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
2509db9a461b6619dd1e980090e1c8c0
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SHA1
08c538c781995dc687f454569cea1ed9c3005aed
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SHA256
246922e545aaf7556adf2f7d59771ac73423f7e334c06cac93f5dea27a24f3a2
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SHA512
b5b270221fc52b7803a915439482fed97a1c0faa8a7005f10a4d1bdb6e8b8e6726592f18adec8335914848711d02183d88be0a98693b84339c3c7968be07d201
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SSDEEP
6144:1loZM+rIkd8g+EtXHkv/iD4xQYsJ8e1mYi:XoZtL+EP8xco
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1342664527870824479/SnOAsYJqkmf4LrU15gBMfUNV8ydNA6Tv8ZP8OCg1Z6eOtXnSDmw3hpwaPKhrI3Ms10kr
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: 228KB - 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