|THM Room: Dunkle Materie|
THM Dunkle Materie
The firewall alerted the Security Operations Center that one of the machines at the Sales department, which stores all the customers’ data, contacted the malicious domains over the network. When the Security Analysts looked closely, the data sent to the domains contained suspicious base64-encoded strings. The Analysts involved the Incident Response team in pulling the Process Monitor and network traffic data to determine if the host is infected. But once they got on the machine, they knew it was a ransomware attack by looking at the wallpaper and reading the ransomware note.
Find more evidence of compromise on the host and what ransomware was involved in the attack.
Provide the two PIDs spawned from the malicious executable. (In the order as they appear in the analysis tool)
|Click on the
|A list of processes that were active while
Provide the full path where the ransomware initially got executed? (Include the full path in your answer)
|Open the "LogFile.csv" file in notepad and search for
This ransomware transfers the information about the compromised system and the encryption results to two domains
HTTP POST. What are the two
C2 domains? (no space in the answer)
What are the IPs of the malicious domains? (no space in the answer)
|Double-click on the second instance of the malicious process (
captured data to find where
Provide the user-agent used to transfer the encrypted data to the C2 channel.
|Right-click on the
|Scroll down until you see information in red text with the
Provide the cloud security service that blocked the malicious domain.
|Right-click on the Cisco Server bubble,
Provide the name of the bitmap that the ransomware set up as a desktop wallpaper.
.bmp in the file
Find the PID (Process ID) of the process which attempted to change the background wallpaper on the victim’s machine.
The ransomware mounted a drive and assigned it a letter. Provide the registry key path to the mounted drive, including the drive letter.
and the registry path for the mounted device.
Now you have collected some IOCs from this investigation. Provide the name of the ransomware used in the attack. (external research required)
Look up the found
C2 servers on sites like VirusTotal and AlienVault to find the name of the Ransomware.