Gwisin Ransomware Targeting Korean Companies
The cases of Gwisin ransomware attacking Korean companies are recently on the rise. It is being distributed to target specific companies. It is similar to Magniber in that it operates in the MSI installer form. Yet unlike Magniber which targets random individuals, Gwisin does not perform malicious behaviors on its
AppleSeed Being Distributed to Maintenance Company of Military Bases
The ASEC analysis team has recently discovered a case of AppleSeed being distributed to a certain maintenance company of military bases. AppleSeed is a backdoor malware mainly used by the Kimsuky group and is actively being distributed to multiple attack targets as of late. AppleSeed Disguised as Purchase Order and
AppleSeed Disguised as Purchase Order and Request Form Being Distributed
The ASEC analysis team has recently discovered the distribution of AppleSeed disguised as purchase orders and request forms. AppleSeed is a backdoor malware mainly used by the Kimsuky group. It stays in the system and performs malicious behaviors by receiving commands from attackers. Analysis Report on Kimsuky Group’s APT Attacks
APT Attacks Using Word File Disguised as Donation Receipts for Uljin Wildfire (Kimsuky)
At the beginning of March this year, a wildfire broke out in the Samcheok and Wuljin area, and numerous people from all over Korea donated to help the victims and restore the damages. Amidst such a situation, the ASEC analysis team discovered the attacker’s attempt at launching APT attacks disguised
VBS Script Disguised as PDF File Being Distributed (Kimsuky)
On March 23rd, the ASEC analysis team has discovered APT attacks launched by an attack group presumed to be Kimsuky, and they targeted certain Korean companies. Upon running the script file with the VBS extension, the malware runs the innocuous PDF file that exists internally to trick the user into
APT Attack Using Word Files About Cryptocurrency (Kimsuky)
On March 21st, the ASEC analysis team has discovered the Kimsuky group’s APT attacks that use Word files containing information about cryptocurrency. A total of three Word files were discovered that were used as baits for the attacks. The macro’s author and its execution flow are identical to that which
Word Document Attack Targeting Companies Specialized in Carbon Emissions
On March 18th, the ASEC analysis team discovered a document-borne APT attack targeting companies specialized in carbon emissions. According to logs collected from AhnLab’s ASD (AhnLab Smart Defense), the user of the infected PC appears to have downloaded a malicious word document titled “**** Carbon Credit Institution.doc” through a web
APT Attack Attempts Disguised as North Korea Related Paper Requirements (Kimsuky)
The ASEC analysis team has recently discovered the distribution of malicious Word (DOC) files to graduate school professors that are disguised as North Korea-related paper requirements. The name of the Word file is shown below. The term ‘KIMA’ mentioned in the filename is the name of the monthly magazine specializing
North Korea-related Hangul Word Processor (HWP) File Being Distributed
The ASEC analysis team has recently discovered that North Korea-related HWP file was being distributed. The operation method is not through a vulnerability, but instead, a hyperlink is inserted on the screen the user is exposed to upon running the file, prompting the user to click, and upon clicking, executables
APT Attack Cases of Kimsuky Group (PebbleDash)
The ASEC analysis team has been keeping an eye on the trend of malware that attempts APT attacks, sharing findings on the blog. In this confirmed case, PebbleDash backdoor was used in the attack, but logs of AppleSeed, Meterpreter, and other additional malware strains were also found. PebbleDash Backdoor The
