General
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Target
downloader.exe
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Size
70.1MB
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Sample
240824-jmdynszfkd
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MD5
313c3b8cfe6d66ee879a14e3f29f543b
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SHA1
4e9dd98d84be6197b5088205e17bdabab48074ea
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SHA256
e71824ee54837240843a2df469a0f587db8d39dd44173f6ce822890b677c4ed1
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SHA512
a6efa093cd77343f3cc0ac6319337416ef9fa27fd63fd20cccf3ff2ea19233d505c7d3cac85ffdeaef9cbdf85957c1016b3996d42171c26e061f3de894a1e6a2
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SSDEEP
393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qIsGg4GUo3Nw:lWoI7zG+5ahWc3Ime
Static task
static1
Behavioral task
behavioral1
Sample
downloader.exe
Resource
win7-20240705-en
Malware Config
Extracted
xworm
83.38.19.195:1603
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Install_directory
%Temp%
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install_file
Runtime Broker.exe
Targets
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Target
downloader.exe
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Size
70.1MB
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MD5
313c3b8cfe6d66ee879a14e3f29f543b
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SHA1
4e9dd98d84be6197b5088205e17bdabab48074ea
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SHA256
e71824ee54837240843a2df469a0f587db8d39dd44173f6ce822890b677c4ed1
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SHA512
a6efa093cd77343f3cc0ac6319337416ef9fa27fd63fd20cccf3ff2ea19233d505c7d3cac85ffdeaef9cbdf85957c1016b3996d42171c26e061f3de894a1e6a2
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SSDEEP
393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qIsGg4GUo3Nw:lWoI7zG+5ahWc3Ime
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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