General
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Target
https://youtube.com
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Sample
240623-mtwc3ssdqr
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://youtube.com
Resource
win10v2004-20240611-en
Malware Config
Extracted
asyncrat
0.5.8
T
20.199.8.16:1726
31FGTEWnaxDE
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delay
3
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install
false
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install_file
SeacrhIndexer
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install_folder
%AppData%
Extracted
asyncrat
0.5.8
Y
20.199.8.16:1726
eYLuHMmPZK7A
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delay
3
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install
false
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install_file
SeacrhIndexer
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install_folder
%AppData%
Extracted
xworm
5.0
Extracted
xworm
auto-london.gl.at.ply.gg:51655
wiz.bounceme.net:6000
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Install_directory
%LocalAppData%
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install_file
NigNigRat.exe
Extracted
gurcu
https://api.telegram.org/bot7135635206:AAGyO5ndYz5tM5LiN-svz-5L8kLQuZwOEqM/sendPhot
Targets
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-
Target
https://youtube.com
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Detect Xworm Payload
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Async RAT payload
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Downloads MZ/PE file
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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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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Uses the VBS compiler for execution
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Hide Artifacts: Hidden Files and Directories
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Scripting
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
1Hide Artifacts
3Hidden Files and Directories
3Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Modify Registry
4Scripting
1Subvert Trust Controls
1Install Root Certificate
1