Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20231215-en
General
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Target
Umbral.exe
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Size
232KB
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MD5
026573734d52b82132fe213163f53273
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SHA1
6a0651b69e20e3a491c1f98e07710ddbdac85868
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SHA256
336767cc7d04211aaad18b27760226ade4ce15c5787bc2e71cf66535af2f174e
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SHA512
0c9c04dc8e6245cf606b0849afb5e486f5cd145a7f0da9371aad29f2022d288c13c52fb63c6e06f3e57ec62db909e8273eb77b372817432a916cb0646261685f
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SSDEEP
6144:7loZM+rIkd8g+EtXHkv/iD4Hq14QcCFdWfj+ctBI7zb8e1mTi:ZoZtL+EP8Hq14QcCFdWfj+ctBIDR
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1204944287041847307/aoa_S28cr8V4g11xswAZC9SdvRJS8ygczDK-GfItmMFXCcL2edroJI5lraSE-OISlf6d
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: 4KB - Virtual size: 3KB
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