Behavioral task
behavioral1
Sample
bootstrapper (1).exe
Resource
win7-20240903-en
General
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Target
bootstrapper (1).exe
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Size
328KB
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MD5
0cf5a2a6a93219472f252664fa75255e
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SHA1
38f94656d8c9be377161306d1b9ab5feb41f27ff
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SHA256
fd39268f5d2b701b75d72ee97b20c325b72af61aa69b9638e04ac2816927c483
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SHA512
6ab0c66dc057f557b33749ff493b579e284feda4541ca576fdf96ae5c8ea2611141abdc82bb8d423504c00dd5c3648209347d549511e889a66efc6af398c8911
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SSDEEP
6144:SloZM+rIkd8g+EtXHkv/iD4CSn6HdmOhZU9va6v8Rb8e1mZi4c:8oZtL+EP8CSn6HdmOhZU9va6vs7
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1332453011020316692/evoCySmiNHwFiMzYh7PSe1VOAM8PVS_xAqSiu3shFFnfvWmWCad9ivXhS6KHnQW06-0O
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 bootstrapper (1).exe
Files
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bootstrapper (1).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: 99KB - Virtual size: 98KB
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