Static task
static1
Behavioral task
behavioral1
Sample
R3nzSkin.dll
Resource
win10-20240214-en
Behavioral task
behavioral2
Sample
R3nzSkin_Injector.exe
Resource
win10-20240214-en
General
-
Target
R3nzSkin.zip
-
Size
518KB
-
MD5
25dd3b106385e8c8eb0a5e9162cbcdd1
-
SHA1
90271c61466b5c846bf6f6b8b82f3b23a65416fc
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SHA256
6c93c26fa2dc83ea23c0f3728a8fb8220bdb35f7f2ca1178a8e22bd7a341535b
-
SHA512
e653c682d4b890f3e2285e620892a1b2c6330103440585be332fc256ab90d5b03525992bc452c66369217eadf12f23201bd84875955e61932f4627a7907aaae1
-
SSDEEP
12288:gn1gTdsR9D6m+3xBejt8qto32+7v7CULw3W7qTifR:y1gTC9D6nni8Eor7CUL+W7qSR
Malware Config
Signatures
-
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/R3nzSkin.dll unpack001/R3nzSkin_Injector.exe
Files
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R3nzSkin.zip.zip
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R3nzSkin.dll.dll windows:6 windows x64 arch:x64
0c45b94f9006d7dccb8adc504e48e098
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
IMAGE_FILE_DLL
Imports
kernel32
QueryPerformanceCounter
GetModuleHandleW
VirtualQuery
DisableThreadLibraryCalls
GetCurrentThread
CloseHandle
ExitProcess
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
GetFileSizeEx
GetModuleFileNameW
GetModuleHandleExW
FreeLibraryAndExitThread
LocalFree
FormatMessageA
GetLocaleInfoEx
CreateDirectoryW
CreateFileW
FindClose
FindFirstFileW
FindFirstFileExW
FindNextFileW
GetFileAttributesExW
SetEndOfFile
SetFilePointerEx
AreFileApisANSI
GetLastError
GetFileInformationByHandleEx
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
TryEnterCriticalSection
DeleteCriticalSection
GetCurrentThreadId
WaitForSingleObjectEx
Sleep
InitOnceComplete
InitOnceBeginInitialize
EncodePointer
DecodePointer
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
GetSystemTimeAsFileTime
LCMapStringEx
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
ReadFile
CreateThread
ExitThread
RtlUnwind
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: 557KB - Virtual size: 557KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 146KB - Virtual size: 146KB
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:6 windows x64 arch:x64
2c3ed07dfb34c79124a4487410d8e0bd
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
?_Gnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBA_JXZ
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_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?$char_traits@D@std@@@std@@IEAAPEADXZ
?gptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBAPEADXZ
?_Pnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEBA_JXZ
?pbump@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXH@Z
_Strcoll
_Strxfrm
?_Throw_C_error@std@@YAXH@Z
?_Throw_Cpp_error@std@@YAXH@Z
_Thrd_detach
_Cnd_do_broadcast_at_thread_exit
?id@?$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
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?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
api-ms-win-crt-heap-l1-1-0
realloc
malloc
free
_callnewh
api-ms-win-crt-runtime-l1-1-0
_cexit
terminate
_beginthreadex
abort
_invalid_parameter_noinfo_noreturn
vcruntime140
__current_exception_context
__current_exception
_CxxThrowException
__std_exception_destroy
__std_exception_copy
memcpy
__FrameUnwindFilter
__CxxUnregisterExceptionObject
__CxxDetectRethrow
__CxxRegisterExceptionObject
__CxxExceptionFilter
__CxxQueryExceptionSize
strchr
memmove
kernel32
Sleep
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
WideCharToMultiByte
advapi32
LookupPrivilegeValueW
OpenProcessToken
AdjustTokenPrivileges
api-ms-win-crt-stdio-l1-1-0
fgetc
_get_stream_buffer_pointers
fwrite
fclose
fflush
setvbuf
fsetpos
fgetpos
fread
_fseeki64
ungetc
fputc
api-ms-win-crt-filesystem-l1-1-0
_lock_file
_unlock_file
api-ms-win-crt-time-l1-1-0
_time64
api-ms-win-crt-utility-l1-1-0
srand
mscoree
_CorExeMain
Sections
.text Size: 94KB - Virtual size: 93KB
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: 175KB - Virtual size: 175KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 7KB
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: 300B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ