General
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Target
SolaraBootstrapper.exe
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Size
12KB
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Sample
240523-s8g2wsgc75
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MD5
06f13f50c4580846567a644eb03a11f2
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SHA1
39ee712b6dfc5a29a9c641d92c7467a2c4445984
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SHA256
0636e8f9816b17d7cff26ef5d280ce1c1aae992cda8165c6f4574029258a08a9
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SHA512
f5166a295bb0960e59c176eefa89c341563fdf0eec23a45576e0ee5bf7e8271cc35eb9dd56b11d9c0bbe789f2eac112643108c46be3341fa332cfcf39b4a90b9
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SSDEEP
192:cDnQvi7auc35nuKdhAWVIanaLvmr/XKTxnTc1BREVXLGDlNjA:cDn97auc35tAKIanayzKto1jEVQzj
Static task
static1
Behavioral task
behavioral1
Sample
SolaraBootstrapper.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
SolaraBootstrapper.exe
Resource
win10v2004-20240426-en
Malware Config
Targets
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Target
SolaraBootstrapper.exe
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Size
12KB
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MD5
06f13f50c4580846567a644eb03a11f2
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SHA1
39ee712b6dfc5a29a9c641d92c7467a2c4445984
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SHA256
0636e8f9816b17d7cff26ef5d280ce1c1aae992cda8165c6f4574029258a08a9
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SHA512
f5166a295bb0960e59c176eefa89c341563fdf0eec23a45576e0ee5bf7e8271cc35eb9dd56b11d9c0bbe789f2eac112643108c46be3341fa332cfcf39b4a90b9
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SSDEEP
192:cDnQvi7auc35nuKdhAWVIanaLvmr/XKTxnTc1BREVXLGDlNjA:cDn97auc35tAKIanayzKto1jEVQzj
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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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 NtCreateThreadExHideFromDebugger
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Suspicious use of NtSetInformationThreadHideFromDebugger
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