General
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Target
lsass.exe
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Size
236KB
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MD5
a54864a86ce5efc3c0b0e5d1ad8d2786
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SHA1
d8d92500d2db752acd61391caaf5966948929c0e
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SHA256
c964cf610df5e9e282b306865a632871b1274254ee181656b1372a637b4acf6c
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SHA512
8808299da771578f673f371c449a3335689f746f0c7aae56d213b069add99458f0baf586d9e54cbf4c40a557bac376aef4a38dfbf3a1de25f61b1aa051edf178
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SSDEEP
6144:gSKhfS5V6zXnsjHkxL6Lae4iUuSH8e1Z6v9z:gySTn6N5I8J
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1276610201444683786/qZfVBIKkzPkpYEV2YIodb6dDqpbtEG5jZd9HJHrhvxiyRwxxMjFIgAw4JDLkv1NCWVH4
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 lsass.exe
Files
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lsass.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: 233KB - Virtual size: 233KB
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