Adversaries may exfiltrate data, such as sensitive documents, through the use of automated processing after being gathered during Collection.
When automated exfiltration is used, other exfiltration techniques likely apply as well to transfer the information out of the network, such as Exfiltration Over C2 Channel and Exfiltration Over Alternative Protocol.
Rover automatically searches for files on local drives based on a predefined list of file extensions and sends them to the command and control server every 60 minutes. Rover also automatically sends keylogger files and screenshots to the C2 server on a regular timeframe.
This type of attack technique cannot be easily mitigated with preventive controls since it is based on the abuse of system features.
Monitor process file access patterns and network behavior. Unrecognized processes or scripts that appear to be traversing file systems and sending network traffic may be suspicious.
- F-Secure Labs. (2014, July). COSMICDUKE Cosmu with a twist of MiniDuke. Retrieved July 3, 2014.
- Settle, A., et al. (2016, August 8). MONSOON - Analysis Of An APT Campaign. Retrieved September 22, 2016.
- Ray, V., Hayashi, K. (2016, February 29). New Malware ‘Rover’ Targets Indian Ambassador to Afghanistan. Retrieved February 29, 2016.
- Calvet, J. (2014, November 11). Sednit Espionage Group Attacking Air-Gapped Networks. Retrieved January 4, 2017.
- Faou, M. (2019, May). Turla LightNeuron: One email away from remote code execution. Retrieved June 24, 2019.
- ESET. (2019, July). MACHETE JUST GOT SHARPER Venezuelan government institutions under attack. Retrieved September 13, 2019.
- Sherstobitoff, R. (2018, March 02). McAfee Uncovers Operation Honeybee, a Malicious Document Campaign Targeting Humanitarian Aid Groups. Retrieved May 16, 2018.