Behavioral task
behavioral1
Sample
BootstrapperV1.13.exe
Resource
win10-20240404-en
General
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Target
BootstrapperV1.13.exe
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Size
231KB
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MD5
282abb0f0ec32631b00061b682a1d930
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SHA1
48497f3020dbbe6d1f74654d3df0995ccbee2f16
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SHA256
78f8fb8537ad3b8545788459cb6429ebbae3bfca197b6396bf197857789cc32f
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SHA512
1a90ccba732d8d4eb6db1b79c496c536f9021cc63a5202619fb7a133b06c61e5875df62c39a532230cdd1ab81c3a9d8b14d80f430925f05eb760a66d63f76ce2
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SSDEEP
6144:RloZM+rIkd8g+EtXHkv/iD4upqVKInDAHZMK7bCD+Qb8e1mipi:joZtL+EP8upqVKInDAHZMK7bCDT5w
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1267765281216794646/lx9j6q1Dzqb93V7znVQDCxb5MQYo-P_nPkX7SZyoUosbxCFbPkNDLm9ahT6TFD_sDEWT
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 BootstrapperV1.13.exe
Files
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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: 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