Sleep with one eye open: how Librarian Ghouls steal data by night


Librarian Ghouls, also known as “Rare Werewolf” and “Rezet”, is an APT group that targets entities in Russia and the CIS.

The group has remained active through May 2025, consistently targeting Russian companies. A distinctive feature of this threat is that the attackers favor using legitimate third-party software over developing their own malicious binaries. The malicious functionality of the campaign described in this article is implemented through command files and PowerShell scripts. The attackers establish remote access to the victim’s device, steal credentials, and deploy an XMRig crypto miner in the system. Kaspersky research has uncovered new tools within this APT group’s arsenal, which they will elaborate on in this article.

Read more…
Source: Kaspersky


Sign up for our Newsletter
The latest news and insights delivered right to your inbox.


Related:

  • RedCurl corporate espionage hackers resume attacks with updated tools

    November 18, 2021

    A crew of highly-skilled hackers specialized in corporate espionage has resumed activity, one of their victims this year being a large wholesale company in Russia. Tracked as RedCurl, the group attacked the Russian business twice this year, each time using carefully constructed spear-phishing emails with initial-stage malware. Active since 2018, RedCurl is responsible for at least 30 ...

  • Iranian targeting of IT sector on the rise

    November 18, 2021

    Iranian threat actors are increasing attacks against IT services companies as a way to access their customers’ networks. This activity is notable because targeting third parties has the potential to exploit more sensitive organizations by taking advantage of trust and access in a supply chain. Microsoft has observed multiple Iranian threat actors targeting the IT ...

  • Spear-Phishing Campaign Exploits Glitch Platform to Steal Credentials

    November 18, 2021

    A long-term spear-phishing campaign is targeting employees of major corporations with emails containing PDFs that link to short-lived Glitch apps hosting credential-harvesting SharePoint phishing pages, researchers have found. Researchers from DomainTools discovered the suspicious PDFs – which themselves do not include malicious content – back in July, wrote Senior Security Researcher Chad Anderson, in a report ...

  • Android malware BrazKing returns as a stealthier banking trojan

    November 18, 2021

    The BrazKing Android banking trojan has returned with dynamic banking overlays and a new implementation trick that enables it to operate without requesting risky permissions. A new malware sample was analyzed by IBM Trusteer researchers who found it outside the Play Store, on sites where people end up after receiving smishing (SMS) messages. These HTTPS sites warn ...

  • Hackers deploy Linux malware, web skimmer on e-commerce servers

    November 18, 2021

    Security researchers discovered that attackers are also deploying a Linux backdoor on compromised e-commerce servers after injecting a credit card skimmer into online shops’ websites. The PHP-coded web skimmer (a script designed to steal and exfiltrate customers’ payment and personal info) is added and camouflaged as a .JPG image file in the /app/design/frontend/ folder. The attackers use ...

  • FBI: An APT Group Exploiting a 0-day in FatPipe WARP, MPVPN, and IPVPN Software

    November 17, 2021

    As of November 2021, FBI forensic analysis indicated exploitation of a 0-day vulnerability in the FatPipe MPVPN® device software1 going back to at least May 2021. The vulnerability allowed APT actors to gain access to an unrestricted file upload function to drop a webshell for exploitation activity with root access, leading to elevated privileges and ...