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FIVEHANDS

FIVEHANDS is a customized version of DEATHRANSOM ransomware written in C++. FIVEHANDS has been used since at least 2021, including in Ransomware-as-a-Service (RaaS) campaigns, sometimes along with SombRAT.[1][2]

ID: S0618
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Type: MALWARE
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Platforms: Windows
Version: 1.1
Created: 04 June 2021
Last Modified: 11 April 2024
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Enterprise Layer
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Techniques Used

Domain ID Name Use
Enterprise T1059 Command and Scripting Interpreter

FIVEHANDS can receive a command line argument to limit file encryption to specified directories.[1][2]
Enterprise T1486 Data Encrypted for Impact

FIVEHANDS can use an embedded NTRU public key to encrypt data for ransom.[1][3][2]
Enterprise T1140 Deobfuscate/Decode Files or Information

FIVEHANDS has the ability to decrypt its payload prior to execution.[1][3][2]
Enterprise T1083 File and Directory Discovery

FIVEHANDS has the ability to enumerate files on a compromised host in order to encrypt files with specific extensions.[3][2]
Enterprise T1490 Inhibit System Recovery

FIVEHANDS has the ability to delete volume shadow copies on compromised hosts.[1][3]
Enterprise T1135 Network Share Discovery

FIVEHANDS can enumerate network shares and mounted drives on a network.[2]
Enterprise T1027 .013 Obfuscated Files or Information: Encrypted/Encoded File

The FIVEHANDS payload is encrypted with AES-128.[1][3][2]
Enterprise T1047 Windows Management Instrumentation

FIVEHANDS can use WMI to delete files on a target machine.[1][3]

References

  1. McLellan, T. and Moore, J. et al. (2021, April 29). UNC2447 SOMBRAT and FIVEHANDS Ransomware: A Sophisticated Financial Threat. Retrieved June 2, 2021.
  2. Matthews, M. and Backhouse, W. (2021, June 15). Handy guide to a new Fivehands ransomware variant. Retrieved June 24, 2021.
  1. CISA. (2021, May 6). Analysis Report (AR21-126A) FiveHands Ransomware. Retrieved June 7, 2021.