General
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Target
sihost.exe
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Size
230KB
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MD5
c44a5f5978d95c5f2267b24b29f0f512
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SHA1
c9f4fd16130ed87437faa002138d36cbbfa06aaa
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SHA256
55dd738b5ccada8533d959d0652cdd8f768cc183fa924424e310bb3d4d811a49
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SHA512
46be2766736c4d0eb3a4a7a0b847b683fbb21747e64e4a967cf0b4798f77ecac8594f98f0b6f3d29c9f0d507bb711dee9cffabff21708357ba0a9dabf035b4fa
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SSDEEP
6144:+loZM+rIkd8g+EtXHkv/iD4Zl4z8il923De8NhoVhb8e1mgi:ooZtL+EP8Zl4z8il923De8NhobO
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1249878996729200650/D6Sae4N0q4Tdhi6fxln2bXNVm1jQNdpHYtnipXyc04dBJs5Jp2LSJWfIMCi0Hs66R2-7
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 sihost.exe
Files
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sihost.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: 227KB
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