Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240708-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
6e1ac269ea812669f7007ab3b279ff46
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SHA1
03ca8457e3ed82c50db62dddbe85e45118015704
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SHA256
d263275c72e75ae20efea5fd0f635335d7591ed2094c391f8b0747316a4182f4
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SHA512
925cc2227ad7840796371d387fe9252f3cdfc546aae45afbba07247440031c5154b687ea5c187705d279f47bece0b3aa41c6dffd5cdf52bbe90aacb9f13ac1a9
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SSDEEP
6144:9loZM+rIkd8g+EtXHkv/iD45xsWGsyVtGhTOMdRYTQb8e1mwi:foZtL+EP8TsWGsyVtGhTOMdRYs6
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1260651455786909778/-dPGeIcuHm3YkrMzqWQLZLA3EyEKrOIkTCKadCZMb0-Ls17KfNRsMG5MKoo7u8MNuPrI
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