General
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Target
Umbral.exe
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Size
229KB
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MD5
fd99541be9d7e3690c02aacc9b25fb64
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SHA1
d1031c9cfde65a08f2682727dab72fd0373bbaa7
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SHA256
d9f33d5d2633fbb0038ee965a140a7a26e2f28b10aee8b3ea0e729452128d19c
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SHA512
d2a8cb3d82874475ee955831e952834b4626ed0a0931f76ee38a910295aacb39e4e6da60598df1335e840685ece7d8394e3b64272f5172ceecd78d257b944245
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SSDEEP
6144:9loZM+rIkd8g+EtXHkv/iD4DMw2KInDAPZMK7bCR9b8e1mogi:foZtL+EP8DMw2KInDAPZMK7bCnz5
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1337485250564980757/5ucioVDdLZeiOKAiVvRyQVz28mIMAAh9D8uK6EdmE-eaGxcfymXH_6ckaLJYiXpw2-oo
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: 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