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General
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Target
Setup.exe
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Size
296KB
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Sample
240727-zxcrcsyfrn
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MD5
4fbc8b878d44721f4f838334ac218ca3
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SHA1
ab1bbbc858c32c512f3670db42da607ff8f5d797
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SHA256
9bed2d09b228519b7b0d423d96e05d45193b88f9669b3d7373ce92b8466ce072
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SHA512
804ece432385d03e546d247afa9f60722458262461e669792f24bf23704779b241c2562792aeec0cf7d450d61a967515e712704f33ede2814004d97cc3adde89
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SSDEEP
3072:B9UoZkSvCRLTcda4bl7gWz3vW/XhQMg2t6tqnJr:Be8kCCRLTcs4blxvWvhDGq
Static task
static1
Behavioral task
behavioral1
Sample
Setup.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
Setup.exe
Resource
win10v2004-20240704-en
Malware Config
Extracted
xworm
Valdemar-62425.portmap.host:62425
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Install_directory
%ProgramData%
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install_file
WinSysUpdater32.exe
Targets
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Target
Setup.exe
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Size
296KB
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MD5
4fbc8b878d44721f4f838334ac218ca3
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SHA1
ab1bbbc858c32c512f3670db42da607ff8f5d797
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SHA256
9bed2d09b228519b7b0d423d96e05d45193b88f9669b3d7373ce92b8466ce072
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SHA512
804ece432385d03e546d247afa9f60722458262461e669792f24bf23704779b241c2562792aeec0cf7d450d61a967515e712704f33ede2814004d97cc3adde89
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SSDEEP
3072:B9UoZkSvCRLTcda4bl7gWz3vW/XhQMg2t6tqnJr:Be8kCCRLTcs4blxvWvhDGq
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Detect Xworm Payload
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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 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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Adds Run key to start application
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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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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