Gunra Ransomware Group Unveils Efficient Linux Variant

2025-07-29 • Trend Micro •

https://www.trendmicro.com/en_us/research/25/g/gunra-ransomware-linux-variant.html

Attachments

Gunra-Ransomware-IoCs9yssWBR.txt (834 B)

Thumbnail for Gunra Ransomware Group Unveils Efficient Linux Variant

Gunra expanded its ransomware operations with a configurable Linux variant capable of running up to 100 encryption threads. The malware uses ChaCha20 for file data and RSA to protect generated key material, supports partial encryption, and can target selected extensions, directories, individual files, or explicitly specified block devices. Encrypted files receive the `.ENCRT` extension, while the Linux build omits a ransom note and can store RSA-encrypted blobs in separate keystore files.

Indicators of Compromise

Type Value First Seen Last Seen
HASH a82e496b7b5279cb6b93393ec167dd3… 2025-07-29 2026-08-10
DOMAIN gunrabxbig445sjqa535uaymzerj6fp… 2025-07-29 2026-08-10
HASH 91f8fc7a3290611e28a35a403fd8155… 2025-07-25 2026-08-10
HASH 22c47ec98718ab243f2f474170366a1… 2025-07-25 2025-10-22
HASH 76f13279f2ea05c8895394f57b71716… 2025-07-29 2025-09-23
HASH 5530363373dfe8fa474c9394184d2c5… 2025-07-29 2025-09-23
HASH 944a1a411abb97f9ae547099c4834be… 2025-07-29 2025-09-23
DOMAIN 2bw7r32r5eshwk2h7uekj3lwzorxds2… 2025-07-29 2025-09-23
DOMAIN jzbhtsuwysslrzi2n5is3gmzsyh6ayh… 2025-07-29 2025-09-23
HASH 854e5f77f788bbbe6e224195e115c74… 2025-07-29 2025-09-23

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