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TEXTMATE is a second-stage PowerShell backdoor that is memory-resident. It was observed being used along with POWERSOURCE in February 2017. [1]

ID: S0146
Associated Software: DNSMessenger
Platforms: Windows
Version: 1.0

Associated Software Descriptions

Name Description
DNSMessenger Based on similar descriptions of functionality, it appears S0146, as named by FireEye, is the same as Stage 4 of a backdoor named DNSMessenger by Cisco's Talos Intelligence Group. However, FireEye appears to break DNSMessenger into two parts: S0145 and S0146. [2] [1]

Techniques Used

Domain ID Name Use
Enterprise T1059 Command-Line Interface TEXTMATE executes cmd.exe to provide a reverse shell to adversaries. [1] [2]
Enterprise T1071 Standard Application Layer Protocol TEXTMATE uses DNS TXT records for C2. [1]

Groups That Use This Software

ID Name References
G0046 FIN7 [1]