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General
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Target
Bootstrapper.exe
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Size
797KB
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Sample
240725-21qhqstdrg
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MD5
86bf094b70901e55a281e0a0683dd8b3
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SHA1
24afc916d186facaf7885363bf335e3e5b7d69b9
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SHA256
2a4255d739e42838d49159d7228952b512a2c8ccb6f4b0c8d35543912130dac6
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SHA512
2f33349c13f7778869f4e200380acd9c12e41a981a30005ad01aa8c29442d9bfdfb2a76a1b589be1efb2e4a314cbdf92f691a12b0fa487af4160e7d87ff25e56
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SSDEEP
12288:e/+ubxKHJg5bbEjlsqRoAQpjFVfG0c4XqCon9hUpVo34u:Q+ubYHYqRoAQpjFVG0HXqlF4u
Static task
static1
Behavioral task
behavioral1
Sample
Bootstrapper.exe
Resource
win7-20240704-en
Malware Config
Targets
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Target
Bootstrapper.exe
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Size
797KB
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MD5
86bf094b70901e55a281e0a0683dd8b3
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SHA1
24afc916d186facaf7885363bf335e3e5b7d69b9
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SHA256
2a4255d739e42838d49159d7228952b512a2c8ccb6f4b0c8d35543912130dac6
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SHA512
2f33349c13f7778869f4e200380acd9c12e41a981a30005ad01aa8c29442d9bfdfb2a76a1b589be1efb2e4a314cbdf92f691a12b0fa487af4160e7d87ff25e56
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SSDEEP
12288:e/+ubxKHJg5bbEjlsqRoAQpjFVfG0c4XqCon9hUpVo34u:Q+ubYHYqRoAQpjFVG0HXqlF4u
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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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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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Executes dropped EXE
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Loads dropped DLL
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Blocklisted process makes network request
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Suspicious use of NtSetInformationThreadHideFromDebugger
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