General
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Target
Umbral.exe
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Size
229KB
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MD5
468453ade106242c46c6ebc95df5e233
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SHA1
901875b848f10048764fe07c0c6ac7db7c33f551
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SHA256
2a92c314a04c06f608c96a0736b3ea76179085295b700019c9db0de2085e9d7d
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SHA512
4d351c895e3456ab926ff13c03f779f4804f8011085e311dcd16825f87ec6290b37d52a555e187ab748da40998301c8258a8c2c74d74640c795574590fa374eb
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SSDEEP
6144:lloZM9rIkd8g+EtXHkv/iD4hEnG1DA0r2SjVg8Zk5b8e1mhxi:noZOL+EP8hEnG1DA0r2SjVg8Zw8o
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1305189485495193700/R0P9VUM8phPeR6eYWoqnLbAbuvyNJyecQgNsqBxny_j-i9H3i3B5Wdt6c57GJxVKvA5y
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