Behavioral task
behavioral1
Sample
BootstrapperV1.13.exe
Resource
win10v2004-20240802-en
General
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Target
BootstrapperV1.13.rar
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Size
79KB
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MD5
88e52f784ad35aff3b37046d8fc152a5
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SHA1
d86313ca8a39d844f767d0f70de4bb68b8e2bb04
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SHA256
683532c9ddccd09aac6480c255099963803eac956ea1d5597c772ff13a8a7a31
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SHA512
82b9aae88dd61416e011f29d092201b0609c0e5d25126343062b548240e585ad1dcd01cbc73fbe0056becf3b060716cb56d35bba1080c441eb01e4c0b173d1c3
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SSDEEP
1536:mpcWhrJks7JCizXkmQQU6eGMgBBXv+RPk5xH9griGKmhBGXzs9Xau:qX7JCiLMBbyvY8CC40js9N
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1267765278348152842/-kPKB4JdOggRN8137Je53csdEwdD1XV1iw7mGKhIQuAM7kIz_LwCjyjE2Ekxy7ebgeJr
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule static1/unpack001/BootstrapperV1.13.exe family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/BootstrapperV1.13.exe
Files
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BootstrapperV1.13.rar.rar
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BootstrapperV1.13.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