General
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Target
a03e9d78a3f0a89f5e9f98872635b6d8.exe
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Size
4.0MB
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Sample
220806-pffrkshaa3
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MD5
a03e9d78a3f0a89f5e9f98872635b6d8
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SHA1
54b29a0a0d05e9deb1b28ea08e72545774dee65a
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SHA256
68652defc71770065997b7d60a64a3959446a114a2ee17a443a15ae8b767f150
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SHA512
d3513a9c5ffdd8f156f62fb986edb2b95005dcc49105020839d8fba02dff88aa77d6870eec52db2ad56ce7cd377c839ec26864130cba4b9d1ad62199828883db
Malware Config
Extracted
oski
rgjeweller.mu/oski/
Targets
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Target
a03e9d78a3f0a89f5e9f98872635b6d8.exe
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Size
4.0MB
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MD5
a03e9d78a3f0a89f5e9f98872635b6d8
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SHA1
54b29a0a0d05e9deb1b28ea08e72545774dee65a
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SHA256
68652defc71770065997b7d60a64a3959446a114a2ee17a443a15ae8b767f150
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SHA512
d3513a9c5ffdd8f156f62fb986edb2b95005dcc49105020839d8fba02dff88aa77d6870eec52db2ad56ce7cd377c839ec26864130cba4b9d1ad62199828883db
Score10/10-
Detect Neshta payload
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Modifies system executable filetype association
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Oski
Oski is an infostealer targeting browser data, crypto wallets.
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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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Executes dropped EXE
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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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Loads dropped DLL
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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Themida packer
Detects Themida, an advanced Windows software protection system.
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Accesses cryptocurrency files/wallets, possible credential harvesting
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Adds Run key to start application
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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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Checks whether UAC is enabled
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