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Category — Chinese Hackers
Czech Republic Blames China-Linked APT31 Hackers for 2022 Cyberattack

Czech Republic Blames China-Linked APT31 Hackers for 2022 Cyberattack

May 28, 2025 Cybersecurity / Cyber Espionage
The Czech Republic on Wednesday formally accused a threat actor associated with the People's Republic of China (PRC) of targeting its Ministry of Foreign Affairs. In a public statement, the government said it identified China as the culprit behind a malicious campaign targeting one of the unclassified networks of the Czech Ministry of Foreign Affairs. The extent of the breach is presently not known. "The malicious activity [...] lasted from 2022 and affected an institution designated as Czech critical infrastructure," it added . The attack has been attributed to a state-sponsored threat actor tracked as APT31 , which also overlaps with threat clusters known as Altaire, Bronze Vinewood, Judgement Panda, PerplexedGoblin, RedBravo, Red Keres, and Violet Typhoon (formerly Zirconium). The hacking group, publicly associated with the Ministry of State Security (MSS) and the Hubei State Security Department, is assessed to be active since at least 2010, per the U.S. Departme...
Employees Searching Payroll Portals on Google Tricked Into Sending Paychecks to Hackers

Employees Searching Payroll Portals on Google Tricked Into Sending Paychecks to Hackers

May 27, 2025 Malware / Mobile Security
Threat hunters have exposed a novel campaign that makes use of search engine optimization (SEO) poisoning techniques to target employee mobile devices and facilitate payroll fraud. The activity, first detected by ReliaQuest in May 2025 targeting an unnamed customer in the manufacturing sector, is characterized by the use of fake login pages to access the employee payroll portal and redirect paychecks into accounts under the threat actor's control. "The attacker's infrastructure used compromised home office routers and mobile networks to mask their traffic, dodging detection and slipping past traditional security measures," the cybersecurity company said in an analysis published last week. "The adversary specifically targeted employee mobile devices with a fake website impersonating the organization's login page. Armed with stolen credentials, the adversary gained access to the organization's payroll portal, changed direct deposit information, and re...
Chinese Hackers Exploit Trimble Cityworks Flaw to Infiltrate U.S. Government Networks

Chinese Hackers Exploit Trimble Cityworks Flaw to Infiltrate U.S. Government Networks

May 22, 2025 Vulnerability / Threat Intelligence
A Chinese-speaking threat actor tracked as UAT-6382 has been linked to the exploitation of a now-patched remote-code-execution vulnerability in Trimble Cityworks to deliver Cobalt Strike and VShell. "UAT-6382 successfully exploited CVE-2025-0944, conducted reconnaissance, and rapidly deployed a variety of web shells and custom-made malware to maintain long-term access," Cisco Talos researchers Asheer Malhotra and Brandon White said in an analysis published today. "Upon gaining access, UAT-6382 expressed a clear interest in pivoting to systems related to utility management." The network security company said it observed the attacks targeting enterprise networks of local governing bodies in the United States starting January 2025. CVE-2025-0944 (CVSS score: 8.6) refers to the deserialization of untrusted data vulnerability affecting the GIS-centric asset management software that could enable remote code execution. The vulnerability, since patched, was added to ...
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Navigating the Maze: How to Choose the Best Threat Detection Solution

websiteSygniaThreat Detection / Cybersecurity
Discover how to continuously protect your critical assets with the right MDR strategy. Download the Guide.
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Phishing Response Automation Playbook: Reduce Security Analysts' Time on Phishing Alerts

websiteUnderdefensePhishing Protection / Incident Response
Automate your phishing detection and response: from identifying phishing emails to conducting impact analysis and remediation. This playbook includes a phishing response checklist and a step-by-step guide for handling detected phishing emails.
Chinese Hackers Exploit Ivanti EPMM Bugs in Global Enterprise Network Attacks

Chinese Hackers Exploit Ivanti EPMM Bugs in Global Enterprise Network Attacks

May 22, 2025 Enterprise Security / Malware
A recently patched pair of security flaws affecting Ivanti Endpoint Manager Mobile (EPMM) software has been exploited by a China-nexus threat actor to target a wide range of sectors across Europe, North America, and the Asia-Pacific region. The vulnerabilities, tracked as CVE-2025-4427 (CVSS score: 5.3) and CVE-2025-4428 (CVSS score: 7.2), could be chained to execute arbitrary code on a vulnerable device without requiring any authentication. They were addressed by Ivanti last week. Now, according to a report from EclecticIQ, the vulnerability chain has been abused by UNC5221 , a Chinese cyber espionage group known for its targeting of edge network appliances since at least 2023. Most recently, the hacking crew was also attributed to exploitation efforts targeting SAP NetWeaver instances susceptible to CVE-2025-31324. The Dutch cybersecurity company said the earliest exploitation activity dates back to May 15, 2025, with the attacks targeting healthcare, telecommunications, avia...
Chinese Hackers Deploy MarsSnake Backdoor in Multi-Year Attack on Saudi Organization

Chinese Hackers Deploy MarsSnake Backdoor in Multi-Year Attack on Saudi Organization

May 20, 2025 Malware / Cyber Espionage
Threat hunters have exposed the tactics of a China-aligned threat actor called UnsolicitedBooker that targeted an unnamed international organization in Saudi Arabia with a previously undocumented backdoor dubbed MarsSnake. ESET, which first discovered the hacking group's intrusions targeting the entity in March 2023 and again a year later, said the activity leverages spear-phishing emails using flight tickets as lures to infiltrate targets of interest. "UnsolicitedBooker sends spear-phishing emails, generally with a flight ticket as the decoy, and its targets include governmental organizations in Asia, Africa, and the Middle East," the company said in its latest APT Activity Report for the period ranging from October 2024 to March 2025. Attacks mounted by the threat actor are characterized by the use of backdoors like Chinoxy, DeedRAT, Poison Ivy, and BeRAT, which are widely used by Chinese hacking crews. UnsolicitedBooker is assessed to share overlaps with a clu...
BianLian and RansomExx Exploit SAP NetWeaver Flaw to Deploy PipeMagic Trojan

BianLian and RansomExx Exploit SAP NetWeaver Flaw to Deploy PipeMagic Trojan

May 14, 2025 Ransomware / Vulnerability
At least two different cybercrime groups BianLian and RansomExx are said to have exploited a recently disclosed security flaw in SAP NetWeaver tracked as CVE-2025-31324 , indicating that multiple threat actors are taking advantage of the bug. Cybersecurity firm ReliaQuest, in a new update published today, said it uncovered evidence suggesting involvement from the BianLian data extortion crew and the RansomExx ransomware family, which is traced by Microsoft under the moniker Storm-2460. BianLian is assessed to be involved in at least one incident based on infrastructure links to IP addresses previously identified as attributed to the e-crime group. "We identified a server at 184[.]174[.]96[.]74 hosting reverse proxy services initiated by the rs64.exe executable," the company said. "This server is related to another IP, 184[.]174[.]96[.]70, operated by the same hosting provider. The second IP had previously been flagged as a command-and-control (C2) server associat...
China-Linked APTs Exploit SAP CVE-2025-31324 to Breach 581 Critical Systems Worldwide

China-Linked APTs Exploit SAP CVE-2025-31324 to Breach 581 Critical Systems Worldwide

May 13, 2025 Vulnerability / Threat Intelligence
A recently disclosed critical security flaw impacting SAP NetWeaver is being exploited by multiple China-nexus nation-state actors to target critical infrastructure networks. "Actors leveraged CVE-2025-31324 , an unauthenticated file upload vulnerability that enables remote code execution (RCE)," EclecticIQ researcher Arda Büyükkaya said in an analysis published today. Targets of the campaign include natural gas distribution networks, water and integrated waste management utilities in the United Kingdom, medical device manufacturing plants oil and gas exploration and production companies in the United States, and government ministries in Saudi Arabia that are responsible for investment strategy and financial regulation. The findings are based on a publicly exposed directory uncovered on attacker-controlled infrastructure ("15.204.56[.]106") that contained event logs capturing the activities across multiple compromised systems. The Dutch cybersecurity company h...
Chinese Hackers Exploit SAP RCE Flaw CVE-2025-31324, Deploy Golang-Based SuperShell

Chinese Hackers Exploit SAP RCE Flaw CVE-2025-31324, Deploy Golang-Based SuperShell

May 09, 2025 Vulnerability / Industrial Security
A China-linked unnamed threat actor dubbed Chaya_004 has been observed exploiting a recently disclosed security flaw in SAP NetWeaver. Forescout Vedere Labs, in a report published Thursday, said it uncovered a malicious infrastructure likely associated with the hacking group weaponizing CVE-2025-31324 (CVSS score: 10.0) since April 29, 2025. CVE-2025-31324 refers to a critical SAP NetWeaver flaw that allows attackers to achieve remote code execution (RCE) by uploading web shells through a susceptible "/developmentserver/metadatauploader" endpoint. The vulnerability was first flagged by ReliaQuest late last month when it found the shortcoming being abused in real-world attacks by unknown threat actors to drop web shells and the Brute Ratel C4 post-exploitation framework. According to Onapsis, hundreds of SAP systems globally have fallen victim to attacks spanning industries and geographies, including energy and utilities, manufacturing, media and entertainment, oil an...
MirrorFace Targets Japan and Taiwan with ROAMINGMOUSE and Upgraded ANEL Malware

MirrorFace Targets Japan and Taiwan with ROAMINGMOUSE and Upgraded ANEL Malware

May 08, 2025 Malware / Cyber Espionage
The nation-state threat actor known as MirrorFace has been observed deploying malware dubbed ROAMINGMOUSE as part of a cyber espionage campaign directed against government agencies and public institutions in Japan and Taiwan. The activity, detected by Trend Micro in March 2025, involved the use of spear-phishing lures to deliver an updated version of a backdoor called ANEL. "The ANEL file from the 2025 campaign discussed in this blog implemented a new command to support an execution of BOF (Beacon Object File) in memory," security researcher Hara Hiroaki said . "This campaign also potentially leveraged SharpHide to launch the second stage backdoor NOOPDOOR." The China-aligned threat actor, also known as Earth Kasha, is assessed to be a sub-cluster within APT10. In March 2025, ESET shed light on a campaign referred to as Operation AkaiRyū that targeted a diplomatic organization in the European Union in August 2024 with ANEL (aka UPPERCUT). The targeting of v...
Multi-Stage Malware Attack Uses .JSE and PowerShell to Deploy Agent Tesla and XLoader

Multi-Stage Malware Attack Uses .JSE and PowerShell to Deploy Agent Tesla and XLoader

Apr 18, 2025 Malware / Email Security
A new multi-stage attack has been observed delivering malware families like Agent Tesla variants, Remcos RAT, and XLoader. "Attackers increasingly rely on such complex delivery mechanisms to evade detection, bypass traditional sandboxes, and ensure successful payload delivery and execution," Palo Alto Networks Unit 42 researcher Saqib Khanzada said in a technical write-up of the campaign. The starting point of the attack is a deceptive email that poses as an order request to deliver a malicious 7-zip archive attachment, which contains a JavaScript encoded (.JSE) file. The phishing email, observed in December 2024, falsely claimed that a payment had been made and urged the recipient to review an attached order file. Launching the JavaScript payload triggers the infection sequence, with the file acting as a downloader for a PowerShell script from an external server. The script, in turn, houses a Base64-encoded payload that's subsequently deciphered, written to the Wi...
Mustang Panda Targets Myanmar With StarProxy, EDR Bypass, and TONESHELL Updates

Mustang Panda Targets Myanmar With StarProxy, EDR Bypass, and TONESHELL Updates

Apr 17, 2025 Malware / Network Security
The China-linked threat actor known as Mustang Panda has been attributed to a cyber attack targeting an unspecified organization in Myanmar with previously unreported tooling, highlighting continued effort by the threat actors to increase the sophistication and effectiveness of their malware. This includes updated versions of a known backdoor called TONESHELL , as well as a new lateral movement tool dubbed StarProxy, two keyloggers codenamed PAKLOG, CorKLOG, and an Endpoint Detection and Response (EDR) evasion driver referred to as SplatCloak . "TONESHELL, a backdoor used by Mustang Panda, has been updated with changes to its FakeTLS command-and-control (C2) communication protocol as well as to the methods for creating and storing client identifiers," Zscaler ThreatLabz researcher Sudeep Singh said in a two-part analysis . Mustang Panda, also known as BASIN, Bronze President, Camaro Dragon, Earth Preta, HoneyMyte, and RedDelta, is a China-aligned state-sponsored threat ...
Chinese Hackers Target Linux Systems Using SNOWLIGHT Malware and VShell Tool

Chinese Hackers Target Linux Systems Using SNOWLIGHT Malware and VShell Tool

Apr 15, 2025 Linux / Malware
The China-linked threat actor known as UNC5174 has been attributed to a new campaign that leverages a variant of a known malware dubbed SNOWLIGHT and a new open-source tool called VShell to infect Linux systems. "Threat actors are increasingly using open source tools in their arsenals for cost-effectiveness and obfuscation to save money and, in this case, plausibly blend in with the pool of non-state-sponsored and often less technical adversaries (e.g., script kiddies), thereby making attribution even more difficult," Sysdig researcher Alessandra Rizzo said in a report shared with The Hacker News. "This seems to hold especially true for this particular threat actor , who has been under the radar for the last year since being affiliated with the Chinese government." UNC5174, also referred to as Uteus (or Uetus), was previously documented by Google-owned Mandiant as exploiting security flaws in Connectwise ScreenConnect and F5 BIG-IP software to deliver a C-base...
Critical Ivanti Flaw Actively Exploited to Deploy TRAILBLAZE and BRUSHFIRE Malware

Critical Ivanti Flaw Actively Exploited to Deploy TRAILBLAZE and BRUSHFIRE Malware

Apr 04, 2025 Malware / Vulnerability
Ivanti has disclosed details of a now-patched critical security vulnerability impacting its Connect Secure product that has come under active exploitation in the wild. The vulnerability, tracked as CVE-2025-22457 (CVSS score: 9.0), concerns a case of a stack-based buffer overflow that could be exploited to execute arbitrary code on affected systems. "A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6, Ivanti Policy Secure before version 22.7R1.4, and Ivanti ZTA Gateways before version 22.8R2.2 allows a remote unauthenticated attacker to achieve remote code execution," Ivanti said in an alert released Thursday. The flaw impacts the following products and versions - Ivanti Connect Secure (versions 22.7R2.5 and prior) - Fixed in version 22.7R2.6 (Patch released on February 11, 2025) Pulse Connect Secure (versions 9.1R18.9 and prior) - Fixed in version 22.7R2.6 (Contact Ivanti to migrate as the device has reached end-of-support as of December ...
New SparrowDoor Backdoor Variants Found in Attacks on U.S. and Mexican Organizations

New SparrowDoor Backdoor Variants Found in Attacks on U.S. and Mexican Organizations

Mar 26, 2025 Malware / Vulnerability
The Chinese threat actor known as FamousSparrow has been linked to a cyber attack targeting a trade group in the United States and a research institute in Mexico to deliver its flagship backdoor SparrowDoor and ShadowPad. The activity, observed in July 2024, marks the first time the hacking crew has deployed ShadowPad , a malware widely shared by Chinese state-sponsored actors. "FamousSparrow deployed two previously undocumented versions of the SparrowDoor backdoor, one of them modular," ESET said in a report shared with The Hacker News. "Both versions constitute considerable progress over previous ones and implement parallelization of commands." FamousSparrow was first documented by the Slovak cybersecurity company in September 2021 in connection with a series of cyber attacks aimed at hotels, governments, engineering companies, and law firms with SparrowDoor, an implant exclusively used by the group. Since then, there have been reports of the adversarial...
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