaigns while still primarily focusing on regional ...