General
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Target
UltraViewer_setup_6.6.108_en.exe
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Size
3.5MB
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Sample
241104-v4m4fsvbjj
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MD5
cd546a1249e93ce0bc7df42fd06b3c68
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SHA1
9adb885f54107908413787d29dc8a3c04b2d19f5
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SHA256
fbcca6ee7a05063c2e7816f771b0ce370bc498620e2a8209ce2c0a50ee177313
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SHA512
b232ae44534f9ca77deb8b1291d902506f35d5de5c399f193c16198f7e3564e741f076e3763cf14e6ca779d2058b9ac57bfc53e09285326b752acd3affec5318
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SSDEEP
98304:D5zMfaTDdmodjsyRVfaP3kAjiWJrZWd9ViPJ:DO0ZjdjhVlncW7cJ
Static task
static1
Malware Config
Targets
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Target
UltraViewer_setup_6.6.108_en.exe
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Size
3.5MB
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MD5
cd546a1249e93ce0bc7df42fd06b3c68
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SHA1
9adb885f54107908413787d29dc8a3c04b2d19f5
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SHA256
fbcca6ee7a05063c2e7816f771b0ce370bc498620e2a8209ce2c0a50ee177313
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SHA512
b232ae44534f9ca77deb8b1291d902506f35d5de5c399f193c16198f7e3564e741f076e3763cf14e6ca779d2058b9ac57bfc53e09285326b752acd3affec5318
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SSDEEP
98304:D5zMfaTDdmodjsyRVfaP3kAjiWJrZWd9ViPJ:DO0ZjdjhVlncW7cJ
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Executes dropped EXE
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Loads dropped DLL
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Defense Evasion
Impair Defenses
1Modify Registry
1Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1