Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
Umbral.exe
Resource
win10v2004-20240419-en
General
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Target
Umbral.exe
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Size
232KB
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MD5
afbe250f9d941daf1fc895e29d0b2821
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SHA1
9aeaa55efa56702a0c2694ff2de3a5c6df7b03ac
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SHA256
628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6
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SHA512
177ddc51032af306d32c0826efddfa3be5e68621b440be764fba7ad37fd982fb58d7e902e4eb258fe50bbd236f82457e45e7d12a885c78314b304e72fb0f2c94
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SSDEEP
6144:tloZMDXU9Zx0kt8X0/PSCsMpwpf3tW+x5R0STTKN0b8e1mKISi:voZnf0kkPQwpf3tW+x5R0STTKm2
Malware Config
Extracted
umbral
https://canary.discord.com/api/webhooks/1236998752988823573/NsiSmSiQW8IAMjpG8SIg_6Zkfz_FbtFHloBWpL6PbxmkMA2TAyh0tCrgXWEmC3ZyASfA
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: 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