cobaltstrike | 81052b8fb2fb3a7efa599e943f1ccb73_cobalt-strike_cobaltstrike_meterpreter_JC[.]exe

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General

Target

81052b8fb2fb3a7efa599e943f1ccb73_cobalt-strike_cobaltstrike_meterpreter_JC.exe
Size

207KB
MD5

81052b8fb2fb3a7efa599e943f1ccb73
SHA1

7da797ecd858dcfd2cf561c7e1a64d0058602bba
SHA256

dd5240351c3315a74890fe08cdb14e69e28fe7c9febb73d5ff3d20380841a139
SHA512

3a58d21e1df78d42deccde60e9b42d5dd1c4055971cb0caabca0c66d5e57e3e1cb34aac5b93c7b32d1218cf431fd8c807390c24d8fcfacc82ee0adb9df74f4e5
SSDEEP

3072:+AXQdWb/0gkU+DY/eij60ST4tf4xCR8/fvRyfhrhgkdnOf6j5Uz5o:+nMQsGiGu18/fpcjnOCjx

Score

10^/10

cobaltstrike

Malware Config

Signatures

Cobalt Strike reflective loader 1 IoCs

Detects the reflective loader used by Cobalt Strike.

resource	yara_rule
sample	cobalt_reflective_dll

Cobaltstrike family
cobaltstrike

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
81052b8fb2fb3a7efa599e943f1ccb73_cobalt-strike_cobaltstrike_meterpreter_JC.exe

Files

81052b8fb2fb3a7efa599e943f1ccb73_cobalt-strike_cobaltstrike_meterpreter_JC.exe
.dll windows x86

44d309e36559224e3a1493ec79ab73cc

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
IMAGE_FILE_BYTES_REVERSED_HI

Imports

kernel32

FindClose
MoveFileA
FindNextFileA
VirtualProtect
DeleteProcThreadAttributeList
HeapAlloc
UpdateProcThreadAttribute
HeapFree
GetProcessHeap
CreateRemoteThread
VirtualAlloc
VirtualAllocEx
LoadLibraryA
ProcessIdToSessionId
DuplicateHandle
InitializeProcThreadAttributeList
GetCurrentProcessId
CreateThread

FreeLibrary
VirtualFree
Thread32First
Thread32Next
SetLastError
OpenThread
CreateToolhelp32Snapshot
GetVersionExA
SuspendThread
PeekNamedPipe
WaitNamedPipeA
SetNamedPipeHandleState
LocalAlloc
LocalFree
GetComputerNameA
GetACP
CopyFileA
Process32First
Process32Next
ExitProcess
FindFirstFileA
FileTimeToSystemTime
GetFileAttributesA
ExpandEnvironmentStringsA
GetLogicalDrives
SystemTimeToTzSpecificLocalTime
GetFullPathNameA
ResumeThread
WriteProcessMemory
VirtualProtectEx
TerminateProcess
CreateProcessA
ReadProcessMemory
GetThreadContext
GetModuleHandleA
CreateNamedPipeA
GetProcAddress
ReadFile
GetCurrentThread
ConnectNamedPipe
GetCurrentProcess
CloseHandle
GetFileTime
GetCurrentDirectoryA
CreatePipe
GetLocalTime
GetCurrentDirectoryW
GetLastError
GetStartupInfoA
SetCurrentDirectoryA
FlushFileBuffers
DisconnectNamedPipe
MultiByteToWideChar
VirtualQuery
GetModuleFileNameW
DebugBreak
RaiseException
SetEnvironmentVariableW
OpenProcess
WriteFile
SetFileTime
SetEnvironmentVariableA
CompareStringW
CompareStringA
SetEndOfFile
GetStringTypeW
GetStringTypeA
LCMapStringW
LCMapStringA
SetStdHandle
WriteConsoleW
GetConsoleOutputCP
WriteConsoleA
GetLocaleInfoA
HeapSize
IsValidCodePage
GetCPInfo
GetSystemTimeAsFileTime
QueryPerformanceCounter
GetTickCount
WaitForSingleObject
CreateFileA
Sleep
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetEnvironmentStrings
FreeEnvironmentStringsA
GetModuleHandleW
DeleteFileA
CreateDirectoryA
RemoveDirectoryA
GetCurrentThreadId
GetCommandLineA
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
HeapCreate
HeapDestroy
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
HeapReAlloc
GetStdHandle
GetModuleFileNameA
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
InterlockedDecrement
InitializeCriticalSectionAndSpinCount
RtlUnwind
WideCharToMultiByte
GetConsoleCP
GetConsoleMode
SetHandleCount
GetFileType
SetFilePointer

advapi32

RegOpenCurrentUser
OpenProcessToken
CreateProcessWithLogonW
DeleteService
CreateServiceA
CryptReleaseContext
CryptAcquireContextA
CryptGenRandom
LogonUserA
CheckTokenMembership
FreeSid
RevertToSelf
AllocateAndInitializeSid
DuplicateTokenEx
LookupAccountSidA
GetTokenInformation
RegCloseKey
RegEnumKeyA
RegEnumValueA
CloseServiceHandle
RegOpenKeyExA
GetUserNameA
CreateProcessWithTokenW
CreateProcessAsUserA
AdjustTokenPrivileges
ControlService
QueryServiceStatusEx
ImpersonateNamedPipeClient
ImpersonateLoggedOnUser
LookupPrivilegeValueA
OpenThreadToken
OpenServiceA
OpenSCManagerA
QueryServiceStatus
StartServiceA

wininet

InternetConnectA
InternetQueryDataAvailable
InternetReadFile
InternetSetOptionA
HttpOpenRequestA
HttpSendRequestA
InternetOpenA
InternetCloseHandle
InternetQueryOptionA
HttpQueryInfoA

ws2_32

connect
htons
socket
closesocket
ntohs
gethostname
inet_ntoa
WSAStartup
WSACleanup
gethostbyname
htonl
ntohl
recv
shutdown
WSAGetLastError
ioctlsocket
accept
listen
__WSAFDIsSet
bind
select
send

dnsapi

DnsFree
DnsQuery_A

iphlpapi

GetIfEntry
GetIpAddrTable

secur32

LsaCallAuthenticationPackage
LsaConnectUntrusted
LsaLookupAuthenticationPackage

Exports

Exports

_ReflectiveLoader@4

Sections

.text
Size: 149KB - Virtual size: 148KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 40KB - Virtual size: 40KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 9KB - Virtual size: 64KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

44d309e36559224e3a1493ec79ab73cc

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

wininet

ws2_32

dnsapi

iphlpapi

secur32

Exports

Exports

Sections

.text Size: 149KB - Virtual size: 148KB

.rdata Size: 40KB - Virtual size: 40KB

.data Size: 9KB - Virtual size: 64KB

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

.text
Size: 149KB - Virtual size: 148KB

.rdata
Size: 40KB - Virtual size: 40KB

.data
Size: 9KB - Virtual size: 64KB

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