ReactOS_BootFlashInst[.]zip

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General

Target

ReactOS_BootFlashInst.zip
Size

2.3MB
MD5

2f35c64cb20f6fd11e644d4c35dca19b
SHA1

de0dab159f77ea1e8efebb5016fd0285b0f6dbbe
SHA256

624b66143ca11f39d0a8580ff475f3774d2ad01a15381ab4322f8142dd53dd60
SHA512

823820f66c84ddfe60c40f7dd1d2169ab92e5f0859e6b51ddf616cd552979efb6666fc9866472bc69c7c75b4d57ac309fecba2665553a01649a893e56cccbcda
SSDEEP

49152:1rfA4GHYRi6fYwRX4Cgmb0KRfqQXHDwcLKpKhYcD3qWgBNzE9T:1WHZ6fYiXfgm1VTcp/cLqWuNzK

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
static1/unpack001/ReactOS_BootFlashInst/ReactOS_boot_flash.exe	upx
static1/unpack001/ReactOS_BootFlashInst/Rufus/rufus.exe	upx

Unsigned PE 3 IoCs

Checks for missing Authenticode signature.

resource
unpack001/ReactOS_BootFlashInst/ReactOS_boot_flash.exe
unpack001/ReactOS_BootFlashInst/iso/7z.exe
unpack001/ReactOS_BootFlashInst/rufus.com

Files

ReactOS_BootFlashInst.zip
.zip
ReactOS_BootFlashInst/ReactOS_boot_flash.exe
.exe windows:1 windows x86 arch:x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

UPX0
Size: - Virtual size: 1.0MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 300KB - Virtual size: 304KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 5KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
ReactOS_BootFlashInst/ReactOS_boot_flash.exe.manifest
.xml
ReactOS_BootFlashInst/Rufus/rufus.exe
.exe windows:4 windows x86 arch:x86

Code Sign

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16
Certificate

Issuer

CN=AAA Certificate Services,O=Comodo CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

25/05/2021, 00:00

Not After

31/12/2028, 23:59

Subject

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6e
Certificate

Issuer

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

Not Before

22/03/2021, 00:00

Not After

21/03/2036, 23:59

Subject

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

bf:b1:50:01:bb:f5:92:d4:96:2a:77:97:ea:73:6f:a3
Certificate

Issuer

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

Not Before

29/09/2021, 00:00

Not After

28/09/2024, 23:59

Subject

SERIALNUMBER=407950,CN=Akeo Consulting,O=Akeo Consulting,ST=Donegal,C=IE,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024945

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

Issuer

CN=VeriSign Universal Root Certification Authority,OU=VeriSign Trust Network+OU=(c) 2008 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

12/01/2016, 00:00

Not After

11/01/2031, 23:59

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

23/12/2017, 00:00

Not After

22/03/2029, 23:59

Subject

CN=Symantec SHA256 TimeStamping Signer - G3,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

1f:a6:98:0a:ef:92:30:05:fd:ce:de:2a:01:bb:f5:60:a8:f9:8b:75:99:87:37:e8:e9:bf:49:79:5c:fc:a8:32
Signer

Actual PE Digest

1f:a6:98:0a:ef:92:30:05:fd:ce:de:2a:01:bb:f5:60:a8:f9:8b:75:99:87:37:e8:e9:bf:49:79:5c:fc:a8:32

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED

Sections

UPX0
Size: - Virtual size: 2.6MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 41KB - Virtual size: 44KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
ReactOS_BootFlashInst/Rufus/rufus.log
ReactOS_BootFlashInst/freeldr.ini.tpl
ReactOS_BootFlashInst/freeldr.sys
ReactOS_BootFlashInst/iso/7z.bat
ReactOS_BootFlashInst/iso/7z.exe
.exe windows:4 windows x86 arch:x86

c444469cbe22275cfd4ded99c1be29d1

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

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

Imports

oleaut32

VariantCopy
SysAllocStringLen
SysAllocString
SysFreeString
SysStringLen
VariantClear

user32

CharPrevExA
CharUpperW

advapi32

OpenProcessToken
GetFileSecurityW
SetFileSecurityW
RegQueryValueExW
RegCloseKey
RegOpenKeyExW
AdjustTokenPrivileges
LookupPrivilegeValueW

msvcrt

_controlfp
__set_app_type
__p__fmode
__p__commode
_adjust_fdiv
__setusermatherr
_initterm
__getmainargs
__p___initenv
_XcptFilter
_exit
_onexit
__dllonexit
??1type_info@@UAE@XZ
?terminate@@YAXXZ
_except_handler3
_beginthreadex
exit
realloc
_ftol
memset
strlen
wcscmp
wcsstr
strcmp
memmove
fputs
fputc
fflush
fgetc
_iob
free
malloc
memcmp
_purecall
memcpy
_CxxThrowException
__CxxFrameHandler
_isatty
_fileno

kernel32

SetThreadAffinityMask
CreateEventW
SetEvent
ResetEvent
CreateSemaphoreW
ReleaseSemaphore
InitializeCriticalSection
WaitForSingleObject
MoveFileW
InterlockedIncrement
GetVersion
VirtualFree
VirtualAlloc
GetOEMCP
LocalFileTimeToFileTime
SetConsoleMode
GetConsoleMode
GetVersionExW
SetFileApisToOEM
GetCommandLineW
GetConsoleScreenBufferInfo
SetConsoleCtrlHandler
DeleteCriticalSection
QueryPerformanceFrequency
QueryPerformanceCounter
GetProcessTimes
OpenEventW
OpenFileMappingW
MapViewOfFile
UnmapViewOfFile
SetProcessAffinityMask
WaitForMultipleObjects
EnterCriticalSection
LeaveCriticalSection
GetStdHandle
GetSystemTimeAsFileTime
FileTimeToDosDateTime
DosDateTimeToFileTime
IsProcessorFeaturePresent
GlobalMemoryStatus
GetSystemInfo
GetProcessAffinityMask
FileTimeToLocalFileTime
FileTimeToSystemTime
CompareFileTime
GetCurrentProcess
GetDiskFreeSpaceW
GetLastError
MultiByteToWideChar
WideCharToMultiByte
FreeLibrary
LoadLibraryW
GetModuleFileNameW
LocalFree
FormatMessageW
CloseHandle
SetFileTime
CreateFileW
SetFileAttributesW
RemoveDirectoryW
GetProcAddress
GetModuleHandleW
CreateDirectoryW
DeleteFileW
SetLastError
SetCurrentDirectoryW
GetCurrentDirectoryW
GetTempPathW
GetCurrentProcessId
GetTickCount
GetCurrentThreadId
FindClose
FindFirstFileW
FindNextFileW
GetModuleHandleA
GetFileAttributesW
GetFileInformationByHandle
GetLogicalDriveStringsW
GetFileSize
SetFilePointer
DeviceIoControl
ReadFile
WriteFile
SetEndOfFile
ResumeThread

Sections

.text
Size: 680KB - Virtual size: 680KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 87KB - Virtual size: 86KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.sxdata
Size: 512B - Virtual size: 4B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 29KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
ReactOS_BootFlashInst/libcom32.c32
.elf linux x86
ReactOS_BootFlashInst/mboot.c32
.elf linux x86
ReactOS_BootFlashInst/rufus.com
.exe windows:5 windows x86 arch:x86

5efd5f8e2b233dc87e5dc040dd5e2dd5

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

OpenMutexA
WaitForSingleObject
WriteFile
ExitProcess
GetStdHandle

Sections

.text
Size: 512B - Virtual size: 170B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 512B - Virtual size: 180B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
ReactOS_BootFlashInst/rufus.ini
ReactOS_BootFlashInst/src/ROS16w.ico
ReactOS_BootFlashInst/src/ReactOS_boot_flash.bas
.vbs
ReactOS_BootFlashInst/src/RufusEnSysLinSS.bmp
ReactOS_BootFlashInst/src/inc/Form.inc
ReactOS_BootFlashInst/src/inc/QButtonXP.INC
ReactOS_BootFlashInst/src/inc/QProcess.inc
ReactOS_BootFlashInst/src/inc/QSHFileOperation.inc
ReactOS_BootFlashInst/src/inc/QXpTheme.INC
ReactOS_BootFlashInst/src/inc/qdrive2024.inc
.vbs
ReactOS_BootFlashInst/src/inc/rapidq.inc
.vbs
ReactOS_BootFlashInst/syslinux.cfg

Sharing

General

Malware Config

Signatures

Files

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 1.0MB

UPX1 Size: 300KB - Virtual size: 304KB

.rsrc Size: 5KB - Virtual size: 8KB

Code Sign

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16Certificate

Extended Key Usages

Key Usages

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6eCertificate

Extended Key Usages

Key Usages

bf:b1:50:01:bb:f5:92:d4:96:2a:77:97:ea:73:6f:a3Certificate

Extended Key Usages

Key Usages

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12Certificate

Extended Key Usages

Key Usages

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12Certificate

Extended Key Usages

Key Usages

1f:a6:98:0a:ef:92:30:05:fd:ce:de:2a:01:bb:f5:60:a8:f9:8b:75:99:87:37:e8:e9:bf:49:79:5c:fc:a8:32Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 2.6MB

UPX1 Size: 1.3MB - Virtual size: 1.3MB

.rsrc Size: 41KB - Virtual size: 44KB

c444469cbe22275cfd4ded99c1be29d1

Headers

DLL Characteristics

File Characteristics

Imports

oleaut32

user32

advapi32

msvcrt

kernel32

Sections

.text Size: 680KB - Virtual size: 680KB

.rdata Size: 87KB - Virtual size: 86KB

.data Size: 2KB - Virtual size: 28KB

.sxdata Size: 512B - Virtual size: 4B

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

.reloc Size: 29KB - Virtual size: 28KB

5efd5f8e2b233dc87e5dc040dd5e2dd5

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

Sections

.text Size: 512B - Virtual size: 170B

.rdata Size: 512B - Virtual size: 180B

UPX0
Size: - Virtual size: 1.0MB

UPX1
Size: 300KB - Virtual size: 304KB

.rsrc
Size: 5KB - Virtual size: 8KB

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16
Certificate

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6e
Certificate

bf:b1:50:01:bb:f5:92:d4:96:2a:77:97:ea:73:6f:a3
Certificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

1f:a6:98:0a:ef:92:30:05:fd:ce:de:2a:01:bb:f5:60:a8:f9:8b:75:99:87:37:e8:e9:bf:49:79:5c:fc:a8:32
Signer

UPX0
Size: - Virtual size: 2.6MB

UPX1
Size: 1.3MB - Virtual size: 1.3MB

.rsrc
Size: 41KB - Virtual size: 44KB

.text
Size: 680KB - Virtual size: 680KB

.rdata
Size: 87KB - Virtual size: 86KB

.data
Size: 2KB - Virtual size: 28KB

.sxdata
Size: 512B - Virtual size: 4B

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

.reloc
Size: 29KB - Virtual size: 28KB

.text
Size: 512B - Virtual size: 170B

.rdata
Size: 512B - Virtual size: 180B