General
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Target
InstallerDU__a591.exe
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Size
1.1MB
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Sample
230405-rhxh8afb66
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MD5
93aa40182be076b5789c7a84d1e220de
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SHA1
2fb5c002528e963d5a1bd62f4352ef046c689111
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SHA256
8bf19cc3b82146405600c66c581356b580f4a5bba6b9b97c11579b3c17321ce9
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SHA512
6b06d7ba43e12802bfbc170ffd6e4c80a4c0c9a58c1b374d45163c3d3fd4a23cfb92751e520cf213c2199e9aab62a48adb4834c7a24302d24f87ea133470b401
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SSDEEP
24576:AU5MGdL0sYGepOqv++Y8+5f3uT/tzXszW7+TyxXpY9BQ74aK+Qa0k:AU3LTYtpO0+Nv5feTqyuyrY9w9KtY
Malware Config
Targets
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Target
InstallerDU__a591.exe
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Size
1.1MB
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MD5
93aa40182be076b5789c7a84d1e220de
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SHA1
2fb5c002528e963d5a1bd62f4352ef046c689111
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SHA256
8bf19cc3b82146405600c66c581356b580f4a5bba6b9b97c11579b3c17321ce9
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SHA512
6b06d7ba43e12802bfbc170ffd6e4c80a4c0c9a58c1b374d45163c3d3fd4a23cfb92751e520cf213c2199e9aab62a48adb4834c7a24302d24f87ea133470b401
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SSDEEP
24576:AU5MGdL0sYGepOqv++Y8+5f3uT/tzXszW7+TyxXpY9BQ74aK+Qa0k:AU3LTYtpO0+Nv5feTqyuyrY9w9KtY
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Downloads MZ/PE file
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ACProtect 1.3x - 1.4x DLL software
Detects file using ACProtect software.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Executes dropped EXE
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Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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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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Suspicious use of NtSetInformationThreadHideFromDebugger
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