BackConfig
BackConfig is a custom Trojan with a flexible plugin architecture that has been used byPatchwork.[1]
Techniques Used
| Domain | ID | Name | Use | |
|---|---|---|---|---|
| Enterprise | T1071 | .001 | Application Layer Protocol:Web Protocols | BackConfig has the ability to use HTTPS for C2 communiations.[1] |
| Enterprise | T1059 | .003 | Command and Scripting Interpreter:Windows Command Shell | BackConfig can download and run batch files to execute commands on a compromised host.[1] |
| .005 | Command and Scripting Interpreter:Visual Basic | BackConfig has used VBS to install its downloader component and malicious documents with VBA macro code.[1] | ||
| Enterprise | T1140 | Deobfuscate/Decode Files or Information | BackConfig has used a custom routine to decrypt strings.[1] | |
| Enterprise | T1083 | File and Directory Discovery | BackConfig has the ability to identify folders and files related to previous infections.[1] | |
| Enterprise | T1564 | .001 | Hide Artifacts:Hidden Files and Directories | BackConfig has the ability to set folders or files to be hidden from the Windows Explorer default view.[1] |
| Enterprise | T1070 | .004 | Indicator Removal:File Deletion | BackConfig has the ability to remove files and folders related to previous infections.[1] |
| Enterprise | T1105 | Ingress Tool Transfer | BackConfig can download and execute additional payloads on a compromised host.[1] | |
| Enterprise | T1036 | .005 | Masquerading:Match Legitimate Resource Name or Location | BackConfig has hidden malicious payloads in |
| Enterprise | T1106 | Native API | BackConfig can leverage API functions such as | |
| Enterprise | T1027 | .010 | Obfuscated Files or Information:Command Obfuscation | BackConfig has used compressed and decimal encoded VBS scripts.[1] |
| Enterprise | T1137 | .001 | Office Application Startup:Office Template Macros | BackConfig has the ability to use hidden columns in Excel spreadsheets to store executable files or commands for VBA macros.[1] |
| Enterprise | T1053 | .005 | Scheduled Task/Job:Scheduled Task | BackConfig has the ability to use scheduled tasks to repeatedly execute malicious payloads on a compromised host.[1] |
| Enterprise | T1553 | .002 | Subvert Trust Controls:Code Signing | BackConfig has been signed with self signed digital certificates mimicking a legitimate software company.[1] |
| Enterprise | T1082 | System Information Discovery | BackConfig has the ability to gather the victim's computer name.[1] | |
| Enterprise | T1204 | .001 | User Execution:Malicious Link | BackConfig has compromised victims via links to URLs hosting malicious content.[1] |