BCA_KeyGen[.]exe | Triage™

Sharing

Copy URL Twitter E-mail

General

Target
BCA_KeyGen.exe
Size 746KB
Sample260824-2dtxmszwe1
SHA256 6bfec2aef956068c6b176b8ddadb9342a050ff72846c91095098d09c6796d5a8
MD5 cdbd97e07b032c888b0b9556d71b1dac
SHA1 868cf7395364a0a569e6de8afec21bed94060299
SHA512 3860e3862edf9884ee3056861b127e26f18a80d68a4ff63910e54e6c35f7712d2b1b572e26078dcdd779cff9ec1eac15fe6542b3029dc8fea1d21e02dd4ed322
SSDEEP 12288:Uc9t2SllJmw3o4gVrZ7V0yfORJGqjU487J62KhnmKh6:UcLjmE1Et7V0R0f7J6hn/6
TLSH
T1C8F42382FC6584E7D436073288FBDA71A7372D988B6386C72B9977391B732934827543
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

installer

Malware Config

Signatures

Unsigned PE 3 IoCs

Checks for missing Authenticode signature.

resource
BCA_KeyGen.exe
unpack001/$TEMP/BASSMOD.dll
unpack001/$TEMP/keygen.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

File Explorer

BCA_KeyGen.exe

.exe 746KB
$TEMP/BASSMOD.dll

.dll 33KB
$TEMP/bgm.s3m

626KB
$TEMP/keygen.exe

.exe 442KB

BCA_KeyGen.exe

IMPHASH b1a57b635b23ffd553b3fd1e0960b2bd
SHA256 6bfec2aef956068c6b176b8ddadb9342a050ff72846c91095098d09c6796d5a8
MD5 cdbd97e07b032c888b0b9556d71b1dac
SHA1 868cf7395364a0a569e6de8afec21bed94060299
SHA512 3860e3862edf9884ee3056861b127e26f18a80d68a4ff63910e54e6c35f7712d2b1b572e26078dcdd779cff9ec1eac15fe6542b3029dc8fea1d21e02dd4ed322
SSDEEP 12288:Uc9t2SllJmw3o4gVrZ7V0yfORJGqjU487J62KhnmKh6:UcLjmE1Et7V0R0f7J6hn/6
TLSH
T1C8F42382FC6584E7D436073288FBDA71A7372D988B6386C72B9977391B732934827543
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.
NSIS installer

installer

Minor OS version

Major OS version

Entry point

12908

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

kernel32

GetTickCount GetShortPathNameA GetFullPathNameA MoveFileA SetCurrentDirectoryA GetFileAttributesA SetFileAttributesA CompareFileTime SearchPathA CreateFileA GetFileSize GetModuleFileNameA GetCurrentProcess CopyFileA ExitProcess GetWindowsDirectoryA Sleep lstrcmpiA lstrlenA GetVersion SetErrorMode lstrcpynA GetDiskFreeSpaceA GlobalUnlock GlobalLock CreateThread GetLastError CreateDirectoryA CreateProcessA RemoveDirectoryA GetTempFileNameA lstrcatA GetSystemDirectoryA WaitForSingleObject SetFileTime CloseHandle GlobalFree lstrcmpA ExpandEnvironmentStringsA GetExitCodeProcess GlobalAlloc GetCommandLineA GetTempPathA GetProcAddress FindFirstFileA FindNextFileA DeleteFileA SetFilePointer ReadFile FindClose GetPrivateProfileStringA WritePrivateProfileStringA WriteFile MulDiv MultiByteToWideChar LoadLibraryExA GetModuleHandleA FreeLibrary

user32

SetCursor GetWindowRect EnableMenuItem GetSystemMenu SetClassLongA IsWindowEnabled SetWindowPos GetSysColor EndDialog ScreenToClient LoadCursorA CheckDlgButton GetMessagePos LoadBitmapA CallWindowProcA IsWindowVisible CloseClipboard SetForegroundWindow GetWindowLongA RegisterClassA TrackPopupMenu AppendMenuA CreatePopupMenu GetSystemMetrics SetDlgItemTextA GetDlgItemTextA MessageBoxIndirectA CharPrevA DispatchMessageA PeekMessageA GetDC EnableWindow InvalidateRect SendMessageA DefWindowProcA BeginPaint GetClientRect FillRect DrawTextA SystemParametersInfoA CreateWindowExA GetClassInfoA DialogBoxParamA CharNextA ExitWindowsEx SetTimer PostQuitMessage SetWindowLongA SendMessageTimeoutA LoadImageA wsprintfA GetDlgItem FindWindowExA IsWindow SetClipboardData EmptyClipboard OpenClipboard EndPaint CreateDialogParamA DestroyWindow ShowWindow SetWindowTextA

gdi32

SelectObject SetBkMode CreateFontIndirectA SetTextColor DeleteObject GetDeviceCaps CreateBrushIndirect SetBkColor

shell32

SHGetSpecialFolderLocation SHGetPathFromIDListA SHBrowseForFolderA SHGetFileInfoA SHFileOperationA ShellExecuteA

advapi32

RegDeleteValueA SetFileSecurityA RegOpenKeyExA RegDeleteKeyA RegEnumValueA RegCloseKey RegCreateKeyExA RegSetValueExA RegQueryValueExA RegEnumKeyA

comctl32

ImageList_AddMasked ImageList_Destroy ImageList_Create ord17

ole32

OleUninitialize OleInitialize CoTaskMemFree CoCreateInstance

$TEMP/BASSMOD.dll

SHA256 8ad9e47693e292f381da42ddc13724a3063040e51c26f4ca8e1f8e2f1ddd547f
MD5 e4ec57e8508c5c4040383ebe6d367928
SHA1 b22bcce36d9fdeae8ab7a7ecc0b01c8176648d06
SHA512 77d5cf66caf06e192e668fae2b2594e60a498e8e0ccef5b09b9710721a4cdb0c852d00c446fd32c5b5c85e739de2e73cb1f1f6044879fe7d237341bbb6f27822
SSDEEP 768:qQmS5iUgi5czW+DlrQOS1DeDdjgNtbX4O6DHix84H0:qQz5Tgof+DdpS1+djctLSHiZ0
TLSH
T130F2E1B43B18CDE2DDC807F41FE4E6A879DB92026A13DBC5D697CA97328B4914D42F11
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.
NSIS installer

installer

Minor OS version

Major OS version

Entry point

73795

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_DLL

PDB paths

$TEMP/keygen.exe

IMPHASH 61baf0ac33a569be37eaea52c317de1e
SHA256 0d1ee18423f3b5e324c1c36170720164649a47b79b25e2a81bd233bdfc401738
MD5 94f29e6f78ba57adc744c1a03ee14ec7
SHA1 b77b225d15a485af75554f13f82dc13f7f70ff11
SHA512 e47c95704718c024584510c9674a61a8978b52853a661aa027056d4fb66a2bd953f0d2c5303645b5868f7be4586669afd8d3062559da23889504eb1aa3cfdac8
SSDEEP 12288:bc/kEPDonR6Y436vRR+KeGwbWZp4SFU+UF:SLonR6Y43mu
TLSH
T125A4A49AEA238635E92FC13BA1D88EF74544327297CB24BB51674E74CF543C026F92D8
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.
NSIS installer

installer

Minor OS version

Major OS version

Entry point

155256

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

comctl32

_TrackMouseEvent ord17

msimg32

GradientFill

kernel32

FreeEnvironmentStringsA UnhandledExceptionFilter VirtualQuery VirtualProtect GetStringTypeW GetStringTypeA IsValidCodePage IsValidLocale EnumSystemLocalesA GetLocaleInfoA GetUserDefaultLCID GetCPInfo GetOEMCP GetACP HeapSize SetUnhandledExceptionFilter WriteFile GetFileType GetStdHandle SetHandleCount IsBadWritePtr VirtualAlloc VirtualFree HeapCreate HeapDestroy ReadFile CloseHandle LCMapStringW LCMapStringA SetFilePointer GetCurrentProcess TerminateProcess ExitProcess GetVersionExA GetStartupInfoA GetModuleHandleA SetCurrentDirectoryA SetEnvironmentVariableA CreateDirectoryA GetFullPathNameA GetCurrentDirectoryA GetDriveTypeA HeapReAlloc RtlUnwind RaiseException HeapFree HeapAlloc FreeEnvironmentStringsW GetEnvironmentStringsW SetStdHandle FlushFileBuffers CreateFileA IsBadReadPtr IsBadCodePtr QueryPerformanceCounter GetLocalTime FindFirstFileA FindNextFileA GetLastError FindClose DeleteFileA GetShortPathNameA GlobalLock GlobalUnlock MulDiv GlobalAlloc GlobalFree WideCharToMultiByte MultiByteToWideChar WinExec GetWindowsDirectoryA GetSystemDirectoryA GetSystemInfo GlobalMemoryStatus GetVersion GetComputerNameA FreeLibrary LoadLibraryA GetProcAddress GetCommandLineA Sleep GetTickCount GetModuleFileNameA GetLocaleInfoW GetCurrentThreadId GetCurrentProcessId GetSystemTimeAsFileTime InterlockedExchange SetEndOfFile GetEnvironmentStrings

user32

UnregisterClassA AdjustWindowRectEx LoadIconA LoadCursorA RegisterClassA PostQuitMessage DefWindowProcA InvalidateRect BeginPaint EndPaint FillRect TabbedTextOutA GetSysColor MoveWindow ReleaseDC GetClassLongA SetClassLongA SetWindowLongA IsWindowEnabled EnableWindow SetFocus GetFocus GetWindowLongA GetClientRect InflateRect DrawFocusRect DrawTextA PostMessageA SetWindowTextA GetDlgItemTextA GetDlgCtrlID IsDlgButtonChecked CallWindowProcA FindWindowA MsgWaitForMultipleObjects PeekMessageA GetMessageA TranslateMessage DispatchMessageA MapVirtualKeyA GetWindowRect SetActiveWindow SetWindowPos GetAsyncKeyState GetCursorPos ShowCursor SetCursorPos MessageBoxA EnumDisplaySettingsA ChangeDisplaySettingsA CreateWindowExA ShowWindow SendMessageA DestroyWindow GetDC GetSystemMetrics GetActiveWindow

gdi32

CreateDIBSection CreateCompatibleDC Rectangle DeleteDC SetBkColor SetStretchBltMode StretchBlt Ellipse MoveToEx LineTo SetPixel GetPixel GetTextExtentPoint32A SetDIBColorTable CreatePalette CreatePen GetTextMetricsA SelectPalette RealizePalette BitBlt SelectObject SetBkMode SetTextColor GetStockObject CreateFontIndirectA DeleteObject CreateSolidBrush GetDeviceCaps

comdlg32

GetSaveFileNameA ChooseColorA GetOpenFileNameA

advapi32

GetUserNameA

shell32

ShellExecuteA ShellExecuteExA SHGetSpecialFolderPathA

ole32

CoCreateInstance IIDFromString CLSIDFromProgID CoUninitialize CreateStreamOnHGlobal OleUninitialize CoInitializeEx OleInitialize

oleaut32

SafeArrayGetUBound SafeArrayGetLBound SafeArrayGetVartype SafeArrayCopy OleLoadPicture SafeArrayGetElement VariantClear VariantInit SafeArrayAccessData SafeArrayGetDim SafeArrayUnaccessData SafeArrayCreate SysFreeString SysAllocStringByteLen VariantChangeType VariantCopyInd VariantCopy SysAllocString SafeArrayPutElement

winmm

sndPlaySoundA mciSendStringA timeEndPeriod timeGetDevCaps timeBeginPeriod timeGetTime

BCA_KeyGen.exe

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

generic

$TEMP/BASSMOD.dll

generic

$TEMP/bgm.s3m

$TEMP/keygen.exe

comctl32

msimg32

kernel32

user32

gdi32

comdlg32

advapi32

shell32

ole32

oleaut32

winmm

generic