Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win10v2004-20240802-en
General
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Target
Umbral.exe
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Size
231KB
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MD5
f20d06c337e70063d367254f799c73b0
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SHA1
eb585163056bbaa73bc5f2a991dd361fa522016f
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SHA256
42a1434e9c6bcbd2f29f12a3ee3fa383c36f28e034440a555e12db91d44f66a6
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SHA512
51aa3dd6c8d37a49c3bade3b7b4cd86d7152819138bcc7e78d09cd41bc1623e6f9ba466f6d7598f0c79f3a418882aba77286d998ea72a9dea488d489d9e63473
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SSDEEP
6144:RloZMHrIkd8g+EtXHkv/iD4b1w4syVtGDTOMdRY45b8e1mR1i:joZIL+EP8b1w4syVtGDTOMdRY0x
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1275155954823991379/ZpedEdt0i9NmgvV7MMTsW8dZYAlhCDKoC7YUoM6CtxoDqkX2dyQyQYXrTnoMvFCil8lv
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