Static task
static1
Behavioral task
behavioral1
Sample
gost-windows-amd64.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
gost-windows-amd64.exe
Resource
win10v2004-20220812-en
General
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Target
gost-windows-amd64.exe
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Size
11.5MB
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MD5
a3f917aa320c7cbe9e551c8c7491c3b6
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SHA1
3bfe158aaf463379d869e99e779092f5abffd003
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SHA256
1f0f654829c46b035b19a9fc73e558bdf75aa446155a7ca6943fc3a476bf586f
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SHA512
3aefd62e7a609039bf3aa3c69e196a1829e7fe79ed96c2fa9316c44345b6535f8cf4b0d66187cbc9b946bbc4d2c17bec0bb89147619d6bae19e6f2ee2926bbb6
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SSDEEP
98304:k3z3mhS7wBBSp4Z28XDXVJE7Ut8yD2F04:E7ySksp4ZcuJD2FX
Malware Config
Signatures
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Detects GOST tunneling tool 1 IoCs
A simple tunneling tool written in Golang
Processes:
resource yara_rule sample Gost
Files
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gost-windows-amd64.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: 5.7MB - Virtual size: 5.7MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 5.2MB - Virtual size: 5.2MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 475KB - Virtual size: 948KB
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: 99KB - Virtual size: 99KB
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