Behavioral task
behavioral1
Sample
start.dll.exe
Resource
win7-20240215-en
General
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Target
start.dll.exe
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Size
232KB
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MD5
ec6f1481d7bb030213e34efe0590f54b
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SHA1
f3e453c2534a88bea7da27043a781e3eb8650e90
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SHA256
bb8117f1bf2b6af1409762f7959448c15f7cad6a3ad5c8cf484da64fe1dcafc0
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SHA512
9284b5f85a730c70c7a88a70751d1e20bce7eb7d55d98f808e8cbab83e3f36df87e344091de5b04c0738cad47569d704cf5537e1e40ad50cc73508b8bff16fc0
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SSDEEP
6144:tloZM3fsXtioRkts/cnnK6cMl3kOA4+ZRSZ3qCDjaI1/b8e1mWi:voZ1tlRk83Ml3kOA4+ZRSZ3qCDjaoc
Malware Config
Extracted
umbral
https://discordapp.com/api/webhooks/1228330512779579403/5toLS2_FpTV6Z6cML4nCtldtoZ7YWCs6aBHnNRbgdRXBePNjv7RtNfYJUtf0pkvhRqT-
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 start.dll.exe
Files
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start.dll.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