General
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Target
Umbral.exe
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Size
227KB
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MD5
58738db2039e147e77cb04f0a07eaf52
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SHA1
e23c35f7e459bd78dcd7383855cd6107671100d1
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SHA256
684b9ab5768be501ebe639d24bc4e5dc4188e0a63da9d4fb9612a2fd27324285
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SHA512
779e6ab46446de1435b3b3994c7639f167533fedcc6f7a5d0d5476cb27aa5b53baba49db469125a4186b1678cc110a9502519c71477f8bf56c17a10d35706590
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SSDEEP
6144:eloZMUrIkd8g+EtXHkv/iD43T0mp3cw/EeHp0AVx2b8e1mSi:IoZrL+EP83T0mp3cw/EeHp0AVQ8
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1200183329664815124/3k8ZVgzSVQGFVR-Cd-nNVRK-r1he7Fpc_qx6fIOmyLc6soqlvi0vjOWaXTMj3yjkn2kU
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: 224KB - Virtual size: 224KB
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