General
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Target
Umbral.exe
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Size
232KB
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MD5
3c6c341aff54be9bfc954d4dd7ff81c6
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SHA1
4994615f0a8b61cf7b8ac588f06f1054b54dcc08
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SHA256
176321678246f7b174c89ee34fca39721cbadc0864246e493f49c3b69da42e65
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SHA512
e90256e21ba022da2299a9612865861de22a9c4bcefc9e68c0337a90ea745453995cc360c8481fac3259848bec07248bcdc53c12a57bb911d3abc849708b06f3
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SSDEEP
6144:tloZM+rIkd8g+EtXHkv/iD4pZo9QWRJ6zvSgR1Ef3b8e1m+6ti:voZtL+EP8pZo9QWRJ6zvSgR1ELfP
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1277430984404369521/jqM07C4frDZHlUcuynmtbg7GZOsTJOCruF1VQbv_UzE-osSgzrEPMlaeWoJeCR_pn5LD
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: 229KB - Virtual size: 229KB
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