[BreachExchange] FBI Shares Information on BlackCat Ransomware Attacks

[Matthew Wheeler]

https://www.securityweek.com/fbi-shares-information-blackcat-ransomware-attacks

The Federal Bureau of Investigation (FBI) this week published indicators of
compromise (IOCs) associated with the BlackCat Ransomware-as-a-Service
(RaaS).

Initially observed in November 2021 and also tracked as ALPHV and Noberus,
BlackCat is the first ransomware family to be written in the Rust
programming language.

As of March 2022, BlackCat had successfully compromised at least 60
organizations worldwide, the FBI said. The cybercriminals announced nine
new victims in April – as of April 21.

Security researchers recently revealed an increased interest from BlackCat
operators in targeting industrial organizations.

Security researchers have also connected BlackCat with the cybercrime group
behind the Darkside/Blackmatter ransomware.

BlackCat affiliates often demand ransom payments of millions of dollars,
but they have been observed accepting lower payments after negotiations
with their victims.

For initial access, the FBI explains, BlackCat employs compromised user
credentials. Next, Active Directory user and administrator accounts are
compromised and malicious Group Policy Objects (GPOs) are used to deploy
the ransomware, but not before victim data is exfiltrated.

As part of observed BlackCat attacks, PowerShell scripts, Cobalt Strike
Beacon, and legitimate Windows tools and Sysinternals utilities have been
used. The attackers were also seen disabling security features to move
unhindered within the victim’s network.

As usual, the FBI recommends not paying the ransom, as this would not
guarantee the recovery of compromised data, and urges organizations to
proactively deploy cybersecurity defenses that can help them prevent
ransomware attacks.
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