Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240220-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
ec8787725819a1eaa6c2acda5cde4e0c
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SHA1
011cbaffb9a292b13be1fcfcac3e8aea5a680005
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SHA256
490d63d3581ea7e8c895731ece8885d4059918829937c709e330f57375a309bd
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SHA512
df2811f75d40ec7c554ecc3763764c07a343503b18a65794efa00f17c358169048eeb0f52341eeff06a5342c10b464ea31958afef903bf16bb7d39149e54685c
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SSDEEP
6144:lloZM+rIkd8g+EtXHkv/iD4R7vh0ad1+O7mEl5QG8b8e1ms4i:noZtL+EP8R7vh0ad1+O7mEl5QL/B
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1213712949131350096/vcRAQ-GKAS5FXcRnJVfZKudUen8Q_vlTWuDOWJ4E1IADPdRnROlArAW_T48sfxiupSCK
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