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 22c47ec98718ab243f2f474170366a1… 2025-07-25 2025-10-22
DOMAIN 2bw7r32r5eshwk2h7uekj3lwzorxds2… 2025-07-29 2025-09-23
DOMAIN jzbhtsuwysslrzi2n5is3gmzsyh6ayh… 2025-07-29 2025-09-23
DOMAIN gunrabxbig445sjqa535uaymzerj6fp… 2025-07-29 2025-09-23
HASH 854e5f77f788bbbe6e224195e115c74… 2025-07-29 2025-09-23
HASH 91f8fc7a3290611e28a35a403fd8155… 2025-07-25 2025-08-27
HASH 912217b09b13e1e53f7f26335f7f84b… 2025-07-29 2025-07-29
HASH 79e19d3d8405425735e4b3cd36a8507… 2025-07-29 2025-07-29
HASH 0c3c878b678c7254446e84cca6f0d63… 2025-07-29 2025-07-29
HASH bb79502d301ba77745b7dbc5df4269f… 2025-07-29 2025-07-29

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