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Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20230712-en
General
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Target
Umbral.exe
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Size
228KB
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MD5
18035d182c38cd4bdac10b181d956b32
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SHA1
7a024ccc6625b4c232064cff47dc52b3d3efe4fe
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SHA256
e15b1ff3eb180023710277f71246a22b705ff26a4826789a004b77137df5d30d
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SHA512
9cd6c414a15ae3cf89756f081e464c5e8ecf2951dd546a7930d88d31abb48ce37ba263ad18d0c3cdb74090ce0f85847d6747c183b61274c43f9f9f445a077566
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SSDEEP
6144:kloZMIrIkd8g+EtXHkv/iD4LQ1DjpaC9uop7mGzuib8e1mBi:CoZnL+EP8LQ1DjpaC9uop7mGzhj
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1142980339636109362/qohfOqTYDAaC8YtKuRZ1oufQY7vSb5mvD9vCE3GyKk9lZ6xiwNkGQ4RhSWS4Dr6Vqn1u
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 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: 225KB - Virtual size: 225KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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