General
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Target
downloader (21).exe
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Size
70.1MB
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Sample
240821-vatddazcnf
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MD5
9a8c72bdef6db44c7808c3958c17b757
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SHA1
64c63f477df307da20b1254262c3fc5d15147989
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SHA256
c988e3d0174cd253d28e9311f1b0f7d7bc291414aef7a904b742ed43391ca83b
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SHA512
7a88191bdb74623494e6da37ab5f785aaa201ef9adb0c568eaf68a1d9bd0bada3d3495329d77c0781e68444079cc4ef396665553ec3fc096f8572a27bf560cf6
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SSDEEP
393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qnsGg4GUo3Na:lWoI7zGV5ahWc3Im4
Static task
static1
Behavioral task
behavioral1
Sample
downloader (21).exe
Resource
win7-20240704-en
Malware Config
Extracted
xworm
5.0
88.0.183.177:1603
88.0.172.65:1603
83.36.190.196:1603
83.38.30.219:1603
XpRJMNcN9dWrZEo0
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Install_directory
%ProgramData%
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install_file
RuntimeBroker.exe
Extracted
xworm
88.0.183.177:1603
88.0.172.65:1603
83.36.190.196:1603
83.38.30.219:1603
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Install_directory
%Temp%
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install_file
SecurityHealthSystray.exe
Targets
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Target
downloader (21).exe
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Size
70.1MB
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MD5
9a8c72bdef6db44c7808c3958c17b757
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SHA1
64c63f477df307da20b1254262c3fc5d15147989
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SHA256
c988e3d0174cd253d28e9311f1b0f7d7bc291414aef7a904b742ed43391ca83b
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SHA512
7a88191bdb74623494e6da37ab5f785aaa201ef9adb0c568eaf68a1d9bd0bada3d3495329d77c0781e68444079cc4ef396665553ec3fc096f8572a27bf560cf6
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SSDEEP
393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qnsGg4GUo3Na:lWoI7zGV5ahWc3Im4
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Detect Xworm Payload
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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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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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Adds Run key to start application
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1