General
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Target
SolaraBoostrap .exe
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Size
229KB
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MD5
b7741b6a5e172eff7edfdc9ab19a649f
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SHA1
9c80488d840a98dac3860e21f1fa6be89cc3e898
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SHA256
7f1e40b82781c6149dd6f963e81636d226fc993f11e0c842f0df1b3e7a10caf8
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SHA512
d1e8a4005dd8554a45434568025a19270c871e778fb640daf7eefcb9aaf11a487c5b6c68d88572727888adf7207b0cafc9f97021557ce4c8437afa6750714552
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SSDEEP
6144:tloZMNrIkd8g+EtXHkv/iD4gnEt5nsAvcOXZkQlTLb8e1msi:voZ2L+EP8gnEt5nsAvcOXZkQljW
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1242894085392568363/FhGhdyPJefyLDfUPdOOham6cLZKHBijqUa_c9wnXWQFBGqBESeRcsETkQ6t9yxrSoPTR
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 SolaraBoostrap .exe
Files
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SolaraBoostrap .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