OctLurk and SilkLurk: new Backdoors in Central Asia
Two newly identified backdoors, OctLurk and SilkLurk, have been targeting government organizations across Central Asia since January 2025. Victims span Afghanistan, Kyrgyzstan, Tajikistan, Uzbekistan, Kazakhstan, and Syria, affecting healthcare, research, government offices, ministries of foreign affairs, logistics, law enforcement, urban planning, and educational institutions. Both backdoors employ heavily obfuscated loaders customized per victim, using machine-specific data for decryption. They deploy multiple plugins for command execution, file manipulation, credential harvesting, keylogging, network scanning, and remote access. The attackers also utilized LurkProxy for network traffic proxying and deployed additional tools including PlugX, Impacket, FSCAN, and Pandora FMS agents. Analysis indicates both backdoors are operated by the same Chinese-speaking threat actor, though attribution to a specific known group remains unconfirmed. The campaigns demonstrate sophisticated persistence mechanisms and ext...
Indicators of Compromise
- hash: 62944e26b36b1dcace429ae26ba66164
- hash: cf903e4a1629aa0582fd0363b5786676
- hash: 9a1dd1d96481d61934dcc2d568971d06
- domain: confbase.mdpsupport.net
- hash: 18dc8bff47cc282508354771d0c8cf8c
- hash: cc5cc2546d3ea8e27250cc4bec24f6ca13caf341
- hash: 23b122deea347dbe2407c1542c1cc6caaafca537eb5d1950a4ed7c8a69395dbb
- domain: fm01.clouddevicemetrics.com
- domain: ssl.blsouqs.com
- hash: 082d49ef9f14e6811d68c7e0e82e5069
- hash: 1415a78b75de7db4ba3d1e61d7db4501
- hash: 2a571f6cee42a17d873f4c942649813f
- hash: 2f18472866f38c1e1c2c5c14b9a6ab56
- hash: 32a5985543433a4f60da2fafd873b927
- hash: 37dc84e4bcad92fa28f1e7778d088283
- hash: 3c9a1ba8e0c7475706adc6376e9d7b7c
- hash: 45cf5916fab4272a1313c26e67aa9220
- hash: 4e6d5c4770d5a822d7fcce6a74f7ad73
- hash: 5e26df131ff0a679a0a2699b723b46e3
- hash: 6ecf84fb18f6747ed08d7598364d853a
- hash: 7c2f64461bb519c6cbf1fc687675514c
- hash: 8269d6ba1b6842f9152c90cf7add9b93
- hash: a0cc7accc79abb0287aaba825d0351f0
- hash: a4d550a3ba0cd073fe3839b99d98a7a8
- hash: a56cce62930a6bee80d679b4c495a340
- hash: b874123a80fc4f40e06872b9cb54ebc6
- hash: be4731c09734da2e8eb6814a9c82f266
- hash: ef59aad625eebda8650aec5820d6ce69
- hash: f4578e869a735cfad691f927bae3e638
- domain: about.blsouqs.com
- domain: api2.annoyingremote.com
- domain: ctyuhjerf.kozow.com
- domain: digital.leroymerling.com
- domain: dns.multitoconference.com
- domain: dns.ssentialserv.xyz
- domain: gycudore.kozow.com
- domain: rgnojb.casacam.net
- domain: tj.tajikistandip.com
- domain: tyhbgtyuj.gleeze.com
- domain: uyhvfredc.accesscam.org
- domain: wedfcvbn.gleeze.com
OctLurk and SilkLurk: new Backdoors in Central Asia
Description
Two newly identified backdoors, OctLurk and SilkLurk, have been targeting government organizations across Central Asia since January 2025. Victims span Afghanistan, Kyrgyzstan, Tajikistan, Uzbekistan, Kazakhstan, and Syria, affecting healthcare, research, government offices, ministries of foreign affairs, logistics, law enforcement, urban planning, and educational institutions. Both backdoors employ heavily obfuscated loaders customized per victim, using machine-specific data for decryption. They deploy multiple plugins for command execution, file manipulation, credential harvesting, keylogging, network scanning, and remote access. The attackers also utilized LurkProxy for network traffic proxying and deployed additional tools including PlugX, Impacket, FSCAN, and Pandora FMS agents. Analysis indicates both backdoors are operated by the same Chinese-speaking threat actor, though attribution to a specific known group remains unconfirmed. The campaigns demonstrate sophisticated persistence mechanisms and ext...
Technical Details
- Author
- AlienVault
- Tlp
- white
- References
- ["https://securelist.com/octlurk-silklurk-backdoors-central-asia/120840/"]
- Adversary
- null
- Pulse Id
- 6a6b4b97df5f9df74333adfa
- Threat Score
- null
Indicators of Compromise
Hash
| Value | Description | Copy |
|---|---|---|
hash62944e26b36b1dcace429ae26ba66164 | — | |
hashcf903e4a1629aa0582fd0363b5786676 | — | |
hash9a1dd1d96481d61934dcc2d568971d06 | — | |
hash18dc8bff47cc282508354771d0c8cf8c | — | |
hashcc5cc2546d3ea8e27250cc4bec24f6ca13caf341 | — | |
hash23b122deea347dbe2407c1542c1cc6caaafca537eb5d1950a4ed7c8a69395dbb | — | |
hash082d49ef9f14e6811d68c7e0e82e5069 | — | |
hash1415a78b75de7db4ba3d1e61d7db4501 | — | |
hash2a571f6cee42a17d873f4c942649813f | — | |
hash2f18472866f38c1e1c2c5c14b9a6ab56 | — | |
hash32a5985543433a4f60da2fafd873b927 | — | |
hash37dc84e4bcad92fa28f1e7778d088283 | — | |
hash3c9a1ba8e0c7475706adc6376e9d7b7c | — | |
hash45cf5916fab4272a1313c26e67aa9220 | — | |
hash4e6d5c4770d5a822d7fcce6a74f7ad73 | — | |
hash5e26df131ff0a679a0a2699b723b46e3 | — | |
hash6ecf84fb18f6747ed08d7598364d853a | — | |
hash7c2f64461bb519c6cbf1fc687675514c | — | |
hash8269d6ba1b6842f9152c90cf7add9b93 | — | |
hasha0cc7accc79abb0287aaba825d0351f0 | — | |
hasha4d550a3ba0cd073fe3839b99d98a7a8 | — | |
hasha56cce62930a6bee80d679b4c495a340 | — | |
hashb874123a80fc4f40e06872b9cb54ebc6 | — | |
hashbe4731c09734da2e8eb6814a9c82f266 | — | |
hashef59aad625eebda8650aec5820d6ce69 | — | |
hashf4578e869a735cfad691f927bae3e638 | — |
Domain
| Value | Description | Copy |
|---|---|---|
domainconfbase.mdpsupport.net | — | |
domainfm01.clouddevicemetrics.com | — | |
domainssl.blsouqs.com | — | |
domainabout.blsouqs.com | — | |
domainapi2.annoyingremote.com | — | |
domainctyuhjerf.kozow.com | — | |
domaindigital.leroymerling.com | — | |
domaindns.multitoconference.com | — | |
domaindns.ssentialserv.xyz | — | |
domaingycudore.kozow.com | — | |
domainrgnojb.casacam.net | — | |
domaintj.tajikistandip.com | — | |
domaintyhbgtyuj.gleeze.com | — | |
domainuyhvfredc.accesscam.org | — | |
domainwedfcvbn.gleeze.com | — |
Threat ID: 6a6c856d9c2644c7f8ba4277
Added to database: 07/31/2026, 11:22:21 UTC
Last updated: 07/31/2026, 11:23:32 UTC
Views: 3
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