Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240508-en
General
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Target
Umbral.exe
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Size
231KB
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MD5
c6d9062fe7fa14a33531fab3d8d53e04
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SHA1
9324cc22d65cfaaa4b4b35c978db9e5039d36c2b
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SHA256
4df5b468a1be632ec9814e7060ab85d055c75dd913b48c24a978d7357f377449
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SHA512
ed30c2a44431900279dc0ecf6325971bcb22149b3143c0c1ca4b5b0ea3f3a5ce85617b8c317b93bdfdfff4afd349330242c68578d8755f31ef48663efe41849d
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SSDEEP
6144:xloZM+rIkd8g+EtXHkv/iD4Ooph/1+mpesl3ySX4MvHb8e1mv4li:DoZtL+EP8Ooph/1+mpesl3ySXpJs
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1250871807377150003/vDfoky312VEUxyT_q7wL7qN-yRFQMOmUyC8VxH1YlFK28GmOeTjhFEQ41AzMHOMIBt5r
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: 228KB - Virtual size: 228KB
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