Static task
static1
Behavioral task
behavioral1
Sample
R3nzSkin.zip
Resource
win10-20230703-en
Behavioral task
behavioral2
Sample
R3nzSkin.dll
Resource
win10-20230703-en
Behavioral task
behavioral3
Sample
R3nzSkin_Injector.exe
Resource
win10-20230703-en
General
-
Target
R3nzSkin.zip
-
Size
555KB
-
MD5
37bafdbb8333580de3c27604f8677d42
-
SHA1
20524cc4c7661ac74bc675b9a426bdba83bb91b1
-
SHA256
d16a062ad254edf93c4c3ad795d22f73cb88819c2e44c6f6ad82e90fa1d11694
-
SHA512
5a21908da4292443f0d7635f7a8763d9f82b2d1ac95dc2494b81bbafa2692bff9d5df78c308d4fd895771b1b7763a20ebc2d55721d559e664aacc56383028369
-
SSDEEP
12288:RsKrLb+C6B0XRt++x1WaYkkbVY2dxp+xPR2v+MK9wdEll9GPY2A+kp:RrbaB2jfWaYkkbVY2dn+xUmJwd8lgP/u
Malware Config
Signatures
-
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/R3nzSkin.dll unpack001/R3nzSkin_Injector.exe
Files
-
R3nzSkin.zip.zip
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R3nzSkin.dll.dll windows x64
0cdcd7affc9ebf44c65fc0f2c030776d
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
Imports
kernel32
QueryPerformanceCounter
GetModuleHandleW
VirtualQuery
DisableThreadLibraryCalls
GetCurrentThread
CloseHandle
ExitProcess
SetEndOfFile
WriteConsoleW
HeapSize
SetStdHandle
GetProcessHeap
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineW
GetCommandLineA
GetOEMCP
GetACP
GetProcAddress
HeapReAlloc
ReadConsoleW
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
GetLocaleInfoW
LCMapStringW
HeapAlloc
HeapFree
GetConsoleMode
GetConsoleOutputCP
QueryPerformanceFrequency
GlobalUnlock
WriteFile
FlushFileBuffers
GetFileType
GetStdHandle
WideCharToMultiByte
GlobalLock
GlobalAlloc
GlobalFree
IsValidCodePage
MultiByteToWideChar
SetFilePointerEx
GetFileSizeEx
GetModuleFileNameW
FreeLibraryAndExitThread
LocalFree
FormatMessageA
GetLocaleInfoEx
CreateDirectoryW
CreateFileW
FindClose
FindFirstFileW
FindFirstFileExW
FindNextFileW
GetFileAttributesExW
AreFileApisANSI
GetLastError
GetFileInformationByHandleEx
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
TryAcquireSRWLockExclusive
GetCurrentThreadId
WaitForSingleObjectEx
Sleep
InitOnceComplete
InitOnceBeginInitialize
GetModuleHandleExW
WakeAllConditionVariable
SleepConditionVariableSRW
IsProcessorFeaturePresent
RtlPcToFileHeader
RaiseException
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection
EncodePointer
DecodePointer
LCMapStringEx
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
InitializeConditionVariable
WakeConditionVariable
GetSystemTimeAsFileTime
GetStringTypeW
GetCPInfo
InitializeCriticalSectionAndSpinCount
SetEvent
ResetEvent
CreateEventW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
GetCurrentProcessId
InitializeSListHead
GetCurrentProcess
TerminateProcess
RtlUnwindEx
InterlockedFlushSList
SetLastError
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
RtlUnwind
ReadFile
CreateThread
ExitThread
user32
CloseClipboard
EmptyClipboard
GetClipboardData
SetClipboardData
OpenClipboard
CallWindowProcW
SetWindowLongPtrW
GetAsyncKeyState
SetWindowLongW
MessageBoxA
ScreenToClient
GetCapture
ClientToScreen
IsChild
TrackMouseEvent
GetForegroundWindow
LoadCursorW
SetCapture
SetCursor
GetClientRect
ReleaseCapture
SetCursorPos
GetCursorPos
shell32
SHGetKnownFolderPath
ole32
CoTaskMemFree
imm32
ImmSetCompositionWindow
ImmReleaseContext
ImmGetContext
d3dcompiler_47
D3DCompile
Sections
.text Size: 559KB - Virtual size: 558KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 264KB - Virtual size: 264KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 17KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 25KB - Virtual size: 25KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: 512B - Virtual size: 348B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 856B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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R3nzSkin_Injector.exe.exe windows x64
a750cab83abd5726f28f4d26e606667b
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
msvcp140
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?in@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?_Gninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?egptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?_Gndec@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z
?_Pnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBA_JXZ
?pbump@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXH@Z
_Strcoll
_Strxfrm
?_Throw_Cpp_error@std@@YAXH@Z
_Thrd_detach
_Cnd_do_broadcast_at_thread_exit
?id@?$collate@D@std@@2V0locale@2@A
?gbump@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXH@Z
?id@?$ctype@D@std@@2V0locale@2@A
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Decref@facet@locale@std@@UEAAPEAV_Facet_base@3@XZ
?_Incref@facet@locale@std@@UEAAXXZ
?_Gnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBA_JXZ
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?_Xlength_error@std@@YAXPEBD@Z
?_Init@locale@std@@CAPEAV_Locimp@12@_N@Z
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
?_Xbad_alloc@std@@YAXXZ
?eback@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?setg@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXPEAD00@Z
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXPEAPEAD0PEAH001@Z
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
?_Getcoll@_Locinfo@std@@QEBA?AU_Collvec@@XZ
?_Xregex_error@std@@YAXW4error_type@regex_constants@1@@Z
_Xtime_get_ticks
_Query_perf_frequency
_Query_perf_counter
?always_noconv@codecvt_base@std@@QEBA_NXZ
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
??0facet@locale@std@@IEAA@_K@Z
??1facet@locale@std@@MEAA@XZ
?is@?$ctype@D@std@@QEBA_NFD@Z
?tolower@?$ctype@D@std@@QEBADD@Z
??1?$basic_istream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
??0_Lockit@std@@QEAA@H@Z
??Bid@locale@std@@QEAA_KXZ
?_Getcat@?$ctype@D@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
??1_Lockit@std@@QEAA@XZ
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?_Fiopen@std@@YAPEAU_iobuf@@PEB_WHH@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
_Thrd_sleep
?c_str@?$_Yarn@D@std@@QEBAPEBDXZ
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
??0?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
??0_Locinfo@std@@QEAA@PEBD@Z
??1_Locinfo@std@@QEAA@XZ
?tolower@?$ctype@D@std@@QEBAPEBDPEADPEBD@Z
?pptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?epptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?_Pninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?out@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?gptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
api-ms-win-crt-heap-l1-1-0
_callnewh
malloc
realloc
free
api-ms-win-crt-runtime-l1-1-0
_cexit
_invalid_parameter_noinfo_noreturn
_beginthreadex
abort
terminate
vcruntime140
__current_exception_context
__current_exception
_CxxThrowException
__std_exception_destroy
__std_exception_copy
memcpy
__FrameUnwindFilter
__CxxUnregisterExceptionObject
__CxxDetectRethrow
__CxxRegisterExceptionObject
__CxxExceptionFilter
__CxxQueryExceptionSize
strchr
memmove
kernel32
Sleep
TerminateProcess
GetCurrentProcess
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
IsProcessorFeaturePresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
WideCharToMultiByte
advapi32
LookupPrivilegeValueW
OpenProcessToken
AdjustTokenPrivileges
api-ms-win-crt-stdio-l1-1-0
fsetpos
fflush
setvbuf
fgetpos
_fseeki64
fread
fgetc
ungetc
fputc
fclose
fwrite
_get_stream_buffer_pointers
api-ms-win-crt-filesystem-l1-1-0
_unlock_file
_lock_file
api-ms-win-crt-time-l1-1-0
_time64
api-ms-win-crt-utility-l1-1-0
srand
mscoree
_CorExeMain
Sections
.text Size: 73KB - Virtual size: 73KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.nep Size: 1024B - Virtual size: 656B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 164KB - Virtual size: 164KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 512B - Virtual size: 168B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 23KB - Virtual size: 23KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 304B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ