General
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Target
VenomServer.exe
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Size
229KB
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MD5
8592e87c9ce0b16668abffac801541f8
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SHA1
fd01f9543021891177b974b1f14f97ab332b2f7f
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SHA256
18d2df2e1cc1bd1e7192f036d0d3a2d1b0d9e9918982597fb7482b87f6cebfc7
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SHA512
2f817da7154f98dccf0f683245ad06d71f31bfcc77db707f195d229cb1834686ead2df96fb106701de4d4df0b365704d0370b88fce9471048a4b80f1d5ec9592
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SSDEEP
6144:tloZM+rIkd8g+EtXHkv/iD4qUWicCFdWNj+ctBI9Pb8e1mti:voZtL+EP8qUWicCFdWNj+ctBIB3
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1328209002764566561/UhpuEPgyDx2iFhVQ0LoUw03QEmTyLN2efT00m9vrUqo48i9qx3-bTXUFiMl2qSgxmsQp
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 VenomServer.exe
Files
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VenomServer.exe.exe windows:4 windows x86 arch:x86
Password: 1234
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