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RegDuke

RegDuke is a first stage implant written in .NET and used by APT29 since at least 2017. RegDuke has been used to control a compromised machine when control of other implants on the machine was lost.[1]

ID: S0511
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Type: MALWARE
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Platforms: Windows
Version: 1.0
Created: 23 September 2020
Last Modified: 09 October 2020
Enterprise Layer
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Techniques Used

Domain ID Name Use
Enterprise T1059 .001 Command and Scripting Interpreter: PowerShell

RegDuke can extract and execute PowerShell scripts from C2 communications.[1]
Enterprise T1140 Deobfuscate/Decode Files or Information

RegDuke can decrypt strings with a key either stored in the Registry or hardcoded in the code.[1]
Enterprise T1546 .003 Event Triggered Execution: Windows Management Instrumentation Event Subscription

RegDuke can persist using a WMI consumer that is launched every time a process named WINWORD.EXE is started.[1]
Enterprise T1105 Ingress Tool Transfer

RegDuke can download files from C2.[1]
Enterprise T1112 Modify Registry

RegDuke can store its encryption key in the Registry.[1]
Enterprise T1027 Obfuscated Files or Information

RegDuke can use control-flow flattening or the commercially available .NET Reactor for obfuscation.[1]
.003 Steganography

RegDuke can hide data in images, including use of the Least Significant Bit (LSB).[1]
Enterprise T1102 .002 Web Service: Bidirectional Communication

RegDuke can use Dropbox as its C2 server.[1]

Groups That Use This Software

ID Name References
G0016 APT29

[1][2]

References

  1. Faou, M., Tartare, M., Dupuy, T. (2019, October). OPERATION GHOST. Retrieved September 23, 2020.
  1. Secureworks CTU. (n.d.). IRON HEMLOCK. Retrieved February 22, 2022.