General
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Target
utweb_installer.exe
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Size
1.7MB
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Sample
240522-c6yzmahh8x
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MD5
5285ef6e9757a6d1335cdae5cbf4e05f
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SHA1
cf79734fceb53a6871d8c5b50f0479d466c05144
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SHA256
a75c4cafd609535d2a23100e403be32723d8d64541f28389f2c857cd2d0b74cc
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SHA512
f0c551557cef134a8a47183337063453833e2b11a0c6ff57e1a209338bb57b5884eb52fbe9d5e83f3f549e0f1dbd46bd877d3749e8dbf7f8b34e25d6bcb907e6
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SSDEEP
24576:u7FUDowAyrTVE3U5FPF248wUMYSAba9ZA3mKZtMr3c7YB/LfDUkPV39qJ3XNEQh:uBuZrEUpx8wUGAuhKrMr3gE/LbUp3dRh
Static task
static1
Behavioral task
behavioral1
Sample
utweb_installer.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
utweb_installer.exe
Resource
win10v2004-20240426-en
Malware Config
Targets
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Target
utweb_installer.exe
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Size
1.7MB
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MD5
5285ef6e9757a6d1335cdae5cbf4e05f
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SHA1
cf79734fceb53a6871d8c5b50f0479d466c05144
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SHA256
a75c4cafd609535d2a23100e403be32723d8d64541f28389f2c857cd2d0b74cc
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SHA512
f0c551557cef134a8a47183337063453833e2b11a0c6ff57e1a209338bb57b5884eb52fbe9d5e83f3f549e0f1dbd46bd877d3749e8dbf7f8b34e25d6bcb907e6
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SSDEEP
24576:u7FUDowAyrTVE3U5FPF248wUMYSAba9ZA3mKZtMr3c7YB/LfDUkPV39qJ3XNEQh:uBuZrEUpx8wUGAuhKrMr3gE/LbUp3dRh
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Drops file in Drivers directory
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Manipulates Digital Signatures
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
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Sets service image path in registry
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Adds Run key to start application
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Checks for any installed AV software in registry
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Downloads MZ/PE file
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Modifies Installed Components in the registry
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Sets file execution options in registry
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
5Registry Run Keys / Startup Folder
5Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
5Registry Run Keys / Startup Folder
5Defense Evasion
Modify Registry
6Pre-OS Boot
1Bootkit
1Subvert Trust Controls
2Install Root Certificate
1SIP and Trust Provider Hijacking
1