winhttp[.]dll | Triage

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General

Target

winhttp.dll
Size

337KB
MD5

e0397c9ea883ac5d5ed1f8208e3c7d34
SHA1

f2af57404ea9291f201e5223d2165c24f21b04ac
SHA256

6a0bf9684063708d516ee858d6f65222b30e178b0544411fbb43f5e1f5c3e615
SHA512

5b7abac0400260672a92e1b4481bff2e2236cf8352b9f3e33464da8f7b0d5f706893c25d1d4372b82ea5716a4cc3d3d08ae422cab258b5adf8721988359b0451
SSDEEP

3072:Obi8Mzv9wxI2yEV3wz+ra/LfOe3IiwRsM9mNoJI9izUuOvd5F+uz8:Obih1emexrgLWgMYOJ1OvdY

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
winhttp.dll

Files

winhttp.dll
.dll windows:6 windows x64 arch:x64

09b0a2a9abe3aef989ac6ab2c8d1db01

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

Imports

kernel32

OutputDebugStringA
GetCurrentProcess
ExitProcess
GetSystemDirectoryA
FreeLibrary
GetModuleHandleA
GetProcAddress
LoadLibraryA
K32GetModuleInformation
CreateFileA
SetFilePointerEx
WriteFile
CloseHandle
GetLastError
VirtualAlloc
VirtualProtect
VirtualFree
VirtualQuery
GetModuleHandleExW
FormatMessageA
K32GetMappedFileNameA
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
IsProcessorFeaturePresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
CreateEventW
WaitForSingleObjectEx
ResetEvent
SetEvent
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
LeaveCriticalSection
EnterCriticalSection
WideCharToMultiByte
MultiByteToWideChar
GetModuleHandleW
SetLastError
AreFileApisANSI
GetFileInformationByHandle
GetFileAttributesExW
FindNextFileW
FindFirstFileExW
FindClose
CreateFileW
GetCurrentDirectoryW
InitializeSListHead

msvcp140

?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
_Thrd_id
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Execute_once@std@@YAHAEAUonce_flag@1@P6AHPEAX1PEAPEAX@Z1@Z
??0_Lockit@std@@QEAA@H@Z
??1_Lockit@std@@QEAA@XZ
?_Xlength_error@std@@YAXPEBD@Z
?_Xout_of_range@std@@YAXPEBD@Z
?_Xbad_function_call@std@@YAXXZ
??Bid@locale@std@@QEAA_KXZ
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
?always_noconv@codecvt_base@std@@QEBA_NXZ
?in@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?write@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEBD_J@Z
?_Syserror_map@std@@YAPEBDH@Z
?_Winerror_map@std@@YAHH@Z
?_Winerror_message@std@@YAKKPEADK@Z
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
?_Pninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
??0?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
?_Fiopen@std@@YAPEAU_iobuf@@PEB_WHH@Z

vcruntime140

__std_type_info_destroy_list
__C_specific_handler
memset
memmove
memcpy
__std_terminate
wcsstr
__std_exception_copy
memcmp
memchr
__CxxFrameHandler3
_CxxThrowException
__std_exception_destroy

api-ms-win-crt-runtime-l1-1-0

_register_onexit_function
_initialize_onexit_table
_initialize_narrow_environment
_configure_narrow_argv
_seh_filter_dll
_cexit
_execute_onexit_table
_initterm
_initterm_e
_invalid_parameter_noinfo_noreturn
terminate
_crt_atexit

api-ms-win-crt-heap-l1-1-0

malloc
free
_callnewh

api-ms-win-crt-convert-l1-1-0

strtol

api-ms-win-crt-stdio-l1-1-0

ungetc
fwrite
_fseeki64
fsetpos
fread
fputc
fgetpos
fflush
fclose
_get_stream_buffer_pointers
__stdio_common_vfprintf
__acrt_iob_func
fgetc
setvbuf

api-ms-win-crt-filesystem-l1-1-0

_lock_file
_unlock_file

api-ms-win-crt-string-l1-1-0

strcat_s

api-ms-win-crt-locale-l1-1-0

___lc_codepage_func

Exports

Exports

WinHttpAddRequestHeaders
WinHttpAutoProxySvcMain
WinHttpCheckPlatform
WinHttpCloseHandle
WinHttpConnect
WinHttpConnectionDeleteProxyInfo
WinHttpConnectionFreeNameList
WinHttpConnectionFreeProxyInfo
WinHttpConnectionFreeProxyList
WinHttpConnectionGetNameList
WinHttpConnectionGetProxyInfo
WinHttpConnectionGetProxyList
WinHttpConnectionSetProxyInfo
WinHttpCrackUrl
WinHttpCreateProxyResolver
WinHttpCreateUrl
WinHttpDetectAutoProxyConfigUrl
WinHttpFreeProxyResult
WinHttpGetDefaultProxyConfiguration
WinHttpGetIEProxyConfigForCurrentUser
WinHttpGetProxyForUrl
WinHttpGetProxyForUrlEx
WinHttpGetProxyResult
WinHttpGetTunnelSocket
WinHttpOpen
WinHttpOpenRequest
WinHttpProbeConnectivity
WinHttpQueryAuthSchemes
WinHttpQueryDataAvailable
WinHttpQueryHeaders
WinHttpQueryOption
WinHttpReadData
WinHttpReceiveResponse
WinHttpResetAutoProxy
WinHttpSaveProxyCredentials
WinHttpSendRequest
WinHttpSetCredentials
WinHttpSetDefaultProxyConfiguration
WinHttpSetOption
WinHttpSetStatusCallback
WinHttpSetTimeouts
WinHttpTimeFromSystemTime
WinHttpTimeToSystemTime
WinHttpWebSocketClose
WinHttpWebSocketCompleteUpgrade
WinHttpWebSocketQueryCloseStatus
WinHttpWebSocketReceive
WinHttpWebSocketSend
WinHttpWebSocketShutdown
WinHttpWriteData
funchook_create
funchook_destroy
funchook_error_message
funchook_install
funchook_prepare
funchook_set_debug_file
funchook_uninstall

Sections

.text
Size: 156KB - Virtual size: 156KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 66KB - Virtual size: 65KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 104KB - Virtual size: 106KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 512B - Virtual size: 480B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 964B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

09b0a2a9abe3aef989ac6ab2c8d1db01

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

msvcp140

vcruntime140

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-filesystem-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-locale-l1-1-0

Exports

Exports

Sections

.text Size: 156KB - Virtual size: 156KB

.rdata Size: 66KB - Virtual size: 65KB

.data Size: 104KB - Virtual size: 106KB

.pdata Size: 8KB - Virtual size: 7KB

.rsrc Size: 512B - Virtual size: 480B

.reloc Size: 1024B - Virtual size: 964B

.text
Size: 156KB - Virtual size: 156KB

.rdata
Size: 66KB - Virtual size: 65KB

.data
Size: 104KB - Virtual size: 106KB

.pdata
Size: 8KB - Virtual size: 7KB

.rsrc
Size: 512B - Virtual size: 480B

.reloc
Size: 1024B - Virtual size: 964B