General
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Target
Umbral.exe
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Size
228KB
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MD5
e8c01c0574c522af2bbc4fc6dd53142f
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SHA1
0b1ee816c4324d7db00842451c8759e91cfddab3
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SHA256
bd70c0afeae8898be7749a6078f44829d655bbabaebfbe6b4ef8286ad410f65d
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SHA512
2d800b808ae65e9900e9d21b82ddcafe9b4c066514bf23ebb43de1f62da13d0cd6fa09de2a8e81388712a72fa999ef201281b7c9e698d33a33a9fa93e3a6e08b
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SSDEEP
6144:OloZMHrIkd8g+EtXHkv/iD4VRCamkrHMZ9YW3X23fQb8e1mS/i:YoZIL+EP8VRCamkrHMZ9YW3X2A+
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1353446394329038948/xoevj695lYz_Src1FwPNDsG2c97axWgXoCohQ852PFxXpPuqkhbFjy-mTYc4dz3xU-KN
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: 225KB - Virtual size: 225KB
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