![]() Ke3chang has dumped credentials, including by using gsecdump. OS Credential Dumping: Security Account Manager Ke3chang has dumped credentials, including by using Mimikatz. Ke3chang has obtained and used tools such as Mimikatz. Ke3chang has used Base64-encoded shellcode strings. Ke3chang has dropped their malware into legitimate installed software paths including: C:\ProgramFiles\Realtek\Audio\HDA\AERTSr.exe, C:\Program Files (x86)\Foxit Software\Foxit Reader\FoxitRdr64.exe, C:\Program Files (x86)\Adobe\Flash Player\AddIns\airappinstaller\airappinstall.exe, and C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd64.exe. Masquerading: Match Legitimate Name or Location Ke3chang has used the right-to-left override character in spearphishing attachment names to trick targets into executing. Ke3chang has used tools to download files to compromised machines. Ke3chang uses command-line interaction to search files and directories. Ke3chang has gained access through VPNs including with compromised accounts and stolen VPN certificates. Ke3chang has compromised networks by exploiting Internet-facing applications, including vulnerable Microsoft Exchange and SharePoint servers. Ke3chang transferred compressed and encrypted RAR files containing exfiltration through the established backdoor command and control channel during operations. NET tool to dump data from Microsoft Exchange mailboxes. Ke3chang has used compromised credentials and a. Įmail Collection: Remote Email Collection Ke3chang has developed custom malware that allowed them to maintain persistence on victim networks. Ke3chang has deobfuscated Base64-encoded shellcode strings prior to loading them. Ke3chang gathered information and files from local directories for exfiltration. ![]() Ke3chang used a SharePoint enumeration and data dumping tool known as spwebmember. ![]() ĭata from Information Repositories: Sharepoint Ke3chang backdoor RoyalDNS established persistence through adding a service called Nwsapagent. Ĭreate or Modify System Process: Windows Service Ke3chang has used batch scripts in its malware to install persistence mechanisms. Malware used by Ke3chang can run commands on the command-line interface. Several Ke3chang backdoors achieved persistence by adding a Run key. īoot or Logon Autostart Execution: Registry Run Keys / Startup Folder Ke3chang has performed frequent and scheduled data exfiltration from compromised networks. Ke3chang has performed frequent and scheduled data collection from victim networks. Ke3chang is known to use 7Zip and RAR with passwords to encrypt data prior to exfiltration. The Ke3chang group has been known to compress data before exfiltration. Ke3chang malware RoyalDNS has used DNS for C2. Ke3chang malware including RoyalCli and BS2005 have communicated over HTTP with the C2 server through Internet Explorer (IE) by using the COM interface IWebBrowser2. Īpplication Layer Protocol: Web Protocols Ke3chang performs account discovery using commands such as net localgroup administrators and net group "REDACTED" /domain on specific permissions groups. Enterprise Layer download view Techniques Used Domain
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