Static task
static1
Behavioral task
behavioral1
Sample
gost.exe
Resource
win10v2004-20230220-en
General
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Target
gost.exe
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Size
11.8MB
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MD5
c1054983c8427f1e3871b8144169c62d
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SHA1
47391ba15dd7cbe63cd9a35c5568b31863c6d553
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SHA256
6c011974721708fdf4eaee28afd5fc636090770826207b1166e566d6031a4c40
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SHA512
2cfe6544e3be76939f441e60ee2ac2451cc9131ae167d5eb3573b8af364796b9a9926108df413bed5cdb463ad739133a089741b3b00b77d2f78c054c3e5652df
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SSDEEP
98304:vzhHKUwrpMECH8D0Pfm/yAgNaVDImETLOP6P7W/lLVXT1:v1rwrnCcoPZ+DIDTLOiPalLVJ
Malware Config
Signatures
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Detects GOST tunneling tool 1 IoCs
A simple tunneling tool written in Golang
resource yara_rule sample Gost -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource gost.exe
Files
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gost.exe.exe windows x64
ff9f3a86709796c17211f9df12aae74d
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_DEBUG_STRIPPED
Imports
kernel32
WriteFile
WriteConsoleW
WaitForMultipleObjects
WaitForSingleObject
VirtualQuery
VirtualFree
VirtualAlloc
SwitchToThread
SuspendThread
SetWaitableTimer
SetUnhandledExceptionFilter
SetThreadPriority
SetProcessPriorityBoost
SetEvent
SetErrorMode
SetConsoleCtrlHandler
ResumeThread
PostQueuedCompletionStatus
LoadLibraryA
LoadLibraryW
SetThreadContext
GetThreadContext
GetSystemInfo
GetSystemDirectoryA
GetStdHandle
GetQueuedCompletionStatusEx
GetProcessAffinityMask
GetProcAddress
GetEnvironmentStringsW
GetConsoleMode
FreeEnvironmentStringsW
ExitProcess
DuplicateHandle
CreateWaitableTimerExW
CreateWaitableTimerA
CreateThread
CreateIoCompletionPort
CreateFileA
CreateEventA
CloseHandle
AddVectoredExceptionHandler
Sections
.text Size: 5.9MB - Virtual size: 5.9MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 5.4MB - Virtual size: 5.4MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 446KB - Virtual size: 950KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 104KB - Virtual size: 104KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.symtab Size: 512B - Virtual size: 4B
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ