cobaltstrike | b2cd317ebfcda79dd768939ff1fea345345d9c209045ec60d37d72107c4fdcdf[.]zip

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General

Target

b2cd317ebfcda79dd768939ff1fea345345d9c209045ec60d37d72107c4fdcdf.zip
Size

113KB
MD5

fe6a38a9a346ffc217dffeadf78f6388
SHA1

7fbcd969a34f58178b200972780183b92a9aaa3a
SHA256

9bf4078141116cfda866da1f5bba2b75acd28ba5520ef149646862d6d0efd48b
SHA512

c8276405cb2604e366449ee542b418eaa391ea5e04562d73283003c401e053125765dd582f1bcab8ca6570ff59cacb8dfc6781e7042b1dc8cf3131b085f37fb4
SSDEEP

3072:8j+6DemACtIOEtyy7SnYBOBbQr+mm9hQFejEFqPiUM2WHD5:2p6C25tnRvmXQcEAaUMZHD5

Score

10^/10

cobaltstrike

Malware Config

Signatures

Cobalt Strike reflective loader 1 IoCs

Detects the reflective loader used by Cobalt Strike.

resource	yara_rule
static1/unpack001/b2cd317ebfcda79dd768939ff1fea345345d9c209045ec60d37d72107c4fdcdf	cobalt_reflective_dll

Cobaltstrike family
cobaltstrike

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/b2cd317ebfcda79dd768939ff1fea345345d9c209045ec60d37d72107c4fdcdf

Files

b2cd317ebfcda79dd768939ff1fea345345d9c209045ec60d37d72107c4fdcdf.zip
.zip

Password: infected
b2cd317ebfcda79dd768939ff1fea345345d9c209045ec60d37d72107c4fdcdf
.dll windows:5 windows x86 arch:x86

Password: infected

cef0a8b67e0adea9dbc532568c79bb24

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

GetThreadContext
ReadProcessMemory
CreateProcessA
TerminateProcess
GetCurrentDirectoryW
VirtualProtectEx
WriteProcessMemory
ResumeThread
GetFullPathNameA
SystemTimeToTzSpecificLocalTime
GetLogicalDrives
ExpandEnvironmentStringsA
GetFileAttributesA
FileTimeToSystemTime
FindFirstFileA
CopyFileA
FindClose
MoveFileA
FindNextFileA
OpenProcess
GetCurrentProcessId
Thread32First
Thread32Next
VirtualAllocEx
OpenThread
CreateToolhelp32Snapshot
CreateThread
CreateRemoteThread
SetThreadContext
MapViewOfFile
UnmapViewOfFile
CreateFileMappingA
VirtualProtect
SetLastError
GetVersionExA
CreateFileA
PeekNamedPipe
WaitNamedPipeA
SetNamedPipeHandleState
GetComputerNameA
GetACP
GetModuleFileNameA
GetOEMCP
DeleteProcThreadAttributeList
HeapAlloc
CreateNamedPipeA
GetProcessHeap
InitializeProcThreadAttributeList
SetErrorMode
UpdateProcThreadAttribute
ProcessIdToSessionId
DuplicateHandle
Process32First
Process32Next
VirtualQuery
ExitProcess
ExitThread
ReadFile
GetCurrentThread
ConnectNamedPipe
GetCurrentProcess
CloseHandle
GetCurrentDirectoryA
CreatePipe
GetLocalTime
GetLastError
GetStartupInfoA
SetCurrentDirectoryA
FlushFileBuffers
DisconnectNamedPipe
MultiByteToWideChar
WriteFile
GetTickCount
WaitForSingleObject
Sleep
GetModuleHandleA
DebugBreak
RaiseException
SetEnvironmentVariableW
GetModuleFileNameW
LoadLibraryA
VirtualAlloc
GetProcAddress
SetEnvironmentVariableA
CompareStringW
CompareStringA
SetEndOfFile
GetStringTypeW
GetStringTypeA
LCMapStringW
LCMapStringA
SetStdHandle
WriteConsoleW
GetConsoleOutputCP
WriteConsoleA
GetLocaleInfoA
HeapSize
IsValidCodePage
GetCPInfo
QueryPerformanceCounter
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetEnvironmentStrings
FreeEnvironmentStringsA
SetFilePointer
VirtualFree
HeapFree
FreeLibrary
GetModuleHandleW
DeleteFileA
CreateDirectoryA
RemoveDirectoryA
GetSystemTimeAsFileTime
HeapReAlloc
GetCurrentThreadId
GetCommandLineA
HeapCreate
HeapDestroy
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
GetStdHandle
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
InterlockedDecrement
InitializeCriticalSectionAndSpinCount
RtlUnwind
WideCharToMultiByte
GetConsoleCP
GetConsoleMode
SetHandleCount
GetFileType

advapi32

LookupAccountSidA
OpenThreadToken
CryptReleaseContext
CryptAcquireContextA
CryptGenRandom
LogonUserA
CheckTokenMembership
FreeSid
RevertToSelf
AllocateAndInitializeSid
DuplicateTokenEx
OpenProcessToken
GetTokenInformation
GetUserNameA
CreateProcessWithTokenW
CreateProcessWithLogonW
CreateProcessAsUserA
AdjustTokenPrivileges
ImpersonateNamedPipeClient
ImpersonateLoggedOnUser
LookupPrivilegeValueA

wininet

InternetSetOptionA
InternetConnectA
InternetQueryDataAvailable
InternetReadFile
HttpOpenRequestA
HttpAddRequestHeadersA
InternetSetStatusCallback
HttpSendRequestA
InternetOpenA
InternetCloseHandle
InternetQueryOptionA
HttpQueryInfoA

ws2_32

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

Exports

Exports

_ReflectiveLoader@4

Sections

.text
Size: 152KB - Virtual size: 152KB

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: 44KB - Virtual size: 44KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Password: infected

Password: infected

cef0a8b67e0adea9dbc532568c79bb24

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

wininet

ws2_32

Exports

Exports

Sections

.text Size: 152KB - Virtual size: 152KB

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

.data Size: 44KB - Virtual size: 44KB

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

.text
Size: 152KB - Virtual size: 152KB

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

.data
Size: 44KB - Virtual size: 44KB

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