Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240708-en
General
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Target
Umbral.exe
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Size
231KB
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MD5
64084e155f8e91598f994297efe19cbd
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SHA1
83b427e8f3b81d5b5dcc53e361c2eb00518bb2ab
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SHA256
bd4d72d38d56ab39ea25acd2ce87869f914f352397eae92634e1d8f9f576c8ff
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SHA512
5f0a26d8dd233c653345b9f163c13795f27322f99157271e1aaff948fda2d77d66d2e6c8b7bdc8b8ec5d08b459f1d847724ad6c3a5596d07c6e26bb9f95884de
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SSDEEP
6144:RloZM+rIkd8g+EtXHkv/iD4NrcPuMzvEUlwOffuGfOtLBM8e1mqYi:joZtL+EP8NrcPuMzvEUlwOffu+yL8P
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1262711649652047982/FIdpcVGZ4pW1eZJck-HOLPy2DWj0r08QIofSuONucwUTSEOEisfojM37_ZGaui9bnUht
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