sj[.]exe | Triage

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General

Target

sj.exe
Size

2.6MB
MD5

bce0df8721504d50f4497c0a0a2c090d
SHA1

2c5b190d19f0f58e156bd1b28434701cea09cc23
SHA256

112a64190b9a0f356880eebf05e195f4c16407032bf89fa843fd136da6f5d515
SHA512

8eca2571399782952e984b4d7c8f525a9c0092396ac8dc592d98acd0efdf2b6959a4b1272bcfb7e3a38060d269deabfd676b1fef2e830df3baab43e206d2f7fc
SSDEEP

12288:qlQq2wwLHqpVxTp5WK1QAPPAV/Ykfgn6ggKh:u2wwT45xQwkfg93h

Score

9^/10

cryptone packer

Malware Config

Signatures

CryptOne packer 1 IoCs
Detects CryptOne packer defined in NCC blogpost.
cryptone packer

Processes:

resource yara_rule

sample cryptone

resource	yara_rule
sample	cryptone

Files

sj.exe
.exe windows x86

829e83c1d2d988349a749b806aa9cfef

Code Sign

75:9c:2a:a2:8c:c9:bd:a1:42:58:bf:7a:11:a9:74:68
Certificate

Issuer

CN=BJFUVOTKKGVSSQLTLY

Not Before

17-06-2020 16:35

Not After

31-12-2039 23:59

Subject

CN=BJFUVOTKKGVSSQLTLY

Extended Key Usages

ExtKeyUsageCodeSigning

0b:ec:75:a4:b4:e0:d3:ce:2e:e0:8d:bb:6b:ff:6f:55:64:c6:6e:14
Signer

Actual PE Digest

0b:ec:75:a4:b4:e0:d3:ce:2e:e0:8d:bb:6b:ff:6f:55:64:c6:6e:14

Digest Algorithm

sha1

PE Digest Matches

false

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=BJFUVOTKKGVSSQLTLY

09-03-2023 18:57
Valid: false

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

Sleep
GetLastError
GetModuleHandleW
LoadLibraryA
GetProcAddress
CreateMutexA
HeapFree
HeapAlloc
EnterCriticalSection
LeaveCriticalSection
ExitProcess
GetCommandLineA
GetSystemTimeAsFileTime
RtlUnwind
TerminateProcess
GetCurrentProcess
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
HeapCreate
VirtualFree
DeleteCriticalSection
VirtualAlloc
HeapReAlloc
WriteFile
GetStdHandle
GetModuleFileNameA
SetHandleCount
GetFileType
GetStartupInfoA
MultiByteToWideChar
ReadFile
WideCharToMultiByte
GetConsoleCP
GetConsoleMode
SetFilePointer
CloseHandle
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
SetLastError
GetCurrentThreadId
InterlockedDecrement
InitializeCriticalSectionAndSpinCount
RaiseException
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
GetEnvironmentStringsW
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
GetModuleHandleA
HeapSize
FlushFileBuffers
CreateFileA
SetStdHandle
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
WriteConsoleA
GetConsoleOutputCP
WriteConsoleW
GetLocaleInfoA
SetEndOfFile
GetProcessHeap
LCMapStringA
LCMapStringW
GetStringTypeA
GetStringTypeW
CreateThread
LocalFree
GetTimeZoneInformation
GetSystemTime
SystemTimeToFileTime
LocalFileTimeToFileTime
FileTimeToLocalFileTime
FileTimeToSystemTime
CompareFileTime
DosDateTimeToFileTime
FileTimeToDosDateTime
GetLocalTime
lstrcpyW
MulDiv
GetFullPathNameW
GetFullPathNameA
GetCurrentDirectoryW
MoveFileW
CopyFileW
CopyFileA
GetFileAttributesW
DeleteFileW
FindFirstFileW
SetEvent
OpenEventA
OutputDebugStringA
OutputDebugStringW
UnmapViewOfFile
GetSystemInfo
MapViewOfFile
CreateFileMappingA
GetCurrentThread
OpenFileMappingA
FindClose
GetModuleFileNameW
GetTempPathW
CreateFileW
GetFileSize
lstrcpynW
lstrlenW
WinExec
GetWindowsDirectoryW
LoadLibraryW
FreeLibrary
GetCurrentDirectoryA
FindNextFileW
CreateDirectoryW
SetCurrentDirectoryW
SetCurrentDirectoryA
SetFileAttributesW
RemoveDirectoryW
FindNextFileA
FindFirstFileA
InitializeCriticalSection
DeleteFileA
MoveFileA
GetFileAttributesA
FormatMessageA
GetTempPathA
VirtualQuery
lstrlenA
DebugBreak
GetStartupInfoW
InterlockedCompareExchange
InterlockedExchange
LocalAlloc
GetSystemDirectoryA
GetVersionExA
SetFileTime
GetFileTime
GetComputerNameA
SetFileAttributesA
CreateDirectoryA

user32

LoadCursorFromFileA
GetQueueStatus
IsCharAlphaNumericA
GetCursor
IsCharUpperA
CharNextW
GetSysColor
GetKeyState
DdeCmpStringHandles
GetProcessWindowStation
ReleaseDC
SetProcessDefaultLayout
ArrangeIconicWindows
BlockInput
RealGetWindowClassA
IntersectRect
UnionRect
OffsetRect
GetSystemMetrics
GetAsyncKeyState
InflateRect
EqualRect
SetRect
SetRectEmpty
PtInRect
CopyRect
SubtractRect
IsRectEmpty
wsprintfW
SendMessageW
GetFocus
RegisterWindowMessageW
LoadCursorW
CopyIcon
IsWindow
SetCursor
GetMessagePos
MessageBeep
SetWindowLongW
DestroyCursor

gdi32

FillPath
DeleteDC
EndPage
EndPath
CreateHalftonePalette
DeleteEnhMetaFile
CreateMetaFileA
EndDoc
CreateSolidBrush
CloseMetaFile
DeleteColorSpace
CreateMetaFileW
CreateCompatibleDC
CloseFigure
FlattenPath
CreatePatternBrush
DeleteObject
DeleteMetaFile
GetSystemPaletteUse
AbortDoc
GetPolyFillMode
GetStockObject
RealizePalette
GetColorSpace
GetTextExtentExPointW
GdiCleanCacheDC
GdiEntry7
GdiStartDocEMF
SetBitmapBits
CreateRoundRectRgn
STROBJ_bGetAdvanceWidths
GdiDescribePixelFormat
GetTextFaceAliasW
SetRelAbs
XLATEOBJ_cGetPalette
GetDeviceCaps
CreateDCW

advapi32

GetUserNameA
RegOpenKeyA
RegQueryValueExA
SetThreadToken
RegCloseKey
RegQueryValueW
RegOpenKeyExW
RegEnumKeyExW
RegEnumValueW
RegQueryInfoKeyW
RegOpenKeyExA
RegCreateKeyExA
CryptAcquireContextA
CryptDestroyKey
CryptReleaseContext
CryptGenKey
CryptGenRandom
RegDeleteValueA
RegEnumValueA
RegSetValueExA
RegSetValueExW
CryptGetProvParam
CryptEnumProvidersA
CryptGetUserKey
CryptDestroyHash
CryptCreateHash
CryptGetHashParam
CryptHashData
CryptExportKey
CryptImportKey
CryptDeriveKey
OpenThreadToken
RevertToSelf

shell32

ExtractAssociatedIconA
SHCreateProcessAsUserW
SHGetDiskFreeSpaceA
ShellExecuteW
ShellExecuteExW
ExtractIconW

ole32

CoTaskMemFree
StringFromCLSID

shlwapi

PathFindFileNameW
PathRemoveFileSpecW
PathCombineW

Sections

.text
Size: 80KB - Virtual size: 80KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 512B - Virtual size: 263B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

a2
Size: 512B - Virtual size: 10B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

a3
Size: 2.4MB - Virtual size: 2.4MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

a32
Size: 1024B - Virtual size: 1010B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

a322
Size: 124KB - Virtual size: 123KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 50KB - Virtual size: 50KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

829e83c1d2d988349a749b806aa9cfef

Code Sign

75:9c:2a:a2:8c:c9:bd:a1:42:58:bf:7a:11:a9:74:68Certificate

Extended Key Usages

0b:ec:75:a4:b4:e0:d3:ce:2e:e0:8d:bb:6b:ff:6f:55:64:c6:6e:14Signer

Signature Validations

Verification

09-03-2023 18:57 Valid: false

Headers

File Characteristics

Imports

kernel32

user32

gdi32

advapi32

shell32

ole32

shlwapi

Sections

.text Size: 80KB - Virtual size: 80KB

.rdata Size: 512B - Virtual size: 263B

.data Size: 11KB - Virtual size: 11KB

a2 Size: 512B - Virtual size: 10B

a3 Size: 2.4MB - Virtual size: 2.4MB

a32 Size: 1024B - Virtual size: 1010B

a322 Size: 124KB - Virtual size: 123KB

.rsrc Size: 50KB - Virtual size: 50KB

75:9c:2a:a2:8c:c9:bd:a1:42:58:bf:7a:11:a9:74:68
Certificate

0b:ec:75:a4:b4:e0:d3:ce:2e:e0:8d:bb:6b:ff:6f:55:64:c6:6e:14
Signer

09-03-2023 18:57
Valid: false

.text
Size: 80KB - Virtual size: 80KB

.rdata
Size: 512B - Virtual size: 263B

.data
Size: 11KB - Virtual size: 11KB

a2
Size: 512B - Virtual size: 10B

a3
Size: 2.4MB - Virtual size: 2.4MB

a32
Size: 1024B - Virtual size: 1010B

a322
Size: 124KB - Virtual size: 123KB

.rsrc
Size: 50KB - Virtual size: 50KB