General
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Target
BootstrapperV1.15.rar
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Size
81KB
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MD5
11d8dd93a51940b199fe355530e8f2b3
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SHA1
f8250b01341619d6d57445939bf044a5c4a4c9bb
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SHA256
3c6a90604dabc0f5e21536be31463e558eb94c57f9e3ae7edc07c47c66c157a1
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SHA512
89221beaf9ab5cddd4a4af700a9e82855de812a0a0c604d61564c64367bcb709c12779bcb9b3c7a10414fefd3f6710b72d0c976e649769818b786c14b982fcc4
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SSDEEP
1536:iPq7crT9Sq6prXMReq83QAYxt1HVEDTBgdXnXeUY95mhHhWeTYfeRyXSX7bnEfQ6:iCIMq6xXoLV7HITmdXXRwsnkSXXnEICT
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1269631276319772763/o25bvKHZdNWIKlxwZsWuchve_kJF08coX85MF90b1jtfeac64MGlyO-HPhpTLv4moYHD
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule static1/unpack001/BootstrapperV1.15.exe family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/BootstrapperV1.15.exe
Files
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BootstrapperV1.15.rar.rar
Password: 1111
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BootstrapperV1.15.exe.exe windows:4 windows x86 arch:x86
Password: 1111
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: 228KB - Virtual size: 228KB
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