General
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Target
Umbral.exe
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Size
229KB
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MD5
0d1e74889be7709c1dae9d6756b9b3b7
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SHA1
ef85e27173b126f696fe55d67581f3b250349bc3
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SHA256
4bbc45bf252d27ce7c84ff273aa33f79e8e76af94436d56312df007ca8262e52
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SHA512
3e65ebd7622c393eac235fe14284a29144bc1ee9a0d8dc2f68825fb05a8ce0f536204b3f3749f6938a8b907bde649145b188a966232bd24ec7720bec2d9c8942
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SSDEEP
6144:dloZMmXU9Zx0kt8X0/PSCsMxGfig4+ZRSU3q459cJpb8e1mti:/oZWf0kkP4Gfig4+ZRSU3q459c7H
Malware Config
Extracted
umbral
https://canary.discord.com/api/webhooks/1253365764233236571/dm0nj-ne2QLPUkozZTfvIbje9jYzKoCbdpI2hBivRDRAJVQ-wOqauD9QwzhWI_-l0QEQ
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 Umbral.exe
Files
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Umbral.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