General
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Target
Umbral.exe
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Size
227KB
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MD5
79ad93ed49ecead23248ec08cc51ecfd
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SHA1
06340a50ce4fa06499e37070bbd70d6a0f25786f
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SHA256
72f47523343d7d1ddc198998a6a411686dbfcc5a608314ba400957e369e24ff8
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SHA512
083fff8df6f2d015cc46a05af331d8eb1dd1b91add76a3b47b818a594bc57a80d167cc6fdb2360de489c52b97e8d042abb207e0133d1a446850504c17ab5ffd7
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SSDEEP
6144:eloZM9rIkd8g+EtXHkv/iD4n8jjSQPL4yBECDjazBb8e1mCi:IoZOL+EP8n8jjSQPL4yBECDjaNQ
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1265405021693022301/FILQ0GK0aihutQemB89HsJoduzamtkL5_TFo8EF1W0scjL3mAwd5vIs0TCQX-f6fk3pi
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