Hackers known as DEV-0322 are very interested in defense contractors and software developers. Microsoft said Tuesday that hackers operating in China are exploiting a zero-day vulnerability in one of its SolarWinds products. According to Microsoft, the hackers may have targeted US software and defense companies. p>
Read More Microsoft SolarWinds is detecting on day zero and under active attack the active process SolarWinds, based in Austin, Texas, has not provided any details about the threat behind the attacks or how they work.
Commercial VPNs and Consumer Routers at Risk
On Tuesday, Microsoft said it now identifies the hacking group as "DEV-0322." "DEV" refers to the "development team" that is being studied before Microsoft researchers can ascertain the origin or identity of the actor behind the operation. The attackers said they are physically located in China and often rely on botnets that consist of routers or other types of IoT devices. "MSTIC Watch DEV-0322 Target Entities in the US Defense Industry Base, Software Companies," Microsoft Threat Information Center researchers wrote in a post. "The group is based in China and has been observed penetrating attackers' infrastructure using commercial VPN solutions and consumer routers." Which people can be used to determine if they have been hacked. The adjustment indicators are:98 [.] 176 [.] 196 [.] 89 68 [.] 235 [.] 178 [.] 32208 [.] 113 [.] 35 [.] 58144 [.] 34 [.] 179 [.] 162 97 [.] 77 [.] 97 [.] 58 hxxp: // 144 [.] 34 [.] 179 [.] 162 / a C:\Windows\Temp\Serv-U .bat C:\Windows\Temp\test\current.dmp Suspicious exceptional errors, especially in the C:\Windows\System32\mshta.exe log file DebugSocketlog.txt http: // 144 [. ] 34 [.] 179 [.] 162 / a (defanged) cmd.exe /c whoami> “./Client/Common/redacted.txt” cmd.exe /c dir>”.\Client\Common\redacted.txt “cmd.exe /c” C:\Windows\Temp\Serv-U.bat “powerhell.exe C:\Windows\Temp\Serv-U.bat cmd.exe /typec\redacted\redacted.Archive>” C:\ProgramData\RhinoSoft\Serv-U\Users\Global Users\redacted.Archive" Tuesday
The ads posted also provided new technical details about the attack, specifically:
We noted that DEV-0322 It injects the cmd.exe command output into the files in the Serv-U \ Client \ Common \ folder, which is accessible by default from the Internet, so that attackers can retrieve the results of the commands. Also, by manually creating an archive file created in the Global User List, the actor also added itself as a Serv-U Administrator by adding a new global user to the Serv-U. Archive.
Because of how the DEV-0322 code is written, when it runs successfully T puts the Serv-U process at risk, an exception is made and the Serv-U log file, DebugSocketLog.txt is logged. This process can also get corrupted after executing a malicious command.
By looking at telemetry, we have identified the advantages of the exploit, but it is not a root weakness. MSTIC worked with Microsoft's Offensive Security Research Team, which investigated vulnerabilities in the Serv-U binary and identified the vulnerability through black box analysis. After the root cause was found, we reported the vulnerability to SolarWinds, which responded quickly to its discovery and correction. The zero-day vulnerability, referred to as CVE-2021-35211, is in the Serv-U SolarWinds product, which customers use to transfer files across the network. When Serv-U SSH is exposed to the Internet, these violations allow attackers to remotely execute malicious code with high points in the system. From there, attackers can install and execute malicious charges, or they can view and modify data. SolarWinds became a household name overnight in late December, when researchers discovered that the center was in a large-scale chain attack. After hacking the SolarWinds software development system, the attackers used their access to create a malicious update for nearly 18,000 customers using the company's Orion network management tool. Of those 18,000 clients, about 9 received tracking in US government agencies and about 100 in the private malware industry. The federal government blamed the attacks on Russia's foreign intelligence service, SVR. For more than a decade, SVR has been running malware campaigns targeting governments, political think tanks, and other organizations around the world.
The zero-day attacks discovered and reported by Microsoft have nothing to do with the supply chain. attack.
SolarWinds fixed this vulnerability over the weekend. Anyone running a vulnerable version of Serv-U should update immediately and check for signs of compromise. p>
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