General
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Target
Umbral.exe
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Size
229KB
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MD5
e91e7d0ed8c652cc6d31b843ce779610
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SHA1
30100ace6bde410478ab46fd06ffb28759fbbd78
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SHA256
de9370ce0b17b04fa1deb6403251580f6cf32035659da7ed57756c08c690d666
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SHA512
9ccda4488fc512344ce51b6173da48902058df858ff82edbe906ef7c116800074823fc179f69ad687d4196d21bf4683ca5dc4a142f69a127714ae3dc37aa1130
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SSDEEP
6144:lloZM9rIkd8g+EtXHkv/iD4UZ7coOJBi0HaIJtMByb8e1mF56Yi:noZOL+EP8UZ7coOJBi0HaIJtMgs50
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1265599725864751124/kq2aCEcilzOe4g2D7AB6iQUW1gHJ6M7tRa2cn8JdlNbUcphaqNVxYRxknmdOBnbJxAr5
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