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General
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Target
downloader.exe
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Size
70.1MB
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Sample
240821-pat21sxeqh
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MD5
de8c4fd7ed1b7623ab3c9a4e55c17211
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SHA1
40f68eb4eb8194fa236f13e980d7d0940db0a9fe
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SHA256
192933cb274a687f0072e0db4064e4ee9080b95e303fd0ab9347760bc091e3c2
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SHA512
85c4bd56d6187c10baf3278de30268379b23131025e9fb6f21cf040d29c7291db6d3d1beefe0c9a7c814d932f34b0a22bf3443184f30dc4e0244eab2230c374b
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SSDEEP
393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qEsGg4GUo3Nf:lWoI7zGi5ahWc3Im9
Static task
static1
Behavioral task
behavioral1
Sample
downloader.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.exe
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Size
70.1MB
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MD5
de8c4fd7ed1b7623ab3c9a4e55c17211
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SHA1
40f68eb4eb8194fa236f13e980d7d0940db0a9fe
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SHA256
192933cb274a687f0072e0db4064e4ee9080b95e303fd0ab9347760bc091e3c2
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SHA512
85c4bd56d6187c10baf3278de30268379b23131025e9fb6f21cf040d29c7291db6d3d1beefe0c9a7c814d932f34b0a22bf3443184f30dc4e0244eab2230c374b
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SSDEEP
393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qEsGg4GUo3Nf:lWoI7zGi5ahWc3Im9
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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