Static task
static1
Behavioral task
behavioral1
Sample
Ynstr.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
Ynstr.exe
Resource
win10v2004-20231215-en
General
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Target
85110KA1961PLC001433.img
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Size
768KB
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MD5
44b5da05d2f080d09ec17359f60dacd6
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SHA1
f1e1e3c2caf7b233a98b6a2c0ac3eabb96f2081b
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SHA256
4fcbdbe09122e5dc33f831e7e65c39cab03b67e70e4d8f5d3c225a8c88c7fb7d
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SHA512
e5ce1cced3a9c4ae5c974e21e868d75d0296982cbd188d374f7a3df6ffe270ede0d5cd33e0529b1ecac41139ad82521b376c0983a9f1be3978d8f2c7188baa0a
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SSDEEP
12288:xCcj8EhT1GrAjbadQSIVCXfUWQBZoeAfeDlV25x3nGxYcBa8k:ocj8EzCdQSIkXsWQE4lV259Gx
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack002/Ynstr.exe
Files
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85110KA1961PLC001433.img.iso
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out.iso.iso
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Ynstr.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_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 715KB - Virtual size: 715KB
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