Babuk

S0638

Malware.View on attack.mitre.org

About this malware

Babuk is a Ransomware-as-a-service (RaaS) malware that has been used since at least 2021. The operators of Babuk employ a "Big Game Hunting" approach to targeting major enterprises and operate a leak site to post stolen data as part of their extortion scheme.

Techniques used14

Procedure examples14

TechniqueProcedure example
T1007
System Service Discovery

Babuk can enumerate all services running on a compromised host.

T1027.002
Software Packing

Versions of Babuk have been packed.

T1049
System Network Connections Discovery

Babuk can use “WNetOpenEnumW” and “WNetEnumResourceW” to enumerate files in network resources for encryption.

T1057
Process Discovery

Babuk has the ability to check running processes on a targeted system.

T1059.003
Windows Command Shell

Babuk has the ability to use the command line to control execution on compromised hosts.

T1083
File and Directory Discovery

Babuk has the ability to enumerate files on a targeted system.

T1106
Native API

Babuk can use multiple Windows API calls for actions on compromised hosts including discovery and execution.

T1135
Network Share Discovery

Babuk has the ability to enumerate network shares.

T1140
Deobfuscate/Decode Files or Information

Babuk has the ability to unpack itself into memory using XOR.

T1486
Data Encrypted for Impact

Babuk can use ChaCha8 and ECDH to encrypt data.

T1489
Service Stop

Babuk can stop specific services related to backups.

T1490
Inhibit System Recovery

Babuk has the ability to delete shadow volumes using vssadmin.exe delete shadows /all /quiet.

T1680
Local Storage Discovery

Babuk can enumerate disk volumes, get disk information, and query service status.

T1685
Disable or Modify Tools

Babuk can stop anti-virus services on a compromised host.

Groups that use it0

None recorded.

Campaigns0

None recorded.

References3

  1. CyberScoop Babuk February 2021 Open source
    Lyngaas, S. (2021, February 4). Meet Babuk, a ransomware attacker blamed for the Serco breach. Retrieved August 11, 2021.
  2. McAfee Babuk February 2021 Open source
    Mundo, A. et al. (2021, February). Technical Analysis of Babuk Ransomware. Retrieved August 11, 2021.
  3. Sogeti CERT ESEC Babuk March 2021 Open source
    Sogeti. (2021, March). Babuk Ransomware. Retrieved August 11, 2021.

Data from MITRE ATT&CK® (Enterprise). ATT&CK® is a registered trademark of The MITRE Corporation.