General
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Target
Umbral.exe
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Size
229KB
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MD5
dd294f4a30b78637d2de6ae794442508
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SHA1
2f28200fb482bb7f280ecde35070b8bf181900ef
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SHA256
a89f3d297cbac8b605cd554dd0ea7891c7fcff9e63c7c22810d1c8121fd128b1
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SHA512
cc4343ab3d9dc6f6eb8312a28df24442280144d3c54fe3fca65412b6285ae98c264a67a70a86b1fd73418bee535ea5adbe968e7b48a40ad833beaabf459d7bf5
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SSDEEP
6144:1loZMLrIkd8g+EtXHkv/iD4n9ruuMzvERlwOffu2/b8e1mR6i:XoZ0L+EP8n9ruuMzvERlwOffuYK
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1236047504458518648/JQRxvzCGg9gVDBGAsCh4Y7lt6-VpyZJcpy_w2pc8Qwt0sZVsg3Znypp4Lv0kPFzHxpM9
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