General
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Target
https://bazaar.abuse.ch/
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Sample
250519-m5wszsxkz8
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://bazaar.abuse.ch/
Resource
win10v2004-20250502-en
Malware Config
Extracted
C:\d962f70874f5d4bfc1c6\Arcus-ReadMe.txt
http://arcuufpr5xxbbkin4mlidt7itmr6znlppk63jbtkeguuhszmc5g7qdyd.onion
https://tox.chat/download.html
Targets
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Target
https://bazaar.abuse.ch/
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Clears Windows event logs
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Downloads MZ/PE file
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Modifies Windows Firewall
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Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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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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MITRE ATT&CK Enterprise v16
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
1Defense Evasion
File and Directory Permissions Modification
1Impair Defenses
1Disable or Modify System Firewall
1Indicator Removal
2Clear Windows Event Logs
1File Deletion
1Modify Registry
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1