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Behavioral task
behavioral1
Sample
Entropy.zip
Resource
win10-20230703-en
Behavioral task
behavioral2
Sample
READ ME.txt
Resource
win10-20230703-en
General
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Target
Entropy.zip
-
Size
16.7MB
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MD5
a2c7c3be4c9132bd20a57557a23e4bca
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SHA1
aa21fe0fd8dbd9e97eb6395cfd7bff4996060a15
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SHA256
2772fdf9c05c2de5c5677db014f1d5a2811f725305abfa1cf1432bed599563f6
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SHA512
e614a3e396b1c3fe3188411a997664a7d8af46f12dec6a6206c728a1bae39c15a1982ae0c5a5127f09abe5f80e690d75b398a6cb151313172dfb95575ce5b72d
-
SSDEEP
393216:HRFKOniM0iPwroLJGf+Pz4mpQzrEXKqm7erjFNWJ40:HnKOniMpor4c+P8m2zI6qtDA
Malware Config
Signatures
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resource yara_rule static1/unpack001/Entropy.dll themida -
Unsigned PE 3 IoCs
Checks for missing Authenticode signature.
resource unpack001/Entropy Patcher.exe unpack001/Entropy.dll unpack001/EntropyV3.exe
Files
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Entropy.zip.zip
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Entropy Patcher.exe.exe windows x64
f7a4012d250c70305954f058295fdfd5
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
WriteProcessMemory
ResumeThread
GetModuleHandleA
CloseHandle
GetProcAddress
VirtualAllocEx
CreateRemoteThread
CreateProcessA
IsDebuggerPresent
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
GetModuleHandleW
user32
MessageBoxW
vcruntime140
memset
__C_specific_handler
__current_exception_context
__current_exception
api-ms-win-crt-runtime-l1-1-0
_crt_atexit
_register_onexit_function
terminate
_initialize_onexit_table
_initterm_e
_initterm
_c_exit
_get_initial_narrow_environment
_initialize_narrow_environment
_configure_narrow_argv
_cexit
_set_app_type
_seh_filter_exe
__p___argv
__p___argc
_exit
exit
_register_thread_local_exe_atexit_callback
api-ms-win-crt-math-l1-1-0
__setusermatherr
api-ms-win-crt-stdio-l1-1-0
_set_fmode
__p__commode
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
api-ms-win-crt-heap-l1-1-0
_set_new_mode
Sections
.text Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 512B - Virtual size: 384B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 488B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 44B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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Entropy.dll.dll windows x64
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Sections
Size: 123KB - Virtual size: 261KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
Size: 289KB - Virtual size: 431KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Size: 17KB - Virtual size: 74KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Size: 6KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.idata Size: 1024B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.themida Size: - Virtual size: 7.4MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.boot Size: 5.1MB - Virtual size: 5.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
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EntropyV3.exe.exe windows x64
fd6430271f2f16986c253db21eeced18
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
winmm
PlaySoundA
crypt32
CertOpenStore
kernel32
GetVersionExW
GetSystemTimeAsFileTime
LocalAlloc
LocalFree
GetModuleFileNameW
GetProcessAffinityMask
SetProcessAffinityMask
SetThreadAffinityMask
Sleep
ExitProcess
FreeLibrary
LoadLibraryA
GetModuleHandleA
GetProcAddress
user32
GetDesktopWindow
GetUserObjectInformationW
GetProcessWindowStation
GetUserObjectInformationW
advapi32
CryptEncrypt
shell32
ShellExecuteA
ntdll
NtRaiseHardError
normaliz
IdnToAscii
wldap32
ord217
ws2_32
bind
wtsapi32
WTSSendMessageW
Exports
Exports
Sections
.text Size: - Virtual size: 797KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: - Virtual size: 223KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: - Virtual size: 2.0MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: - Virtual size: 39KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: - Virtual size: 148B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.seg0 Size: - Virtual size: 5.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.seg1 Size: 8.0MB - Virtual size: 8.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 737B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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READ ME.txt