Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20241010-en
General
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Target
Umbral.exe
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Size
230KB
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MD5
38b42800e087dcee9961a8e80318d6f2
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SHA1
36893cfd322a6021d8048ca6971fc094de6a9f7c
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SHA256
44a1693b64e6cb0054ab2d7188af6c9f213ba2a65cf278b6f3857ab462cf30a2
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SHA512
5c1d1065e8d076abeabe473f184e7561a2bc9b8b1486b3bff7540e736aa700a93a4879f97f70e176044089ca6eb0462725f26cdd3cb78190de62a62252cb6039
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SSDEEP
6144:uloZM+rIkd8g+EtXHkv/iD4K8Nqbw2xpapPyAxVkK6b8e1myui:4oZtL+EP83Nqbw2xpapPyAxVkdXD
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1332030375077216306/3rxK6nEeUFjjZI2c3QNixJZiCzOVXLwyTS7_l3YYFoHKSYzr318OCLnlysEyz2B3QeeN
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 Umbral.exe
Files
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Umbral.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: 227KB
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