colbact[.]dll | Triage

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General

Target

colbact.dll
Size

66KB
MD5

fa3e9207dade6de7cfe8d27d6b01d444
SHA1

800ae96335d1413344f77ddbbfe6b9af8b2c6094
SHA256

33b3f7de4039283628acc5617e63272572e864c57b76c26ca78b4f0779ea236a
SHA512

8c96514aa5b9777be8bd16fe52e4effd33652ddfa684ddc2c3a292158df47c043b3fc380859b28948e45d00a3b162c6fe547abbe0b7b961c810fc68ca97a5fcb
SSDEEP

1536:d26fKPs7w+j1xlgsTuakRkVpg7T8a5OcYVWtJhYOKSm8zsgZU1of:hTC3RkPg7TTELEJhYOrm8zsmU1I

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
colbact.dll

Files

colbact.dll
.dll regsvr32 windows:10 windows x86 arch:x86

8f94f81611dc3779b846132c63009a90

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

colbact.pdb

Imports

msvcrt

_ftol2
_local_unwind4
floor
memcmp
?terminate@@YAXXZ
time
rand
srand
wcsrchr
_waccess
_vsnwprintf
__CxxFrameHandler3
memcpy
_onexit
__dllonexit
_unlock
_lock
_except_handler4_common
_initterm
malloc
free
_amsg_exit
_XcptFilter
_wcsicmp
_CIfmod
memset

api-ms-win-core-registry-l1-1-0

RegCreateKeyExW
RegDeleteKeyExW
RegNotifyChangeKeyValue
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
RegSetValueExW

api-ms-win-core-com-l1-1-0

CLSIDFromString
StringFromGUID2
CoCreateInstance
CoGetObjectContext
CoTaskMemFree
CoTaskMemAlloc

api-ms-win-core-libraryloader-l1-2-0

GetModuleFileNameW
LoadLibraryExW
LockResource
LoadResource
FreeLibrary
FindResourceExW
DisableThreadLibraryCalls
GetModuleHandleW
GetProcAddress
LoadStringW

api-ms-win-core-synch-l1-1-0

ReleaseMutex
SetEvent
DeleteCriticalSection
ReleaseSemaphore
OpenMutexW
InitializeCriticalSectionAndSpinCount
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSection
CreateEventW
WaitForSingleObject
CreateSemaphoreExW

rpcrt4

RpcStringFreeW
RpcRevertToSelf
RpcImpersonateClient
UuidToStringW

api-ms-win-core-processthreads-l1-1-0

GetExitCodeProcess
GetCurrentProcess
TlsFree
GetCurrentProcessId
GetCurrentThreadId
TerminateProcess
OpenThreadToken
SetThreadToken
TlsGetValue
TlsAlloc
CreateProcessW
GetCurrentThread
CreateThread
TlsSetValue
SetThreadStackGuarantee
OpenProcessToken

api-ms-win-core-debug-l1-1-0

DebugBreak
IsDebuggerPresent
OutputDebugStringA
OutputDebugStringW

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetLastError

api-ms-win-core-handle-l1-1-0

CloseHandle

api-ms-win-core-sysinfo-l1-1-0

GetLocalTime
GetTickCount
GetSystemInfo
GetSystemTimeAsFileTime

api-ms-win-security-base-l1-1-0

DuplicateToken
FreeSid
GetLengthSid
GetTokenInformation
GetSidLengthRequired
AllocateAndInitializeSid
CopySid
EqualSid
IsValidSid
InitializeSid

api-ms-win-core-heap-l2-1-0

LocalAlloc
LocalFree

api-ms-win-core-synch-l1-2-0

Sleep

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

ntdll

RtlAllocateHeap
RtlImageNtHeader
RtlFreeHeap

api-ms-win-core-file-l1-1-0

FindClose
CreateDirectoryW
FindFirstFileW
SetFileAttributesW
DeleteFileW
CompareFileTime
FindNextFileW

api-ms-win-core-processenvironment-l1-1-0

ExpandEnvironmentStringsW

api-ms-win-core-version-l1-1-0

VerQueryValueW

api-ms-win-core-localization-l1-2-0

FormatMessageW

api-ms-win-core-memory-l1-1-0

OpenFileMappingW
MapViewOfFile
VirtualAlloc
VirtualProtect
VirtualQuery

api-ms-win-core-delayload-l1-1-1

ResolveDelayLoadedAPI

api-ms-win-core-delayload-l1-1-0

DelayLoadFailureHook

Exports

Exports

DllGetClassObject
DllRegisterServer
DllUnregisterServer
GetClassInfoForCurrentUser
GetDefaultPartitionForCurrentUser
GetDefaultPartitionForSid
PartitionAccessCheck

Sections

.text
Size: 54KB - Virtual size: 54KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 76B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 992B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8f94f81611dc3779b846132c63009a90

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

api-ms-win-core-registry-l1-1-0

api-ms-win-core-com-l1-1-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-synch-l1-1-0

rpcrt4

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-debug-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-handle-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-security-base-l1-1-0

api-ms-win-core-heap-l2-1-0

api-ms-win-core-synch-l1-2-0

api-ms-win-core-profile-l1-1-0

ntdll

api-ms-win-core-file-l1-1-0

api-ms-win-core-processenvironment-l1-1-0

api-ms-win-core-version-l1-1-0

api-ms-win-core-localization-l1-2-0

api-ms-win-core-memory-l1-1-0

api-ms-win-core-delayload-l1-1-1

api-ms-win-core-delayload-l1-1-0

Exports

Exports

Sections

.text Size: 54KB - Virtual size: 54KB

.data Size: 512B - Virtual size: 8KB

.idata Size: 5KB - Virtual size: 4KB

.didat Size: 512B - Virtual size: 76B

.rsrc Size: 1024B - Virtual size: 992B

.reloc Size: 3KB - Virtual size: 3KB

.text
Size: 54KB - Virtual size: 54KB

.data
Size: 512B - Virtual size: 8KB

.idata
Size: 5KB - Virtual size: 4KB

.didat
Size: 512B - Virtual size: 76B

.rsrc
Size: 1024B - Virtual size: 992B

.reloc
Size: 3KB - Virtual size: 3KB