QiAnXin Threat Intelligence Center and Falcon Operations Team observed in their daily operations that in June 2024, several foreign counterparts reported in-the-wild attacks related to the new attack technique GrimResource.
QiAnXin Threat Intelligence Center and Falcon Operations Team promptly conducted research on this technique and have been continuously monitoring it. In mid-July 2024, they discovered the first attack incident in government and enterprise terminals, and the researchers classified the nature of the attack as black industry. The GrimResource technique exploits the XSS vulnerability in mmc system files to execute JS code and uses DotNetToJScript to load arbitrary .NET programs into memory. This not only bypasses ActiveX control warnings but also enables fileless payload execution.
Read more…
Source: QiAnXin Threat Intelligence Center/Falcon Operations Team
Related:
- Volt Typhoon Actors Exploiting Insecure SOHO Routers
January 31, 2024
Threat actors—particularly the People’s Republic of China (PRC)—sponsored Volt Typhoon group—are compromising small office/home office (SOHO) routers by exploiting software defects that manufacturers must eliminate through secure software design and development. Specifically, Volt Typhoon actors are exploiting security defects in SOHO routers to use them as launching pads to further compromise U.S. critical infrastructure entities. CISA ...
- Blackwood APT Group Has a New DLL Loader
January 29, 2024
This week, the SonicWall Capture Labs threat research team analyzed a sample tied to the Blackwood APT group. This is a DLL that, when loaded onto a victim’s computer, will escalate privileges and attempt to install a backdoor for communications monitoring and diversion. It has evasive capabilities and, as of this writing, is targeting companies and ...
- Malicious ads for restricted messaging applications target Chinese users
January 25, 2024
An ongoing campaign of malicious ads has been targeting Chinese-speaking users with lures for popular messaging applications such as Telegram or LINE with the intent of dropping malware. Interestingly, software like Telegram is heavily restricted and was previously banned in China. Many Google services, including Google search, are also either restricted or heavily censored in mainland ...
- Seoul’s spy agency accuses China of major cyber attacks
January 24, 2024
South Korean spy agency on Wednesday reported a significant uptick in attempts of cyber attacks by foreign sources last year, waged mainly by North Korea and China. Chinese attacks tended to inflict more severe damage than North Korean ones, despite the latter being more frequent. The National Intelligence Service said cyber attacks against the public sector ...
- Chinese Espionage Group UNC3886 Found Exploiting CVE-2023-34048 Since Late 2021
January 19, 2024
While publicly reported and patched in October 2023, Mandiant and VMware Product Security have found UNC3886, a highly advanced China-nexus espionage group, has been exploiting CVE-2023-34048 as far back as late 2021. These findings stem from Mandiant’s continued research of the novel attack paths used by UNC3886, which historically focuses on technologies that are unable to ...
- Chinese drones may pose security risks, US agencies warn
January 18, 2024
Chinese-made drones could pose a national security risk to the United States due to laws in China that force companies to provide authorities access to user data, two U.S. agencies say in a new memo. These “unmanned aircraft systems,” or UAS, are often used by operators of critical infrastructure in the United States without regard to ...