MSIL/FilecoderMc.8A80!tr.ransom
Analysis
MSIL/FilecoderMc.8A80!tr.ransom is a detection for a McRansomware trojan.
Below are some of its observed characteristics/behaviours:
- This malware may drop any of the following file(s):
- GetBack_MC_RANSOM_FILEs.HTML: This html file will serve as ransom notes.
- {Original name+Ext}.mc_ransom_config: It may drop the configuration files for any encrypted file, which includes encryption key using RSA 2048 algorithm.
- %Desktop%\ simple_key.mmm: This file includes RSA Key Value.
- This malware was also observed to affect/encrypt files located on shared drive within the same subnet.
- Affected files of this Ransomware will use the prepending filenaming format as {Original name+Ext}.mc_ransom.
- Below is an illustration of the malware's Ransom notes:
- Figure 1: Ransom notes.
Recommended Action
- Make sure that your FortiGate/FortiClient system is using the latest AV database.
- Quarantine/delete files that are detected and replace infected files with clean backup copies.
Telemetry
Detection Availability
FortiGate | |
---|---|
Extended | |
FortiClient | |
Extreme | |
FortiAPS | |
FortiAPU | |
FortiMail | |
Extreme | |
FortiSandbox | |
Extreme | |
FortiWeb | |
Extreme | |
Web Application Firewall | |
Extreme | |
FortiIsolator | |
Extreme | |
FortiDeceptor | |
Extreme | |
FortiEDR |