blankgrabber | shark_botnet_c2[.]zip

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General

Target

shark_botnet_c2.zip
Size

6.8MB
MD5

bf52fb2803cc805f797b2f00ceb4260d
SHA1

6724edfefaaa0ac387d6f7bfae9ad6280eb6908a
SHA256

ba9ada271c0e3bb2c53762c41a19f414811f8b3079e107adbb64edbed4b45b53
SHA512

396880f658cb8b7289332db46b88a89a89dd3613295b5fb6919a1919607438b70054a2909cebf5f9f563485701f3176ecf4de6c7da728d4eba5775bdb06573c6
SSDEEP

196608:wPjxTGiNv++tfZT1dKp+nK6kbQ3sxInFWt:wZNvttfZTiUtkU3scO

Score

10^/10

blankgrabber

Malware Config

Signatures

A stealer written in Python and packaged with Pyinstaller 1 IoCs

Processes:

resource	yara_rule
static1/unpack002/��k�Yv.pyc	blankgrabber

Blankgrabber family
blankgrabber

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

Processes:

resource
unpack001/WinDivert.dll
unpack001/sharkbotnetc2.exe

Files

shark_botnet_c2.zip
.zip
WinDivert.dll
.dll windows:4 windows x64 arch:x64

4b5b0fb09f29ed8e5306bbb27b5ae668

Headers

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
IMAGE_FILE_DLL

Imports

advapi32

CloseServiceHandle
ControlService
CreateServiceW
DeleteService
OpenSCManagerW
OpenServiceW
StartServiceW

kernel32

CloseHandle
CreateEventW
CreateFileW
DeviceIoControl
GetLastError
GetModuleFileNameW
GetOverlappedResult
SetLastError
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue

msvcrt

isalnum
isspace
isxdigit
strcmp
tolower

Exports

Exports

DivertClose
DivertGetParam
DivertHelperCalcChecksums
DivertHelperParseIPv4Address
DivertHelperParseIPv6Address
DivertHelperParsePacket
DivertOpen
DivertRecv
DivertSend
DivertSetParam
WinDivertClose
WinDivertDllEntry
WinDivertGetParam
WinDivertHelperCalcChecksums
WinDivertHelperParseIPv4Address
WinDivertHelperParseIPv6Address
WinDivertHelperParsePacket
WinDivertOpen
WinDivertRecv
WinDivertRecvEx
WinDivertSend
WinDivertSendEx
WinDivertSetParam

Sections

.text
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 1024B - Virtual size: 992B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 1024B - Virtual size: 1024B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 512B - Virtual size: 360B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 512B - Virtual size: 288B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 16B

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 1024B - Virtual size: 730B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 1024B - Virtual size: 1016B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 132B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
WinDivert64.sys
.sys windows:6 windows x64 arch:x64

5c9956100a10f17fd6cacca768f3c364

Code Sign

7e:93:eb:fb:7c:c6:4e:59:ea:4b:9a:77:d4:06:fc:3b
Certificate

Issuer

CN=Thawte Timestamping CA,OU=Thawte Certification,O=Thawte,L=Durbanville,ST=Western Cape,C=ZA

Not Before

21-12-2012 00:00

Not After

30-12-2020 23:59

Subject

CN=Symantec Time Stamping Services CA - G2,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

0e:cf:f4:38:c8:fe:bf:35:6e:04:d8:6a:98:1b:1a:50
Certificate

Issuer

CN=Symantec Time Stamping Services CA - G2,O=Symantec Corporation,C=US

Not Before

18-10-2012 00:00

Not After

29-12-2020 23:59

Subject

CN=Symantec Time Stamping Services Signer - G4,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

0a:42:f1:e3:68:68:b7:25:06:ea:50:77:bf:7b:bc:5b
Certificate

Issuer

CN=DigiCert High Assurance Code Signing CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

18-08-2014 00:00

Not After

09-09-2015 12:00

Subject

CN=Nemea Mjukvaruutveckling AB,O=Nemea Mjukvaruutveckling AB,L=Stockholm,ST=Vastra Gotaland,C=SE

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

61:20:4d:b4:00:00:00:00:00:27
Certificate

Issuer

CN=Microsoft Code Verification Root,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

15-04-2011 19:45

Not After

15-04-2021 19:55

Subject

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

02:c4:d1:e5:8a:4a:68:0c:56:8d:a3:04:7e:7e:4d:5f
Certificate

Issuer

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

11-02-2011 12:00

Not After

10-02-2026 12:00

Subject

CN=DigiCert High Assurance Code Signing CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

97:da:76:ff:9a:56:81:d7:d7:9f:b8:81:15:69:91:15:f6:21:9c:00
Signer

Actual PE Digest

97:da:76:ff:9a:56:81:d7:d7:9f:b8:81:15:69:91:15:f6:21:9c:00

Digest Algorithm

sha1

PE Digest Matches

true

Headers

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

c:\windivert\install\WDDK\amd64\WinDivert64.pdb

Imports

ntoskrnl.exe

RtlCopyUnicodeString
KeBugCheckEx
IoAllocateMdl
MmMapLockedPagesSpecifyCache
IoFreeMdl
MmBuildMdlForNonPagedPool
KeAcquireInStackQueuedSpinLock
KeReleaseInStackQueuedSpinLock
ExFreePoolWithTag
ExUuidCreate
ExAllocatePoolWithTag

ndis.sys

NdisAdvanceNetBufferDataStart
NdisRetreatNetBufferDataStart
NdisAllocateNetBufferListPool
NdisGetDataBuffer
NdisFreeNetBufferListPool

fwpkclnt.sys

FwpmCalloutDeleteByKey0
FwpsInjectNetworkReceiveAsync0
FwpmSubLayerAdd0
FwpsCalloutUnregisterByKey0
FwpsFreeCloneNetBufferList0
FwpsQueryPacketInjectionState0
FwpsFreeNetBufferList0
FwpmEngineClose0
FwpmTransactionBegin0
FwpmFilterAdd0
FwpmEngineOpen0
FwpmTransactionAbort0
FwpsCalloutRegister0
FwpsInjectForwardAsync0
FwpmFilterDeleteByKey0
FwpmCalloutAdd0
FwpsInjectNetworkSendAsync0
FwpmTransactionCommit0
FwpsInjectionHandleCreate0
FwpsAllocateNetBufferAndNetBufferList0
FwpsInjectionHandleDestroy0
FwpmSubLayerDeleteByKey0

wdfldr.sys

WdfVersionBindClass
WdfVersionUnbindClass
WdfVersionBind
WdfVersionUnbind

Sections

.text
Size: 17KB - Virtual size: 16KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 1024B - Virtual size: 540B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

INIT
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 1008B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 246B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
barrier.cpp
desktop.ini
sharkbotnetc2.exe
.exe windows:6 windows x64 arch:x64

72c4e339b7af8ab1ed2eb3821c98713a

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

user32

CreateWindowExW
ShutdownBlockReasonCreate
MsgWaitForMultipleObjects
ShowWindow
DestroyWindow
RegisterClassW
DefWindowProcW
PeekMessageW
DispatchMessageW
TranslateMessage
PostMessageW
GetMessageW
MessageBoxW
MessageBoxA
SystemParametersInfoW
DestroyIcon
SetWindowLongPtrW
GetWindowLongPtrW
GetClientRect
InvalidateRect
ReleaseDC
GetDC
DrawTextW
GetDialogBaseUnits
EndDialog
DialogBoxIndirectParamW
MoveWindow
SendMessageW

comctl32

ord380

kernel32

GetACP
IsValidCodePage
GetStringTypeW
GetFileAttributesExW
SetEnvironmentVariableW
FlushFileBuffers
GetCurrentDirectoryW
LCMapStringW
CompareStringW
FlsFree
GetOEMCP
GetCPInfo
GetModuleHandleW
MulDiv
FormatMessageW
GetLastError
GetModuleFileNameW
LoadLibraryExW
SetDllDirectoryW
CreateSymbolicLinkW
GetProcAddress
GetEnvironmentStringsW
GetCommandLineW
GetEnvironmentVariableW
ExpandEnvironmentStringsW
DeleteFileW
FindClose
FindFirstFileW
FindNextFileW
GetDriveTypeW
RemoveDirectoryW
GetTempPathW
CloseHandle
QueryPerformanceCounter
QueryPerformanceFrequency
WaitForSingleObject
Sleep
GetCurrentProcess
TerminateProcess
GetExitCodeProcess
CreateProcessW
GetStartupInfoW
FreeLibrary
LocalFree
SetConsoleCtrlHandler
K32EnumProcessModules
K32GetModuleFileNameExW
CreateFileW
FindFirstFileExW
GetFinalPathNameByHandleW
MultiByteToWideChar
WideCharToMultiByte
FlsSetValue
FreeEnvironmentStringsW
GetProcessHeap
GetTimeZoneInformation
HeapSize
HeapReAlloc
WriteConsoleW
SetEndOfFile
CreateDirectoryW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsProcessorFeaturePresent
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
RtlUnwindEx
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
EncodePointer
RaiseException
RtlPcToFileHeader
GetCommandLineA
GetFileInformationByHandle
GetFileType
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
ReadFile
GetFullPathNameW
SetStdHandle
GetStdHandle
WriteFile
ExitProcess
GetModuleHandleExW
HeapFree
GetConsoleMode
ReadConsoleW
SetFilePointerEx
GetConsoleOutputCP
GetFileSizeEx
HeapAlloc
FlsAlloc
FlsGetValue

advapi32

OpenProcessToken
GetTokenInformation
ConvertStringSecurityDescriptorToSecurityDescriptorW
ConvertSidToStringSidW

gdi32

SelectObject
DeleteObject
CreateFontIndirectW

Sections

.text
Size: 168KB - Virtual size: 167KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 75KB - Virtual size: 74KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 20KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
��k�Yv.pyc
xmmintrin.h

Sharing

General

Malware Config

Signatures

Files

4b5b0fb09f29ed8e5306bbb27b5ae668

Headers

File Characteristics

Imports

advapi32

kernel32

msvcrt

Exports

Exports

Sections

.text Size: 8KB - Virtual size: 8KB

.data Size: 1024B - Virtual size: 992B

.rdata Size: 1024B - Virtual size: 1024B

.pdata Size: 512B - Virtual size: 360B

.xdata Size: 512B - Virtual size: 288B

.bss Size: - Virtual size: 16B

.edata Size: 1024B - Virtual size: 730B

.idata Size: 1024B - Virtual size: 1016B

.reloc Size: 512B - Virtual size: 132B

5c9956100a10f17fd6cacca768f3c364

Code Sign

7e:93:eb:fb:7c:c6:4e:59:ea:4b:9a:77:d4:06:fc:3bCertificate

Extended Key Usages

Key Usages

0e:cf:f4:38:c8:fe:bf:35:6e:04:d8:6a:98:1b:1a:50Certificate

Extended Key Usages

Key Usages

0a:42:f1:e3:68:68:b7:25:06:ea:50:77:bf:7b:bc:5bCertificate

Extended Key Usages

Key Usages

61:20:4d:b4:00:00:00:00:00:27Certificate

Key Usages

02:c4:d1:e5:8a:4a:68:0c:56:8d:a3:04:7e:7e:4d:5fCertificate

Extended Key Usages

Key Usages

97:da:76:ff:9a:56:81:d7:d7:9f:b8:81:15:69:91:15:f6:21:9c:00Signer

Headers

File Characteristics

PDB Paths

Imports

ntoskrnl.exe

ndis.sys

fwpkclnt.sys

wdfldr.sys

Sections

.text Size: 17KB - Virtual size: 16KB

.rdata Size: 5KB - Virtual size: 5KB

.data Size: 1KB - Virtual size: 4KB

.pdata Size: 1024B - Virtual size: 540B

INIT Size: 2KB - Virtual size: 1KB

.rsrc Size: 1024B - Virtual size: 1008B

.reloc Size: 512B - Virtual size: 246B

72c4e339b7af8ab1ed2eb3821c98713a

Headers

DLL Characteristics

File Characteristics

Imports

user32

comctl32

kernel32

advapi32

gdi32

Sections

.text Size: 168KB - Virtual size: 167KB

.rdata Size: 75KB - Virtual size: 74KB

.data Size: 3KB - Virtual size: 20KB

.pdata Size: 9KB - Virtual size: 8KB

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

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

.text
Size: 8KB - Virtual size: 8KB

.data
Size: 1024B - Virtual size: 992B

.rdata
Size: 1024B - Virtual size: 1024B

.pdata
Size: 512B - Virtual size: 360B

.xdata
Size: 512B - Virtual size: 288B

.bss
Size: - Virtual size: 16B

.edata
Size: 1024B - Virtual size: 730B

.idata
Size: 1024B - Virtual size: 1016B

.reloc
Size: 512B - Virtual size: 132B

7e:93:eb:fb:7c:c6:4e:59:ea:4b:9a:77:d4:06:fc:3b
Certificate

0e:cf:f4:38:c8:fe:bf:35:6e:04:d8:6a:98:1b:1a:50
Certificate

0a:42:f1:e3:68:68:b7:25:06:ea:50:77:bf:7b:bc:5b
Certificate

61:20:4d:b4:00:00:00:00:00:27
Certificate

02:c4:d1:e5:8a:4a:68:0c:56:8d:a3:04:7e:7e:4d:5f
Certificate

97:da:76:ff:9a:56:81:d7:d7:9f:b8:81:15:69:91:15:f6:21:9c:00
Signer

.text
Size: 17KB - Virtual size: 16KB

.rdata
Size: 5KB - Virtual size: 5KB

.data
Size: 1KB - Virtual size: 4KB

.pdata
Size: 1024B - Virtual size: 540B

INIT
Size: 2KB - Virtual size: 1KB

.rsrc
Size: 1024B - Virtual size: 1008B

.reloc
Size: 512B - Virtual size: 246B

.text
Size: 168KB - Virtual size: 167KB

.rdata
Size: 75KB - Virtual size: 74KB

.data
Size: 3KB - Virtual size: 20KB

.pdata
Size: 9KB - Virtual size: 8KB

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

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