North Korean hackers exploit critical TeamCity flaw to breach networks

Microsoft says that the North Korean Lazarus and Andariel hacking groups are exploiting the CVE-2023-42793 flaw in TeamCity servers to deploy backdoor malware, likely to conduct software supply chain attacks. In September, TeamCity fixed a critical 9.8/10 vulnerability tracked as CVE-2023-42793 that allowed unauthenticated attackers to remotely execute code. While TeamCity quickly fixed the vulnerability, threat actors, such as ransomware gangs, began to exploit the flaw to breach corporate networks. In a new report, Microsoft's Threat intelligence team says that the Lazarus and Andariel hacking groups have been observed exploiting CVE-2023-42793 to breach TeamCity servers. While Microsoft has not said the ultimate goal of these attacks, they believe it could be to conduct software supply chain attacks. "In past operations, Diamond Sleet and other North Korean threat actors have successfully carried out software supply chain attacks by infiltrating build environments," explains Microsoft. Once the threat actors breach a TeamCity server, they utilize different attack chains to deploy backdoors and gain persistence on the compromised network. Lazarus was seen deploying the ForestTiger malware in one attack chain, which is used as a backdoor for executing commands on the breached server. A second attack chain uses DLL search order hijacking attacks to launch a malware loader called FeedLoad, which installs a remote access Trojan. Ariel uses a more hands-on approach in their attacks, creating a 'krtbgt' admin account on the breached server and running commands to gather system information. Regardless of how the attacks are conducted, Microsoft says that the hackers ultimately dump credentials from LSASS, likely used to spread laterally on the compromised network. Microsoft has shared more technical details for all three of the observed attack chains, including indicators of compromise. Both Lazarus and Andariel are state-sponsored North Korean hacking groups, with Andariel a subgroup of Lazarus. While the groups' attacks are used to benefit the North Korean government, their goals can be different. Lazarus has been linked to various espionage, data theft, and financial gain attacks, including targeting security researchers, trojanizing open-source crypto platforms, performing massive cryptocurrency heists, and conducting fake job interviews to distribute malware. On the other hand, Andariel targets defense and IT services entities in South Korea, the United States, and India to conduct cyber espionage, data theft, destructive attacks, and ransomware attacks. Ransomware gangs now exploiting critical TeamCity RCE flaw. Lazarus hackers breach aerospace firm with new LightlessCan malware. Lazarus hackers deploy fake VMware PyPI packages in VMConnect attacks. Hackers use public ManageEngine exploit to breach internet org.

This Cyber News was published on www.bleepingcomputer.com. Publication date: Thu, 30 Nov 2023 23:19:27 +0000


Cyber News related to North Korean hackers exploit critical TeamCity flaw to breach networks

North Korea's state hackers stole $3 billion in crypto since 2017 - North Korean-backed state hackers have stolen an estimated $3 billion in a long string of hacks targeting the cryptocurrency industry over the last six years since January 2017. Kimsuky, Lazarus Group, Andariel, and other North Korean hacking groups ...
1 year ago Bleepingcomputer.com
North Korean hackers exploit critical TeamCity flaw to breach networks - Microsoft says that the North Korean Lazarus and Andariel hacking groups are exploiting the CVE-2023-42793 flaw in TeamCity servers to deploy backdoor malware, likely to conduct software supply chain attacks. In September, TeamCity fixed a critical ...
1 year ago Bleepingcomputer.com
Moonstone Sleet emerges as new North Korean threat actor with new bag of tricks - Microsoft has identified a new North Korean threat actor, now tracked as Moonstone Sleet, that uses both a combination of many tried-and-true techniques used by other North Korean threat actors and unique attack methodologies to target companies for ...
6 months ago Microsoft.com
North Korean Hackers Utilizing Credential Stuffing to Launch Cyberattacks - In an alarming new report, researchers found that North Korean-linked hackers have been using stolen passwords during cyberattacks to gain access to various government, military and financial networks. According to security experts, the creative ...
1 year ago Thehackernews.com
North Korean Hackers Use Fake Job Offers & Salary Bumps as Lure for Crypto Theft - Recent investigations have uncovered a massive operation carried out by North Korean hackers looking to steal cryptocurrency through fake job offers and salary bumps. According to recent reports, hackers have been able to trace the malicious ...
1 year ago Therecord.media
TeamCity Intrusion Saga: APT29 Suspected Among the Attackers Exploiting CVE-2023-42793 - As part of this analysis, we look at threat actor TTPs employed throughout the intrusion and how they were identified and pieced together by the FortiGuard IR team. The following section of this report focuses on the activities of one of these threat ...
11 months ago Feeds.fortinet.com
US govt sanctions North Korea's Kimsuky hacking group - The Treasury Department's Office of Foreign Assets Control has sanctioned the North Korean-backed Kimsuky hacking group for stealing intelligence in support of the country's strategic goals. OFAC has also sanctioned eight North Korean agents for ...
1 year ago Bleepingcomputer.com
Woman Accused of Helping North Korean IT Workers Infiltrate Hundreds of US Firms - The US government has announced charges, seizures, arrests and rewards as part of an effort to disrupt a scheme in which North Korean IT workers infiltrated hundreds of companies and earned millions of dollars for North Korea. According to the ...
6 months ago Securityweek.com
CISA: Russian hackers target TeamCity servers since September - CISA and partner cybersecurity agencies and intelligence services warned that the APT29 hacking group linked to Russia's Foreign Intelligence Service has been targeting unpatched TeamCity servers in widespread attacks since September 2023. APT29 is ...
11 months ago Bleepingcomputer.com
FBI Charges North Korean Hackers Over $100 Million Stolen in Crypto Hack - The FBI has recently charged a North Korean hacker in connection with the Harmony crypto hack from which the hacker allegedly stole over $100 million. The hacker, Jon Chang Hyok, is a member of the North Korean military intelligence agency, the ...
1 year ago Bleepingcomputer.com
North Korean Hackers Stole $600m in Crypto in 2023 - North Korean hackers stole at least $600m in cryptocurrency in 2023, around a third of the total value of such heists, according to blockchain intelligence firm TRM. Despite the eye-watering sum, this figure represents a 30% reduction on ...
10 months ago Infosecurity-magazine.com
macOS Malware Mix & Match: North Korean APTs Stir Up Fresh Attacks - North Korean advanced persistent threat groups are mixing and matching components of two recently unleashed types of Mac-targeted malware to evade detection and fly under the radar as they continue their efforts to conduct operations at the behest of ...
1 year ago Darkreading.com
Microsoft: BlueNoroff hackers plan new crypto-theft attacks - Microsoft warns that the BlueNoroff North Korean hacking group is setting up new attack infrastructure for upcoming social engineering campaigns on LinkedIn. This financially motivated threat group also has a documented history of cryptocurrency ...
1 year ago Bleepingcomputer.com
Microsoft links North Korean hackers to new FakePenny ransomware - Microsoft has linked a North Korean hacking group it tracks as Moonstone Sleet to FakePenny ransomware attacks, which have led to millions of dollars in ransom demands. While this threat group's tactics, techniques, and procedures largely overlapped ...
6 months ago Bleepingcomputer.com
Experts from the United Nations Report North Korean Hackers Have Taken a Large Amount of Digital Assets - Last year, North Korean hackers working for the government stole a record-breaking amount of virtual assets estimated to be worth between $630 million and more than $1 billion, according to a new report from U.N. experts. The panel of experts said ...
1 year ago Securityweek.com
Microsoft: Lazarus hackers breach CyberLink in supply chain attack - Microsoft says a North Korean hacking group has breached Taiwanese multimedia software company CyberLink and trojanized one of its installers to push malware in a supply chain attack targeting potential victims worldwide. According to Microsoft ...
1 year ago Bleepingcomputer.com
Echoes of SolarWinds: JetBrains TeamCity servers under attack by Russia-backed hackers - The SolarWinds hackers are infiltrating JetBrains TeamCity servers via a critical vulnerability enabling authorization bypass and arbitrary code execution, government officials warn. Russian Foreign Intelligence Service-backed threat actor CozyBear ...
11 months ago Packetstormsecurity.com
JetBrains warns of new TeamCity auth bypass vulnerability - JetBrains urged customers today to patch their TeamCity On-Premises servers against a critical authentication bypass vulnerability that can let attackers take over vulnerable instances with admin privileges. Tracked as CVE-2024-23917, this critical ...
9 months ago Bleepingcomputer.com
The past year was the most detrimental for digital currency security breaches, with North Korean organizations profiting. - In 2022, cyberattacks on cryptocurrency platforms resulted in the theft of almost $4 billion, with a large portion of the activity being attributed to hackers working on behalf of the North Korean government. According to blockchain research firm ...
1 year ago Therecord.media
US seizes Sinbad crypto mixer used by North Korean Lazarus hackers - The U.S. Department of the Treasury has sanctioned the Sinbad cryptocurrency mixing service for its use as a money-laundering tool by the North Korean Lazarus hacking group. A cryptocurrency mixer is a server that allows people to deposit crypto, ...
1 year ago Bleepingcomputer.com
TeamCity Software Vulnerability Exploited Globally - Over the past few days a security breach has transpired, hackers are taking advantage of a significant flaw in TeamCity On-Premises software, allowing them to create unauthorised admin accounts. This flaw, known as CVE-2024-27198, has prompted urgent ...
8 months ago Cysecurity.news
North Korean Hackers Attacked Indian Medical and Energy Companies - The North Korean military's notorious hacking arm, known as the Lazarus Group, has been accused of targeting public and private sector research organizations, an Indian medical research company, and other businesses in the energy sector. Security ...
1 year ago Therecord.media
North Korean Hackers Behind Major Cyberattacks, Confirmed by FBI - The FBI released a statement confirming that North Korea was behind a series of major cyberattacks in the past year. It is the first time that the FBI has attributed such activity to North Korea. The attacks included intrusions into networks, ...
1 year ago Thehackernews.com
North Korean Hackers Have Stolen Over $3 Billion in Cryptocurrency: Report - North Korean threat actors are believed to have stolen more than $3 billion in cryptocurrency to date, according to a report from threat intelligence firm Recorded Future. Collectively tracked as the Lazarus Group, the North Korean hackers specialize ...
1 year ago Securityweek.com
North Korean hackers linked to defense sector supply-chain attack - In an advisory today Germany's federal intelligence agency and South Korea's National Intelligence Service warn of an ongoing cyber-espionage operation targeting the global defense sector on behalf of the North Korean government. The attacks aim to ...
9 months ago Bleepingcomputer.com

Latest Cyber News


Cyber Trends (last 7 days)


Trending Cyber News (last 7 days)