Static task
static1
Behavioral task
behavioral1
Sample
R3nzSkin.zip
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
R3nzSkin.zip
Resource
win10v2004-20230220-en
Behavioral task
behavioral3
Sample
R3nzSkin.dll
Resource
win7-20230220-en
Behavioral task
behavioral4
Sample
R3nzSkin.dll
Resource
win10v2004-20230221-en
Behavioral task
behavioral5
Sample
R3nzSkin_Injector.exe
Resource
win7-20230220-en
Behavioral task
behavioral6
Sample
R3nzSkin_Injector.exe
Resource
win10v2004-20230220-en
General
-
Target
R3nzSkin.zip
-
Size
465KB
-
MD5
46a920520e9486dfc2677d6eb7ca8bc8
-
SHA1
1b5dada8e3218ba5173e6f9041e4cb12ac2820be
-
SHA256
432f04800f3a321bbe3351083021af341c962aed35ef333a67c9b255f9644a8f
-
SHA512
9dd64f5e88399e11c1c21360f194e6039462776b5f61c7d0a030945f761b09adfec86b6dce221025bc8c32bf93fe3b2711bba720b924275474151802fe67efaa
-
SSDEEP
12288:2ODQuwNeTu+0EjZpIaSrn876IEeQVj0xbeM2L/Pmzoy:2O+QiPEddQa640jQbsL/Oz1
Malware Config
Signatures
-
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/R3nzSkin.dll unpack001/R3nzSkin_Injector.exe
Files
-
R3nzSkin.zip.zip
-
R3nzSkin.dll.dll windows x64
b4083963033d151ef5752bb4495c201d
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
WriteFile
QueryPerformanceFrequency
GlobalUnlock
FlushFileBuffers
GetFileType
GetStdHandle
SetFilePointerEx
WideCharToMultiByte
GlobalLock
GlobalAlloc
GlobalFree
IsValidCodePage
MultiByteToWideChar
GetFileSizeEx
GetModuleFileNameW
GetModuleHandleExW
LocalFree
FormatMessageA
GetLocaleInfoEx
CreateDirectoryW
CreateFileW
FindClose
FindFirstFileW
FindFirstFileExW
FindNextFileW
GetFileAttributesExW
AreFileApisANSI
GetLastError
GetFileInformationByHandleEx
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
TryAcquireSRWLockExclusive
GetCurrentThreadId
WaitForSingleObjectEx
Sleep
InitOnceComplete
InitOnceBeginInitialize
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection
EncodePointer
DecodePointer
LCMapStringEx
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
GetSystemTimeAsFileTime
GetStringTypeW
GetCPInfo
InitializeCriticalSectionAndSpinCount
SetEvent
ResetEvent
CreateEventW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
GetCurrentProcessId
InitializeSListHead
GetCurrentProcess
TerminateProcess
RtlUnwindEx
RtlPcToFileHeader
RaiseException
InterlockedFlushSList
SetLastError
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
RtlUnwind
ReadFile
CreateThread
ExitThread
FreeLibraryAndExitThread
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: 543KB - Virtual size: 543KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 138KB - Virtual size: 138KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 16KB
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
-
R3nzSkin_Injector.exe.exe windows x64
90bfa65d6931d3af6d3859b4ee33483a
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
?_Gninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?in@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?_Pninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?epptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?_Gnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBA_JXZ
?gbump@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXH@Z
?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
?_Throw_C_error@std@@YAXH@Z
?_Throw_Cpp_error@std@@YAXH@Z
_Thrd_detach
?egptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
_Cnd_do_broadcast_at_thread_exit
?gptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Gndec@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?_Xlength_error@std@@YAXPEBD@Z
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
?eback@?$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?$char_traits@D@std@@@std@@UEAA@XZ
?_Xout_of_range@std@@YAXPEBD@Z
_Xtime_get_ticks
_Query_perf_frequency
_Query_perf_counter
?always_noconv@codecvt_base@std@@QEBA_NXZ
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
??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@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
??1_Lockit@std@@QEAA@XZ
?_Fiopen@std@@YAPEAU_iobuf@@PEB_WHH@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
_Thrd_sleep
??0?$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?$char_traits@D@std@@@std@@QEAAXH_N@Z
?pptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
api-ms-win-crt-heap-l1-1-0
malloc
free
_callnewh
api-ms-win-crt-runtime-l1-1-0
terminate
_invalid_parameter_noinfo_noreturn
_cexit
_beginthreadex
abort
vcruntime140
__current_exception_context
__current_exception
_CxxThrowException
__std_exception_destroy
__std_exception_copy
memcpy
__FrameUnwindFilter
__CxxUnregisterExceptionObject
__CxxDetectRethrow
__CxxRegisterExceptionObject
__CxxExceptionFilter
__CxxQueryExceptionSize
memmove
kernel32
GetCurrentProcessId
QueryPerformanceCounter
Sleep
GetSystemTimeAsFileTime
GetCurrentThreadId
advapi32
LookupPrivilegeValueW
OpenProcessToken
AdjustTokenPrivileges
api-ms-win-crt-stdio-l1-1-0
fgetc
fflush
_get_stream_buffer_pointers
fwrite
setvbuf
fclose
fsetpos
fgetpos
_fseeki64
fread
ungetc
fputc
api-ms-win-crt-utility-l1-1-0
srand
rand
api-ms-win-crt-filesystem-l1-1-0
_unlock_file
_lock_file
rename
api-ms-win-crt-time-l1-1-0
_time64
mscoree
_CorExeMain
Sections
.text Size: 35KB - Virtual size: 34KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.nep Size: 512B - Virtual size: 400B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 94KB - Virtual size: 94KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 512B - Virtual size: 120B
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: 148B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ