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General
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Target
Umbral.exe
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Size
229KB
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MD5
6743f7ff6fc7ca5a26be995ad9f2a2ec
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SHA1
9afd04785b6d64fecaf716be09a6521ff9fc723b
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SHA256
354e9e533a21c053448fcd4baf837f9c36ffbd6467cfdca6519ec70b2974653d
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SHA512
f99f2bc59c8e4a3121be2c2223597800e0b79be4ff27101492f75beb8f4a8cd57875e275ac30865bb145842c7cde306071f04cb39e82db4c978f725694db9bb5
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SSDEEP
6144:9loZMzrIkd8g+EtXHkv/iD4tV6ClS8e1mZMqi:foZcL+EP8TiN
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1335627271188381807/tO4k8UXuFM44y4xA4ltRGnEe494HtRm9xsxKDfxBEI3WWnPMHArGjT8Vpow7vrR5I_N-
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: 227KB - Virtual size: 226KB
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