Static task
static1
Behavioral task
behavioral1
Sample
2024-05-28_c735a787f65d4e0c08295e3661932819_bkransomware.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-28_c735a787f65d4e0c08295e3661932819_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-28_c735a787f65d4e0c08295e3661932819_bkransomware
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Size
71KB
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MD5
c735a787f65d4e0c08295e3661932819
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SHA1
fbb0c5e7d46e3751fd735fa516d5f627e7902777
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SHA256
a4ff4205437cd9b8d7084c0e397f68d8ed90f803e9bdc7028f5f8783ccaf002e
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SHA512
4c6fa06bfdd31cec60a7799519b726185d8632de5f0827b57da32281088f9de5e7823b25e2be3006fab0fee28f85674b7ef81fd46732fcd4fb35da1e903a2a54
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SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT4K:ZhpAyazIlyazT4K
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-05-28_c735a787f65d4e0c08295e3661932819_bkransomware
Files
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2024-05-28_c735a787f65d4e0c08295e3661932819_bkransomware.exe windows:5 windows x86 arch:x86
46ad3d954e527f769e37017b3e128039
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
Imports
kernel32
WriteFile
ReadFile
CreateFileW
FlushFileBuffers
GetLastError
FindClose
LocalAlloc
GetLogicalDriveStringsW
LocalFree
CreateThread
ExpandEnvironmentStringsW
WriteConsoleW
SetFilePointerEx
SetStdHandle
GetConsoleMode
CreateProcessW
SetFilePointer
GetDriveTypeW
FindFirstFileW
CreateMutexW
GetFileSize
GetEnvironmentVariableW
FindNextFileW
ExitProcess
GetConsoleCP
GetCommandLineW
IsProcessorFeaturePresent
SetLastError
GetCurrentThreadId
EncodePointer
DecodePointer
GetModuleHandleExW
GetProcAddress
MultiByteToWideChar
WideCharToMultiByte
GetProcessHeap
GetStdHandle
GetFileType
DeleteCriticalSection
GetStartupInfoW
GetModuleFileNameW
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
GetEnvironmentStringsW
FreeEnvironmentStringsW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
InitializeCriticalSectionAndSpinCount
Sleep
GetCurrentProcess
TerminateProcess
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetModuleHandleW
EnterCriticalSection
LeaveCriticalSection
HeapFree
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
IsDebuggerPresent
LoadLibraryExW
RtlUnwind
OutputDebugStringW
HeapAlloc
HeapReAlloc
GetStringTypeW
HeapSize
LCMapStringW
CloseHandle
user32
wsprintfW
advapi32
RegCloseKey
CryptGenRandom
RegCreateKeyW
CryptAcquireContextW
RegSetValueExW
ntdll
RtlAdjustPrivilege
NtDelayExecution
NtClose
Sections
.text Size: 59KB - Virtual size: 59KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ