Ransom.Win32.GOHIVE.RCY

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes then deletes itself afterward.

It drops files as ransom note. It avoids encrypting files with the following file extensions.

Arrival Details

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Ransomware drops the following files:

• {Malware File Path}hive.bat → Deleted Afterwards
• {Malware File Path}shadow.bat → Deleted Afterwards
• {Drive Letter}:\{22 Random Characters}.key.hive
• {Drive Letter}:\HOW_TO_DECRYPT.txt
• {Encrypted Directory}\HOW_TO_DECRYPT.txt

It adds the following processes:

• cmd /c hive.bat>NUL 2>NUL
• cmd /c shadow.bat>NUL 2>NUL
• vssadmin.exe delete shadows /all /quiet

It executes then deletes itself afterward.

Process Termination

This Ransomware terminates the following services if found on the affected system:

• bmr
• sql
• oracle
• postgres
• redis
• vss
• backup
• sstp

It terminates the following processes if found running in the affected system's memory:

• mspub
• msdesktop

Other Details

This Ransomware does the following:

• It accepts the following argument:
  • -kill {process name} → Regular expression for the names of processes to be stopped.
  • -no-clean → Skip clean disk space stage
  • -skip {file name} → Regular expression for file names to be skipped
  • -stop {service name} → Regular expression for stopping services
  • -t {int} → Number of encryptor threads
• It encrypts fixed, removable and network drives

Ransomware Routine

This Ransomware avoids encrypting files found in the following folders:

• Windows

It appends the following extension to the file name of the encrypted files:

• {Random Characters}.hive

It drops the following file(s) as ransom note:

• {Drive Letter}:\HOW_TO_DECRYPT.txt
• {Encrypted Directory}\HOW_TO_DECRYPT.txt
  

It avoids encrypting files with the following file extensions:

• lnk