Behavioral task
behavioral1
Sample
BootstrapperV1.11.exe
Resource
win7-20240704-en
General
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Target
BootstrapperV1.11.exe
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Size
229KB
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MD5
224b37147484176752b12af33b9efd96
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SHA1
d2fbb87ff49e0e80e8585b449fac349688d02f23
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SHA256
2133a2c5f4a04d8ffe1ea436d035917ad16c50fa011b021c95c71f2660e67033
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SHA512
e374e69dad1b3ad39887163e6c8cd07a88e36b167b91b0eeb8a5296f7345ea4c97e6e8e009193b321524f5326118900933e4657b0177b702036525d42c508704
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SSDEEP
6144:9loZM+rIkd8g+EtXHkv/iD4lePZsyVtG/TOMdRYz7b8e1m4i:foZtL+EP8lePZsyVtG/TOMdRYDu
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 sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource BootstrapperV1.11.exe
Files
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BootstrapperV1.11.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