Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win10v2004-20240802-en
General
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Target
Umbral.exe
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Size
232KB
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MD5
c06d5c52b73ea9b584856d085b5e602a
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SHA1
11d87e26def16f81e25be667b92ae0a1f18b4f53
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SHA256
183ef3c129d5ae9cc4070d9f1c2f276fe2ee4f72b9a1498c7f88d808e9f65a92
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SHA512
0aa2513e17baae624c66a9284ad440f7112d80f5b3fff59a4285876b61ae7512ae6ce226d2a89c77506a19810813db7d18b912394f7c323b57fdcc13ac8d6a76
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SSDEEP
6144:RloZMArIkd8g+EtXHkv/iD4K6k+1ZHMgPfu35EwF1zb8e1mKFo6i:joZHL+EP8K6k+1ZHMgPfu35EwF9pFK
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1279568429354844182/gSnzh1xY7wMGz_YPr9a4ZZj2EtDdemR6YarKMztp7mGHc1jyKMJVL68a_kJvpSVi8rKV
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
Password: 1
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: 229KB - Virtual size: 229KB
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