RioInstaller[.]zip

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General

Target

RioInstaller.zip
Size

405KB
MD5

86e3f72120e443d6b570973a7dba92b5
SHA1

2ce45ebb49509d0f87f0174a8c590eda720d1367
SHA256

85435d6d6d6739b43b155033bdc76bb634f8e67868de7b590fffdb5aa808d76b
SHA512

954ed231799fd1dac8b7f90c1d5db11292381dd989b0f29706686a0eb233337eaafd51fb5e6076ef0ea87c1038db47569c377bf6dc3998595008b513dac3597e
SSDEEP

12288:jAj8GJRHtpHCX1heuH9LEXJu3QlePwfkXo7TFYGAsL:jAhRjHOPH98fkWFYNsL

Score

3^/10

Malware Config

Signatures

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

resource
unpack001/RioInstaller.exe
unpack001/dlls/RioInstaller.dll

Files

RioInstaller.zip
.zip
RioInstaller.exe
.exe windows:6 windows x64 arch:x64

6a91eb82bfd19d2706c7d43c46f7064e

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

D:\a\_work\1\s\artifacts\obj\win-x64.Release\corehost\apphost\standalone\apphost.pdb

Imports

kernel32

FreeLibrary
LoadLibraryExW
OutputDebugStringW
FindFirstFileExW
EnterCriticalSection
GetFullPathNameW
FindNextFileW
GetCurrentProcess
GetModuleHandleExW
GetModuleFileNameW
LeaveCriticalSection
GetEnvironmentVariableW
GetModuleHandleW
MultiByteToWideChar
GetFileAttributesExW
LoadLibraryA
DeleteCriticalSection
WideCharToMultiByte
IsWow64Process
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InitializeCriticalSectionAndSpinCount
GetProcAddress
GetWindowsDirectoryW
FindResourceW
GetLastError
ActivateActCtx
FindClose
CreateActCtxW
SetLastError
RaiseException
RtlPcToFileHeader
RtlUnwindEx
InitializeSListHead
GetCurrentProcessId
IsDebuggerPresent
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
GetStringTypeW
SwitchToThread
GetCurrentThreadId
InitializeCriticalSectionEx
EncodePointer
DecodePointer
LCMapStringEx
QueryPerformanceCounter
GetSystemTimeAsFileTime

user32

MessageBoxW

shell32

ShellExecuteW

advapi32

RegOpenKeyExW
RegGetValueW
DeregisterEventSource
RegisterEventSourceW
ReportEventW
RegCloseKey

api-ms-win-crt-runtime-l1-1-0

_invalid_parameter_noinfo_noreturn
_exit
exit
_initterm_e
_initterm
_get_initial_wide_environment
_initialize_wide_environment
_configure_wide_argv
_set_app_type
_seh_filter_exe
_cexit
_crt_atexit
_register_onexit_function
_initialize_onexit_table
_errno
abort
__p___wargv
_c_exit
_register_thread_local_exe_atexit_callback
terminate
__p___argc

api-ms-win-crt-stdio-l1-1-0

__acrt_iob_func
fputwc
__p__commode
_set_fmode
fputws
_wfsopen
fflush
__stdio_common_vfwprintf
__stdio_common_vsnwprintf_s
__stdio_common_vswprintf
setvbuf

api-ms-win-crt-heap-l1-1-0

calloc
_set_new_mode
free
_callnewh
malloc

api-ms-win-crt-string-l1-1-0

toupper
_wcsdup
wcsncmp
wcsnlen
strcpy_s

api-ms-win-crt-convert-l1-1-0

wcstoul
_wtoi

api-ms-win-crt-time-l1-1-0

_gmtime64_s
_time64
wcsftime

api-ms-win-crt-locale-l1-1-0

setlocale
___mb_cur_max_func
_configthreadlocale
___lc_codepage_func
___lc_locale_name_func
__pctype_func
_lock_locales
_unlock_locales

api-ms-win-crt-math-l1-1-0

__setusermatherr

Sections

.text
Size: 90KB - Virtual size: 90KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 37KB - Virtual size: 37KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 792B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
dlls/RioInstaller.dll
.exe windows:4 windows x86 arch: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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

RioInstaller.pdb

Imports

mscoree

_CorExeMain

Sections

.text
Size: 292KB - Virtual size: 291KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

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
dlls/System.CodeDom.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:7c:c9:f6:bc:ed:07:59:ae:08:00:00:00:00:03:7c
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

11/05/2023, 19:03

Not After

08/05/2024, 19:03

Subject

CN=.NET,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

bd:a3:9a:1f:6d:f3:90:61:6f:40:e2:3f:8c:bd:ea:1a:06:2c:1f:e4:3f:20:36:4a:dd:8b:60:d2:11:ff:26:5c
Signer

Actual PE Digest

bd:a3:9a:1f:6d:f3:90:61:6f:40:e2:3f:8c:bd:ea:1a:06:2c:1f:e4:3f:20:36:4a:dd:8b:60:d2:11:ff:26:5c

Digest Algorithm

sha256

PE Digest Matches

true

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_DLL

PDB Paths

/_/artifacts/obj/System.CodeDom/Release/net8.0/System.CodeDom.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 166KB - Virtual size: 166KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 2KB - Virtual size: 1KB

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
dlls/System.Management.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:7c:c9:f6:bc:ed:07:59:ae:08:00:00:00:00:03:7c
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

11/05/2023, 19:03

Not After

08/05/2024, 19:03

Subject

CN=.NET,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

b8:96:b4:54:f5:5f:55:38:b2:6f:02:28:c9:f8:a9:f7:3d:7e:2b:9c:c0:7d:8c:3d:6f:f0:8e:5d:e5:99:31:ed
Signer

Actual PE Digest

b8:96:b4:54:f5:5f:55:38:b2:6f:02:28:c9:f8:a9:f7:3d:7e:2b:9c:c0:7d:8c:3d:6f:f0:8e:5d:e5:99:31:ed

Digest Algorithm

sha256

PE Digest Matches

true

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_DLL

PDB Paths

/_/artifacts/obj/System.Management/Release/net8.0/System.Management.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 58KB - Virtual size: 57KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 2KB - Virtual size: 1KB

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
runtimes/RioInstaller.deps.json
runtimes/RioInstaller.runtimeconfig.json
runtimes/win/lib/net8.0/System.Management.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:7b:a1:0a:3e:cb:66:e9:01:c0:00:00:00:00:03:7b
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

11/05/2023, 19:03

Not After

08/05/2024, 19:03

Subject

CN=.NET,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

49:77:8d:dc:15:13:5f:8d:f7:74:af:cd:a0:90:66:08:03:f3:bf:ee:4b:1b:24:2b:69:b4:8c:4e:9f:11:64:aa
Signer

Actual PE Digest

49:77:8d:dc:15:13:5f:8d:f7:74:af:cd:a0:90:66:08:03:f3:bf:ee:4b:1b:24:2b:69:b4:8c:4e:9f:11:64:aa

Digest Algorithm

sha256

PE Digest Matches

true

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_DLL

PDB Paths

/_/artifacts/obj/System.Management/Release/net8.0-windows/System.Management.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 291KB - Virtual size: 291KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 2KB - Virtual size: 1KB

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

Sharing

General

Malware Config

Signatures

Files

6a91eb82bfd19d2706c7d43c46f7064e

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

shell32

advapi32

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-time-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-math-l1-1-0

Sections

.text Size: 90KB - Virtual size: 90KB

.rdata Size: 37KB - Virtual size: 37KB

.data Size: 2KB - Virtual size: 6KB

.pdata Size: 5KB - Virtual size: 4KB

_RDATA Size: 512B - Virtual size: 500B

.reloc Size: 1024B - Virtual size: 792B

.rsrc Size: 1KB - Virtual size: 1KB

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 292KB - Virtual size: 291KB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:7c:c9:f6:bc:ed:07:59:ae:08:00:00:00:00:03:7cCertificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

bd:a3:9a:1f:6d:f3:90:61:6f:40:e2:3f:8c:bd:ea:1a:06:2c:1f:e4:3f:20:36:4a:dd:8b:60:d2:11:ff:26:5cSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 166KB - Virtual size: 166KB

.rsrc Size: 2KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:7c:c9:f6:bc:ed:07:59:ae:08:00:00:00:00:03:7cCertificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

b8:96:b4:54:f5:5f:55:38:b2:6f:02:28:c9:f8:a9:f7:3d:7e:2b:9c:c0:7d:8c:3d:6f:f0:8e:5d:e5:99:31:edSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 58KB - Virtual size: 57KB

.rsrc Size: 2KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Code Sign

33:00:00:03:7b:a1:0a:3e:cb:66:e9:01:c0:00:00:00:00:03:7bCertificate

Extended Key Usages

.text
Size: 90KB - Virtual size: 90KB

.rdata
Size: 37KB - Virtual size: 37KB

.data
Size: 2KB - Virtual size: 6KB

.pdata
Size: 5KB - Virtual size: 4KB

_RDATA
Size: 512B - Virtual size: 500B

.reloc
Size: 1024B - Virtual size: 792B

.rsrc
Size: 1KB - Virtual size: 1KB

.text
Size: 292KB - Virtual size: 291KB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B

33:00:00:03:7c:c9:f6:bc:ed:07:59:ae:08:00:00:00:00:03:7c
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

bd:a3:9a:1f:6d:f3:90:61:6f:40:e2:3f:8c:bd:ea:1a:06:2c:1f:e4:3f:20:36:4a:dd:8b:60:d2:11:ff:26:5c
Signer

.text
Size: 166KB - Virtual size: 166KB

.rsrc
Size: 2KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B

33:00:00:03:7c:c9:f6:bc:ed:07:59:ae:08:00:00:00:00:03:7c
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

b8:96:b4:54:f5:5f:55:38:b2:6f:02:28:c9:f8:a9:f7:3d:7e:2b:9c:c0:7d:8c:3d:6f:f0:8e:5d:e5:99:31:ed
Signer

.text
Size: 58KB - Virtual size: 57KB

.rsrc
Size: 2KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B

33:00:00:03:7b:a1:0a:3e:cb:66:e9:01:c0:00:00:00:00:03:7b
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

49:77:8d:dc:15:13:5f:8d:f7:74:af:cd:a0:90:66:08:03:f3:bf:ee:4b:1b:24:2b:69:b4:8c:4e:9f:11:64:aa
Signer

.text
Size: 291KB - Virtual size: 291KB

.rsrc
Size: 2KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B