General
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Target
SolaraB2 (1).zip
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Size
279KB
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Sample
240615-lxyf6szdkq
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MD5
bf72c7f0929c3e61b6e43eadcdea0e63
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SHA1
a62e31ab77aad711f583e6ef7557aba22ba16f07
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SHA256
df4e6521df02bc5d192fe56f93c730ff9dd7cd28f6d39b0953fdc44308ef7f27
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SHA512
a10928feb07969e2a7d463259baa5937a3eedb629b210ab5ea72b079f178c46a32cd39d7ab0a25b455a2bcc464e067f73ab3d718a3771f2d5efd196723f039eb
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SSDEEP
6144:Vyz+oHOzk5fK2+rpyfh+2nfezLycnt1Laxe2guZHyHsJNSm83vi/1tQA8n:VfouY5fv+A+2n21LuRFR4izQbn
Static task
static1
Behavioral task
behavioral1
Sample
SolaraB2/SolaraBootstrapper.exe
Resource
win10-20240404-en
Malware Config
Targets
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Target
SolaraB2/SolaraBootstrapper.exe
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Size
798KB
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MD5
baa81d6b98890ac06befe560d00be992
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SHA1
b69769c15af3ff85ca16a4ee579ea7fd959179e9
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SHA256
ec710ba066a78e3faf19b9d9a589ace5540a6a31551dc977b533e7d67352f87b
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SHA512
ded06cff210a201a53670ab55078c4edfcc0c4137af04b1ad3966b69464ec717957508b341d5f5fef485679bdd841017c420a14217d9480181a03fcd9aaad7f1
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SSDEEP
12288:PZZmz3HwnXFZ9RgoOojAojAbJaTGLLvlguxD:3mz3Hi9tOojAojAbdLL
Score9/10-
Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Downloads MZ/PE file
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Sets file execution options in registry
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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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Registers COM server for autorun
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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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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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