FBI Warns of New Hive Ransomware Threat
WASHINGTON — The Federal Bureau of Investigation distributed a Flash report on Friday warning of indicators of compromise from the Hive ransomware known to have infiltrated business networks.
The ransomware utilizes multiple mechanisms as attachments to gain access and “Remote Desktop Protocol” to operate once embedded, according to the FBI. Remote agents can then exfiltrate data and encrypt files on the network before leaving a ransom note within a victim’s system.
Victims can be targeted through phishing emails with malicious attachments. Hive’s ransom notes direct victims to purchase decryption software while threatening to leak exfiltrated data on the Tor web browser site known as “HiveLeaks.”
Hive ransomware can locate computer processes related to backups, anti-virus and anti-spyware, and file copying and eliminate them to enable unauthorized file encryption. During the process, encrypted files are renamed with the double final extension of “.key.hive” or “.key.” while a file named “HOW_TO_DECRYPT.txt” is deposited into the affected directories. The ransom explicitly maintains the “key.” file cannot be modified, renamed, or deleted, or else the encrypted files cannot be recovered.
Hive actors institute deadlines for payment between two to six days, but have prolonged deadlines when contacted by victim companies. Some victims claimed they received phone calls from Hive actors requesting payment for their stolen data.
If an entity discovers a ransomware attack, The FBI and the Cybersecurity and Infrastructure Security Agency recommend they isolate infected systems from all other networks, turn off other computers and devices, and secure their backup data. Ransomware victims should contact their local FBI field office for further assistance.
In cooperation with the investigation, the FBI may request certain network information from victims, such as a RAM capture, images of the infected systems, Bitcoin wallets used by the attackers, Bitcoin wallets used to pay the ransom, and the email addresses of the attackers. In the report, the FBI warns against paying a ransom to criminal actors as it may “embolden adversaries to target additional organizations, encourage other criminal actors to engage in the distribution of ransomware, and/or fund illicit activities.”