c:\builds\moz2_slave\rel-m-rel-w32_bld-000000000000\build\obj-firefox\webapprt\win\webapprt-stub.pdb
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-16_b259a268fb6f4ffa333c03628d7445d1_bkransomware.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-16_b259a268fb6f4ffa333c03628d7445d1_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-16_b259a268fb6f4ffa333c03628d7445d1_bkransomware
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Size
2.1MB
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MD5
b259a268fb6f4ffa333c03628d7445d1
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SHA1
b599ff19f19bb6d36c9a2363c7864e6a36ab274f
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SHA256
a4a36d624f1603e39a6c7d4066ef015d16dfbf587052c07aea0c60b8753b59d1
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SHA512
55d19766871a8d0e1f1a67242cafaf388c1f23810e6dff8bca93697f04830587354fb7974be29f47a867195593468c5b1e8b8be1894fcf2950c3dd0f51c270a1
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SSDEEP
24576:j+SBC2UlwRk1pL1D5mSTaewsAjuyLfUncuzKPgssStPUvgB:qS9vRk1B1d+ljPLfUnhKPgssSt2gB
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-05-16_b259a268fb6f4ffa333c03628d7445d1_bkransomware
Files
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2024-05-16_b259a268fb6f4ffa333c03628d7445d1_bkransomware.exe windows:5 windows x86 arch:x86
0792b8d472f7273600d1b151bb4d5100
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
PDB Paths
Imports
kernel32
MoveFileExW
GetCurrentProcess
SetEnvironmentVariableW
GetModuleHandleW
WideCharToMultiByte
CopyFileW
VerifyVersionInfoA
GetModuleFileNameW
MultiByteToWideChar
FlushInstructionCache
GetProcAddress
MoveFileW
VirtualProtectEx
VirtualAllocEx
GetModuleHandleA
VerSetConditionMask
CloseHandle
ExpandEnvironmentStringsW
VirtualFree
TerminateProcess
VirtualAlloc
GetSystemInfo
FreeLibrary
LoadLibraryExW
IsDebuggerPresent
SetFilePointerEx
ReadFile
CreateFileW
WriteConsoleW
SetEnvironmentVariableA
SetDllDirectoryW
CreateProcessW
LoadLibraryExA
GetEnvironmentVariableW
EncodePointer
DecodePointer
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
GetStringTypeW
GetCommandLineW
IsProcessorFeaturePresent
GetLastError
HeapFree
HeapAlloc
HeapReAlloc
RaiseException
RtlUnwind
GetCPInfo
UnhandledExceptionFilter
SetUnhandledExceptionFilter
SetLastError
InitializeCriticalSectionAndSpinCount
Sleep
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetStartupInfoW
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
GetCurrentThreadId
ExitProcess
GetModuleHandleExW
GetProcessHeap
GetStdHandle
GetFileType
WriteFile
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
GetEnvironmentStringsW
FreeEnvironmentStringsW
HeapSize
GetConsoleMode
ReadConsoleW
FlushFileBuffers
GetConsoleCP
SetStdHandle
IsValidCodePage
GetACP
GetOEMCP
OutputDebugStringW
SetEndOfFile
user32
MessageBoxW
advapi32
RegOpenKeyExW
RegQueryValueExW
RegCloseKey
Exports
Exports
??0Decimal@WebCore@@QAE@ABV01@@Z
??0Decimal@WebCore@@QAE@ABVEncodedData@01@@Z
??0Decimal@WebCore@@QAE@H@Z
??0Decimal@WebCore@@QAE@W4Sign@01@H_K@Z
??0SHA1Sum@mozilla@@QAE@XZ
??4Decimal@WebCore@@QAEAAV01@ABV01@@Z
??8Decimal@WebCore@@QBE_NABV01@@Z
??9Decimal@WebCore@@QBE_NABV01@@Z
??DDecimal@WebCore@@QBE?AV01@ABV01@@Z
??GDecimal@WebCore@@QBE?AV01@ABV01@@Z
??GDecimal@WebCore@@QBE?AV01@XZ
??HDecimal@WebCore@@QBE?AV01@ABV01@@Z
??KDecimal@WebCore@@QBE?AV01@ABV01@@Z
??MDecimal@WebCore@@QBE_NABV01@@Z
??NDecimal@WebCore@@QBE_NABV01@@Z
??ODecimal@WebCore@@QBE_NABV01@@Z
??PDecimal@WebCore@@QBE_NABV01@@Z
??XDecimal@WebCore@@QAEAAV01@ABV01@@Z
??YDecimal@WebCore@@QAEAAV01@ABV01@@Z
??ZDecimal@WebCore@@QAEAAV01@ABV01@@Z
??_0Decimal@WebCore@@QAEAAV01@ABV01@@Z
??_FDecimal@WebCore@@QAEXXZ
?CreateDecimalRepresentation@DoubleToStringConverter@double_conversion@@ABEXPBDHHHPAVStringBuilder@2@@Z
?CreateExponentialRepresentation@DoubleToStringConverter@double_conversion@@ABEXPBDHHPAVStringBuilder@2@@Z
?DoubleToAscii@DoubleToStringConverter@double_conversion@@SAXNW4DtoaMode@12@HPADHPA_NPAH3@Z
?EcmaScriptConverter@DoubleToStringConverter@double_conversion@@SAABV12@XZ
?HandleSpecialValues@DoubleToStringConverter@double_conversion@@ABE_NNPAVStringBuilder@2@@Z
?HashBytes@mozilla@@YAIPBXI@Z
?IsFloat32Representable@mozilla@@YA_NN@Z
?ToExponential@DoubleToStringConverter@double_conversion@@QBE_NNHPAVStringBuilder@2@@Z
?ToFixed@DoubleToStringConverter@double_conversion@@QBE_NNHPAVStringBuilder@2@@Z
?ToPrecision@DoubleToStringConverter@double_conversion@@QBE_NNHPA_NPAVStringBuilder@2@@Z
?ToShortestIeeeNumber@DoubleToStringConverter@double_conversion@@ABE_NNPAVStringBuilder@2@W4DtoaMode@12@@Z
?abs@Decimal@WebCore@@QBE?AV12@XZ
?alignOperands@Decimal@WebCore@@CA?AUAlignedOperands@12@ABV12@0@Z
?ceiling@Decimal@WebCore@@QBE?AV12@XZ
?compareTo@Decimal@WebCore@@ABE?AV12@ABV12@@Z
?compress@LZ4@Compression@mozilla@@SAIPBDIPAD@Z
?compressLimitedOutput@LZ4@Compression@mozilla@@SAIPBDIPADI@Z
?decompress@LZ4@Compression@mozilla@@SA_NPBDIPADIPAI@Z
?decompress@LZ4@Compression@mozilla@@SA_NPBDPADI@Z
?finish@SHA1Sum@mozilla@@QAEXAAY0BE@E@Z
?floor@Decimal@WebCore@@QBE?AV12@XZ
?fromDouble@Decimal@WebCore@@SA?AV12@N@Z
?fromString@Decimal@WebCore@@SA?AV12@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z
?gChaosFeatures@detail@mozilla@@3W4ChaosFeature@2@A
?gChaosModeCounter@detail@mozilla@@3V?$Atomic@I$01X@2@A
?gTwoCharEscapes@detail@mozilla@@3QBDB
?infinity@Decimal@WebCore@@SA?AV12@W4Sign@12@@Z
?kBase10MaximalLength@DoubleToStringConverter@double_conversion@@2HB
?nan@Decimal@WebCore@@SA?AV12@XZ
?remainder@Decimal@WebCore@@QBE?AV12@ABV12@@Z
?round@Decimal@WebCore@@QBE?AV12@XZ
?toDouble@Decimal@WebCore@@QBENXZ
?toString@Decimal@WebCore@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ
?toString@Decimal@WebCore@@QBE_NPADI@Z
?unused@mozilla@@3Uunused_t@1@B
?update@SHA1Sum@mozilla@@QAEXPBXI@Z
?zero@Decimal@WebCore@@SA?AV12@W4Sign@12@@Z
gMozillaPoisonBase
gMozillaPoisonSize
gMozillaPoisonValue
mozPoisonValueInit
Sections
.text Size: 161KB - Virtual size: 160KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 40KB - Virtual size: 39KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 6KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 7KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ