Behavioral task
behavioral1
Sample
sinfulsassist.exe
Resource
win7-20231215-en
General
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Target
sinfulsassist.exe
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Size
232KB
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MD5
6bd66ae3d6ad55de0d3bfd026ab642f8
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SHA1
b9c03630edcb053a0f14970ea7085a8a2a285d8a
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SHA256
80e1636664daed3c4c919584a40b1404807ff859fcb98267abdbe487c9a16c1f
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SHA512
c776fe3939329bfd47c447d069f89976acedb90853ab3d16386afab6123c7f1dfd9aadbbefa458226c4065452fdfd6d5dfc0a8162950d65818d7039ab92513fa
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SSDEEP
6144:tloZMArIkd8g+EtXHkv/iD4xR8KfVealwgRj++71Nb8e1mRi:voZHL+EP8xR8KfVealwgRj++7X3
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1209300482791571506/jtacisBH4RYssA6FXpFMLRZUsTlqXPQd2aCkNsLdrWFR1ebSB4aNFfCmGPwZyjCk-eaH
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 sinfulsassist.exe
Files
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sinfulsassist.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