General
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Target
2025-03-01_f9ffbad54a868dec678f79cc583c5f95_ismagent_ryuk_sliver
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Size
2.9MB
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Sample
250301-l9bsyax1at
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MD5
f9ffbad54a868dec678f79cc583c5f95
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SHA1
a5c892b1ca7feb7d82c44394dda1eac306e6f674
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SHA256
56fbcb8a44a9870fdea8cbe69567220d98f4092cf47d59f450c3f378cb95136d
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SHA512
e540eaf2e0257e9be4d0e37f9b04f949d3563af30c5e63c5e332c785410aae30a3999b3b912e6cba458047e41a841b9e49d294792103620ff4c8abe967ea25d8
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SSDEEP
49152:1yEEFoRjQ86ctQAWrk9k+PhBFB3FFIBoYCIYSMFvf0VQc9pdQPi:1nj36pUk0TkfYiQ/i
Behavioral task
behavioral1
Sample
2025-03-01_f9ffbad54a868dec678f79cc583c5f95_ismagent_ryuk_sliver.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2025-03-01_f9ffbad54a868dec678f79cc583c5f95_ismagent_ryuk_sliver.exe
Resource
win10v2004-20250217-en
Malware Config
Extracted
meshagent
2
TORUŃ_BIURO
http://telbmc3t.telbridge:443/agent.ashx
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mesh_id
0x445D64B5A8329B892A143B2D5EE04236CA4980B72D4D55FA00EB4AB75F6A1DDA62A118FCA7866B8ABBEFF5BB5C7571B1
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server_id
9B5005CC4067F497A7E7934F8BB2EB09848772D6E44A4FE31B5F153284A8E7DF73F7037E7326F7DF36B9841E820BFE4F
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wss
wss://telbmc3t.telbridge:443/agent.ashx
Targets
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Target
2025-03-01_f9ffbad54a868dec678f79cc583c5f95_ismagent_ryuk_sliver
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Size
2.9MB
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MD5
f9ffbad54a868dec678f79cc583c5f95
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SHA1
a5c892b1ca7feb7d82c44394dda1eac306e6f674
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SHA256
56fbcb8a44a9870fdea8cbe69567220d98f4092cf47d59f450c3f378cb95136d
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SHA512
e540eaf2e0257e9be4d0e37f9b04f949d3563af30c5e63c5e332c785410aae30a3999b3b912e6cba458047e41a841b9e49d294792103620ff4c8abe967ea25d8
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SSDEEP
49152:1yEEFoRjQ86ctQAWrk9k+PhBFB3FFIBoYCIYSMFvf0VQc9pdQPi:1nj36pUk0TkfYiQ/i
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Detects MeshAgent payload
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Meshagent family
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Modifies Windows Firewall
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Sets service image path in registry
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1