General
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Target
driverloader.exe
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Size
229KB
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MD5
42c033c1207be55401d27198335476f4
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SHA1
6f17af9dabde85f9285e45f443aa64bcb61c35f7
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SHA256
bef3f8e3350b00f7e902560de251dc029553ec078edaf49531c1fe8ec220eb3b
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SHA512
5a02690e14dd014fd2e46e98fc8ac54e6ad6a6d3698b9ee95774874e1eddddcaf094782c6d10660a3f83016c1b881c21d68bd8d9be6af5a0c88e2acea10aac1d
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SSDEEP
6144:FloZMLrIkd8g+EtXHkv/iD4HVO3zZqStVY5rWWDBHb8e1mqDi:HoZ0L+EP8HVO3zZqStVY5rWWDF/O
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1276496146457559101/7_ptjDJWGansgnKVEYj-y4twxeR0-GnxdWKRrpBdnWLsTnqJjDk6El_U4WBbHCbTb1bd
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource driverloader.exe
Files
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driverloader.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 227KB - Virtual size: 226KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ