General
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Target
Umbral.exe
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Size
229KB
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MD5
f2b455f6e472b641d1ccc3f9c01cf429
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SHA1
e31c726c4d8a5a786940cb513eb90a07f2a81ca8
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SHA256
e899e164d7941ef537bd9e1b6ec3cce4853836cc0893df4ab18e291bba93099a
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SHA512
460b49463f834562d5ecf567a992c2ff7c282eeb9d9524a2db809143561c35b6cf8a86fc474e15c6366196a5111656536bcb97c57b7a2d1320427b467cf66c52
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SSDEEP
6144:FloZMKrIkd8g+EtXHkv/iD4BtDSdLocDxabtIExCgb8e1mk2i:HoZJL+EP8BtDSdLocDxabtIExLX7
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1292124140064608337/kC3TU34BcNXonIUE9I3g7boAXRaXWicDnCBjx6ez4OuvYOZAYUVkQfISJI8n5-ZpJnpL
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