641a0acf73f7c0ab121ff337b097137dccc1f2218b9cd7264f17af845f6fc1b2

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General

Target

641a0acf73f7c0ab121ff337b097137dccc1f2218b9cd7264f17af845f6fc1b2
Size

2.1MB
MD5

5f9c313a04f101af19d1441b735a2b8d
SHA1

3b392acfc43444a68cbe69fd756f4dfcab7bbc5a
SHA256

641a0acf73f7c0ab121ff337b097137dccc1f2218b9cd7264f17af845f6fc1b2
SHA512

a1275dc887bb523e332dc4fa3301195a85bc94cd4d5e9544263ead018062469c375d6daebf621f7c9e32ce79548aa28881456e9d7fc57c74f496406f99ed8e59
SSDEEP

49152:LIXjw8oQhSzA9rjqar7iCXHT4liha6rMzVtQgq4c:ejaQhSWCsvjWiha68Qj

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
static1/unpack001/$TEMP/BroomSetup.exe	upx

Unsigned PE 5 IoCs

Checks for missing Authenticode signature.

resource
641a0acf73f7c0ab121ff337b097137dccc1f2218b9cd7264f17af845f6fc1b2
unpack001/$PLUGINSDIR/INetC.dll
unpack001/$TEMP/BroomSetup.exe
unpack002/out.upx
unpack001/$TEMP/syncUpd.exe

NSIS installer 1 IoCs

installer

resource	yara_rule
sample	nsis_installer_2

Files

641a0acf73f7c0ab121ff337b097137dccc1f2218b9cd7264f17af845f6fc1b2
.exe windows:4 windows x86 arch:x86

187b3ae62ff818788b8c779ef7bc3d1c

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED

Imports

advapi32

RegCloseKey
RegCreateKeyExA
RegDeleteKeyA
RegDeleteValueA
RegEnumKeyA
RegEnumValueA
RegOpenKeyExA
RegQueryValueExA
RegSetValueExA
SetFileSecurityA

comctl32

ImageList_AddMasked
ImageList_Create
ImageList_Destroy
InitCommonControls

gdi32

CreateBrushIndirect
CreateFontIndirectA
DeleteObject
GetDeviceCaps
SelectObject
SetBkColor
SetBkMode
SetTextColor

kernel32

CloseHandle
CompareFileTime
CopyFileA
CreateDirectoryA
CreateFileA
CreateProcessA
CreateThread
DeleteFileA
ExitProcess
ExpandEnvironmentStringsA
FindClose
FindFirstFileA
FindNextFileA
FreeLibrary
GetCommandLineA
GetCurrentProcess
GetDiskFreeSpaceA
GetExitCodeProcess
GetFileAttributesA
GetFileSize
GetFullPathNameA
GetLastError
GetModuleFileNameA
GetModuleHandleA
GetPrivateProfileStringA
GetProcAddress
GetShortPathNameA
GetSystemDirectoryA
GetTempFileNameA
GetTempPathA
GetTickCount
GetVersion
GetWindowsDirectoryA
GlobalAlloc
GlobalFree
GlobalLock
GlobalUnlock
LoadLibraryExA
MoveFileA
MulDiv
MultiByteToWideChar
ReadFile
RemoveDirectoryA
SearchPathA
SetCurrentDirectoryA
SetErrorMode
SetFileAttributesA
SetFilePointer
SetFileTime
Sleep
WaitForSingleObject
WriteFile
WritePrivateProfileStringA
lstrcatA
lstrcmpA
lstrcmpiA
lstrcpynA
lstrlenA

ole32

CoCreateInstance
CoTaskMemFree
OleInitialize
OleUninitialize

shell32

SHBrowseForFolderA
SHFileOperationA
SHGetFileInfoA
SHGetPathFromIDListA
SHGetSpecialFolderLocation
ShellExecuteA

user32

AppendMenuA
BeginPaint
CallWindowProcA
CharNextA
CharPrevA
CheckDlgButton
CloseClipboard
CreateDialogParamA
CreatePopupMenu
CreateWindowExA
DefWindowProcA
DestroyWindow
DialogBoxParamA
DispatchMessageA
DrawTextA
EmptyClipboard
EnableMenuItem
EnableWindow
EndDialog
EndPaint
ExitWindowsEx
FillRect
FindWindowExA
GetClassInfoA
GetClientRect
GetDC
GetDlgItem
GetDlgItemTextA
GetMessagePos
GetSysColor
GetSystemMenu
GetSystemMetrics
GetWindowLongA
GetWindowRect
InvalidateRect
IsWindow
IsWindowEnabled
IsWindowVisible
LoadBitmapA
LoadCursorA
LoadImageA
MessageBoxIndirectA
OpenClipboard
PeekMessageA
PostQuitMessage
RegisterClassA
ScreenToClient
SendMessageA
SendMessageTimeoutA
SetClassLongA
SetClipboardData
SetCursor
SetDlgItemTextA
SetForegroundWindow
SetTimer
SetWindowLongA
SetWindowPos
SetWindowTextA
ShowWindow
SystemParametersInfoA
TrackPopupMenu
wsprintfA

Sections

.text
Size: 35KB - Virtual size: 34KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 224B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 27KB - Virtual size: 26KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 107KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: 1024B - Virtual size: 36KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 19KB - Virtual size: 18KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
$PLUGINSDIR/INetC.dll
.dll windows:4 windows x86 arch:x86

8e4c63f70f7cc6490634d743e795c93e

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NO_SEH

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

TerminateThread
CreateThread
LocalAlloc
lstrcpyA
WaitForSingleObject
MulDiv
ReadFile
GetModuleHandleA
SleepEx
lstrcatA
GetTickCount
CreateFileA
GetFileSize
DeleteFileA
lstrcmpA
lstrcmpiA
SetFilePointer
WriteFile
GetProcAddress
CloseHandle
lstrlenA
LoadLibraryA
lstrcpynA
LocalFree
GlobalAlloc
GlobalFree
GetLastError
WideCharToMultiByte

user32

LoadIconA
SystemParametersInfoA
GetWindowLongA
GetParent
MessageBoxA
DispatchMessageA
SetWindowLongA
KillTimer
PostMessageA
IsWindow
GetWindowTextA
ShowWindow
SendDlgItemMessageA
TranslateMessage
IsDialogMessageA
CreateDialogParamA
SetDlgItemTextA
GetWindowRect
SetWindowPos
SetTimer
SendMessageA
RedrawWindow
GetClientRect
EnableWindow
FindWindowExA
UpdateWindow
GetMessageA
GetDlgItem
wsprintfA
DestroyWindow
SetWindowTextA
IsWindowVisible

comctl32

ord17

wininet

InternetSetOptionA
InternetQueryOptionA
FtpCreateDirectoryA
InternetConnectA
InternetWriteFile
FtpOpenFileA
InternetSetFilePointer
HttpEndRequestA
HttpAddRequestHeadersA
HttpSendRequestA
InternetGetLastResponseInfoA
InternetOpenA
InternetCrackUrlA
HttpOpenRequestA
HttpSendRequestExA
InternetCloseHandle
InternetReadFile
HttpQueryInfoA
InternetErrorDlg

Exports

Exports

get
head
post
put

Sections

.text
Size: 14KB - Virtual size: 13KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
$TEMP/BroomSetup.exe
.exe windows:5 windows x86 arch:x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

UPX0
Size: - Virtual size: 3.4MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 1.5MB - Virtual size: 1.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 294KB - Virtual size: 296KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:5 windows x86 arch:x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Exports

Exports

TMethodImplementationIntercept
__dbk_fcall_wrapper
dbkFCallWrapperAddr

Sections

.text
Size: 3.6MB - Virtual size: 3.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.itext
Size: 15KB - Virtual size: 14KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 109KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 17KB - Virtual size: 16KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.didata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 151B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: - Virtual size: 76B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 512B - Virtual size: 93B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 283KB - Virtual size: 282KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 815KB - Virtual size: 815KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
$TEMP/file.txt
$TEMP/syncUpd.exe
.exe windows:5 windows x86 arch:x86

5bcbca7050c3640616fc4a9dcedb00c8

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

GetFileSize
GetNumaProcessorNode
GetLocaleInfoA
WriteConsoleOutputCharacterA
SystemTimeToFileTime
CreateJobObjectW
GlobalAlloc
WideCharToMultiByte
LoadLibraryW
GetFileAttributesA
HeapCreate
FreeLibraryAndExitThread
GetLastError
GetCurrentDirectoryW
FindVolumeMountPointClose
HeapSize
LocalLock
SetComputerNameA
BuildCommDCBW
ResetEvent
GetAtomNameA
LoadLibraryA
UnhandledExceptionFilter
InterlockedExchangeAdd
GetFileType
ConvertDefaultLocale
GetModuleFileNameA
VirtualProtect
FindAtomW
GetConsoleProcessList
MultiByteToWideChar
LCMapStringW
HeapReAlloc
GetProcAddress
GetModuleHandleW
ExitProcess
DecodePointer
GetCommandLineA
HeapSetInformation
GetStartupInfoW
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
IsDebuggerPresent
HeapAlloc
EncodePointer
HeapFree
InitializeCriticalSectionAndSpinCount
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
InterlockedIncrement
SetLastError
GetCurrentThreadId
InterlockedDecrement
WriteFile
GetStdHandle
GetModuleFileNameW
FreeEnvironmentStringsW
GetEnvironmentStringsW
SetHandleCount
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
GetSystemTimeAsFileTime
Sleep
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
RtlUnwind
IsProcessorFeaturePresent
GetStringTypeW

user32

GetMonitorInfoA

Sections

.text
Size: 18KB - Virtual size: 18KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 120KB - Virtual size: 119KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 9KB - Virtual size: 253KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 88KB - Virtual size: 1.8MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

187b3ae62ff818788b8c779ef7bc3d1c

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

comctl32

gdi32

kernel32

ole32

shell32

user32

Sections

.text Size: 35KB - Virtual size: 34KB

.data Size: 512B - Virtual size: 224B

.rdata Size: 27KB - Virtual size: 26KB

.bss Size: - Virtual size: 107KB

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

.ndata Size: 1024B - Virtual size: 36KB

.rsrc Size: 19KB - Virtual size: 18KB

8e4c63f70f7cc6490634d743e795c93e

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

comctl32

wininet

Exports

Exports

Sections

.text Size: 14KB - Virtual size: 13KB

.data Size: 2KB - Virtual size: 15KB

.rsrc Size: 2KB - Virtual size: 2KB

.reloc Size: 2KB - Virtual size: 1KB

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 3.4MB

UPX1 Size: 1.5MB - Virtual size: 1.5MB

.rsrc Size: 294KB - Virtual size: 296KB

Headers

File Characteristics

Exports

Exports

Sections

.text Size: 3.6MB - Virtual size: 3.6MB

.itext Size: 15KB - Virtual size: 14KB

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

.bss Size: - Virtual size: 109KB

.idata Size: 17KB - Virtual size: 16KB

.didata Size: 3KB - Virtual size: 2KB

.edata Size: 512B - Virtual size: 151B

.tls Size: - Virtual size: 76B

.rdata Size: 512B - Virtual size: 93B

.reloc Size: 283KB - Virtual size: 282KB

.rsrc Size: 815KB - Virtual size: 815KB

5bcbca7050c3640616fc4a9dcedb00c8

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

Sections

.text Size: 18KB - Virtual size: 18KB

.rdata Size: 120KB - Virtual size: 119KB

.data Size: 9KB - Virtual size: 253KB

.rsrc Size: 88KB - Virtual size: 1.8MB

.text
Size: 35KB - Virtual size: 34KB

.data
Size: 512B - Virtual size: 224B

.rdata
Size: 27KB - Virtual size: 26KB

.bss
Size: - Virtual size: 107KB

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

.ndata
Size: 1024B - Virtual size: 36KB

.rsrc
Size: 19KB - Virtual size: 18KB

.text
Size: 14KB - Virtual size: 13KB

.data
Size: 2KB - Virtual size: 15KB

.rsrc
Size: 2KB - Virtual size: 2KB

.reloc
Size: 2KB - Virtual size: 1KB

UPX0
Size: - Virtual size: 3.4MB

UPX1
Size: 1.5MB - Virtual size: 1.5MB

.rsrc
Size: 294KB - Virtual size: 296KB

.text
Size: 3.6MB - Virtual size: 3.6MB

.itext
Size: 15KB - Virtual size: 14KB

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

.bss
Size: - Virtual size: 109KB

.idata
Size: 17KB - Virtual size: 16KB

.didata
Size: 3KB - Virtual size: 2KB

.edata
Size: 512B - Virtual size: 151B

.tls
Size: - Virtual size: 76B

.rdata
Size: 512B - Virtual size: 93B

.reloc
Size: 283KB - Virtual size: 282KB

.rsrc
Size: 815KB - Virtual size: 815KB

.text
Size: 18KB - Virtual size: 18KB

.rdata
Size: 120KB - Virtual size: 119KB

.data
Size: 9KB - Virtual size: 253KB

.rsrc
Size: 88KB - Virtual size: 1.8MB