General
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Target
Umbral.exe
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Size
231KB
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MD5
967320916645d064c55bbb046526df05
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SHA1
c1a16294e93796b74ec339f4824ca52ed8168bc1
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SHA256
95898a7768f940dafb72443fae1572a25a631acb5e7481e0940939f4016db636
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SHA512
f9284986eb87df0995311c97a7983988d927379b9403ee01a8db65482a1f457f73b5ae3eb916b42fb4e0bb0496ae52454146d69098b9141dd507f8a82dbd3bdd
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SSDEEP
6144:RloZM3rIkd8g+EtXHkv/iD4VVnRLxCqVhQhTuOLzRMb8e1mvii:joZIL+EP8VVnRLxCqVhQhTuOL283
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1265851579425095720/MAxTNAZbFvW29JNDMjAGoaQVNutWrQ256VQXQU6nOeHclv6n6MjhmoSsgFOT1sgEy3Gt
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