Behavioral task
behavioral1
Sample
Blood EXTERNAL.exe
Resource
win10-20231020-en
General
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Target
Blood EXTERNAL.exe
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Size
256KB
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MD5
a4379fc86adc58efb212f662f3d6b8cc
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SHA1
5bf25771ff9006b0cfb6ad820503eedc054362e6
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SHA256
bdc7f2fa2abd884838f90a2a44af32c48f7e87d38ed4d887c80bc2f0d4e02930
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SHA512
3434272593c73e2ea9b3110e1e54b3ceae20634796dbbc0c1191a2983031171227b968d464de9e106c148e410ecf97ac854d45c741dad00cc76b7d1977a16df1
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SSDEEP
6144:oloZM+rIkd8g+EtXHkv/iD4FhHb1DA0r5SjVg8Zg+tB48e1m+ifX:2oZtL+EP8vHb1DA0r5SjVg8ZlAkf
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1178090943421894717/oiTjFNJzJlZPKQv45vEBY3HwoUJtrV26L9ZwuwlL54qr4SW6mH1ZeHMPKBtP_7sAxEen
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 Blood EXTERNAL.exe
Files
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Blood EXTERNAL.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: 28KB - Virtual size: 28KB
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