General
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Target
https://x.com/fousey/status/1845926953095954750
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Sample
250216-f6f1lavldr
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://x.com/fousey/status/1845926953095954750
Resource
win10ltsc2021-20250211-en
Malware Config
Targets
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Target
https://x.com/fousey/status/1845926953095954750
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Detect Pysilon
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Pysilon family
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Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Blocklisted process makes network request
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Browser Extensions
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Indicator Removal
1File Deletion
1Modify Registry
6Subvert Trust Controls
1Install Root Certificate
1