Threats Tagged 'hwp'

The 'Artemis' campaign, conducted by APT37, utilizes malicious HWP documents with embedded OLE objects to initiate attacks. The threat actor impersonates legitimate entities to gain trust before delivering the payload. The attack chain combines HWP execution with DLL side-loading techniques to evade detection. Steganography is employed to conceal malicious code, and legitimate processes are abused to load malicious DLLs. The campaign targets South Korean organizations, exploiting the widespread use of the HWP format. Multiple stages of encryption and decryption are used to obfuscate the final RoKRAT payload. The threat actor leverages cloud services like Yandex and pCloud for command and control infrastructure, complicating detection and attribution efforts.

MediumMalwareSouth KoreaUnited KingdomGermany+2#cloud infrastructure#rokrat#south korea

The Kimsuky group has launched a sophisticated phishing attack disguised as a request for paper review from a professor. The attack involves a password-protected HWP document with a malicious OLE object, which creates six files upon opening. When executed, these files perform various malicious activities, including collecting system information, downloading additional files, and establishing remote access through AnyDesk. The threat actors use legitimate software and cloud storage services like Dropbox as part of their attack infrastructure. The malware hides its presence by concealing AnyDesk's interface, making detection difficult for users. This case highlights the evolving tactics of APT groups and the importance of cautious handling of files from unknown sources.

MediumCampaignGermanyFranceUnited Kingdom+3#apt#dropbox#remote-access

The report details a sophisticated APT attack targeting South Korea, utilizing spear-phishing techniques and malicious HWP files distributed through a popular Korean messenger service. The APT37 group exploited trust-based tactics, using compromised accounts to spread malware through group chats. The malicious files contained OLE objects that executed PowerShell commands and shellcode, ultimately deploying the RoKRAT malware. This file-less attack method allowed for information gathering and potential remote control of infected systems. The attackers used pCloud for data exfiltration and command-and-control communication. The report emphasizes the importance of endpoint detection and response (EDR) systems to combat such evolving threats.

MediumMalwareSouth KoreaGermanyUnited Kingdom+2#ole#file-less#spear-phishing