General
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Target
Umbral.exe
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Size
231KB
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MD5
157dc3d81fee89af95e44300cb46bb94
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SHA1
f7684bd8a11526a7cebeb668e32a01498785ed92
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SHA256
72ec2b7ff3142521a6e640371dbf03125af27057f77ab08e2d50b0f7e3f97f7f
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SHA512
fb7e7fa91fb1efef7d2e95578f305a9d81e48c8ad229cef9404abe7688d9cb8981ccd779a1ad2604d877a3cbeb6d7c5f4c5f46c07cffb309c06b44c50e9d39db
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SSDEEP
6144:RloZMrfsXtioRkts/cnnK6cMlF5zgkqNlOZLWU1pAE7b8e1mW/i:joZBtlRk83MlF5zgkqNlOZLWU1pACe
Malware Config
Extracted
umbral
https://discordapp.com/api/webhooks/1253659182083735612/o6G3aWQyoLLi3oFEUYi57E3RegF6T6Q5uqOdkWcNkWU6OkDJP8Ppr9SKMntl4Gmn4Law
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: 228KB - Virtual size: 228KB
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