Static task
static1
Behavioral task
behavioral1
Sample
Okuru.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
Okuru.exe
Resource
win10v2004-20230915-en
General
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Target
Okuru.exe
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Size
2.9MB
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MD5
b02e000fe67bea9a36118811e9afbf9b
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SHA1
f25e951343c39a24348efa689728617a43cc9310
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SHA256
6f437c694463d856376d7f5a6b5e83fcf76215044c6b157a2931f4693f7071ec
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SHA512
19c64fced25514041560c24e2d5f69fc467faf891bf2fbe6145ef6bca49fe139c23726fb0d788931bfcd1c31c56efd7f40e8b43062b6f917323efc028aa29acb
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SSDEEP
3072:Be8lTxrU1GUGNxmRiSYT0zHCqn6Y/TEA7hvewogiutF/sD28t6iNBIFT:Ber1sbT0zHCqVB4+R
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Okuru.exe
Files
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Okuru.exe.exe windows:4 windows 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: 492KB - Virtual size: 492KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 10KB - Virtual size: 9KB
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