2024-05-04_243080b219885a443445437938e3be64_avoslocker

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General

Target

2024-05-04_243080b219885a443445437938e3be64_avoslocker
Size

2.2MB
MD5

243080b219885a443445437938e3be64
SHA1

925b50bdb622f90679bfbc4ee852cb5350e97077
SHA256

551780843b67abdcb24832c70708a18c800aa95b40087e45c3aa117d0b0ba8d7
SHA512

daa0e4c0ee87fb5e4b19e2166e011ababd8f15b7605b2cec413283e8676ff1f85f1b2109cc288b3ef0d1e7000a3134d04f0476fd952ba538a450ec06077e9232
SSDEEP

49152:u852fwmo6XBycOmoA+DuER/+96hlBVoj7vCm/LgdOjAHbh+Y556OtyKcyL76:u8Iwm3RyFm5+DxR/2MlBVoj7qm/LgdO/

Score

10^/10

Malware Config

Signatures

Detects executables packed with Silent Install Builder 1 IoCs

resource	yara_rule
sample	INDICATOR_EXE_Packed_SilentInstallBuilder

Files

2024-05-04_243080b219885a443445437938e3be64_avoslocker
.exe windows:6 windows x86 arch:x86

1f29cf427ce43f8454305f6fa29554e7

Code Sign

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16
Certificate

Issuer

CN=AAA Certificate Services,O=Comodo CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

25-05-2021 00:00

Not After

31-12-2028 23:59

Subject

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6e
Certificate

Issuer

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

Not Before

22-03-2021 00:00

Not After

21-03-2036 23:59

Subject

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

de:de:0a:82:be:71:23:b3:ee:db:10:4f:8a:3a:ca:1c
Certificate

Issuer

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

Not Before

26-09-2022 00:00

Not After

25-09-2024 23:59

Subject

SERIALNUMBER=6737676000,CN=APREL Tehnologija d.o.o.,O=APREL Tehnologija d.o.o.,ST=Ljubljana,C=SI,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13025349

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Certificate

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Not Before

14-07-2023 00:00

Not After

13-10-2034 23:59

Subject

CN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

23-03-2022 00:00

Not After

22-03-2037 23:59

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

01-08-2022 00:00

Not After

09-11-2031 23:59

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

73:6c:e5:6e:c4:1e:66:09:39:4c:7e:6b:e6:8c:88:1b:bd:ed:5a:70
Signer

Actual PE Digest

73:6c:e5:6e:c4:1e:66:09:39:4c:7e:6b:e6:8c:88:1b:bd:ed:5a:70

Digest Algorithm

sha1

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

D:\apreltech\Sib\Sibl\Release\Sibuia.pdb

Imports

kernel32

GetOEMCP
GetACP
IsValidCodePage
FindFirstFileExW
ReadConsoleW
GetTimeZoneInformation
SetFilePointerEx
GetConsoleMode
GetConsoleCP
EnumSystemLocalesW
IsValidLocale
GetStdHandle
ExitProcess
SetStdHandle
QueryPerformanceFrequency
VirtualQuery
GetSystemInfo
GetCommandLineW
GetCommandLineA
HeapQueryInformation
GetModuleHandleExW
FreeLibraryAndExitThread
FreeEnvironmentStringsW
GetFileType
GetDriveTypeW
RtlUnwind
GetCPInfo
GetStringTypeW
LCMapStringEx
LCMapStringW
lstrlenW
MoveFileExW
FindNextFileW
RemoveDirectoryW
CreateDirectoryW
RaiseException
OutputDebugStringW
GetEnvironmentStringsW
SetEnvironmentVariableW
WriteConsoleW
SetCurrentDirectoryW
DeleteFileW
ReadFile
SetFileAttributesW
SetFileTime
CloseHandle
DuplicateHandle
GetLastError
WaitForSingleObject
Sleep
GetCurrentProcess
TerminateProcess
GetExitCodeProcess
GetCurrentThreadId
CreateProcessW
CreateJobObjectW
AssignProcessToJobObject
SetInformationJobObject
GetModuleFileNameW
GetModuleHandleW
GetProcAddress
LoadResource
LockResource
SizeofResource
FindResourceW
CopyFileW
MulDiv
MultiByteToWideChar
WideCharToMultiByte
FreeLibrary
LoadLibraryW
CreateFileW
GetFileAttributesW
SetFilePointer
GetTempFileNameW
GetTempPathW
HeapAlloc
HeapFree
GetProcessHeap
GetCurrentThread
CreateThread
GetVersionExW
VirtualAlloc
VirtualFree
OpenProcess
VirtualAllocEx
ReadProcessMemory
WriteProcessMemory
VirtualFreeEx
QueryInformationJobObject
GlobalAlloc
GlobalUnlock
GlobalLock
ExpandEnvironmentStringsW
LocalFree
FormatMessageW
lstrcpynW
ExitThread
GlobalFree
lstrcpyW
SetConsoleOutputCP
DecodePointer
HeapReAlloc
HeapSize
InitializeCriticalSectionEx
DeleteCriticalSection
SetLastError
GlobalSize
FindClose
FindFirstFileW
FlushFileBuffers
GetFileSize
GetFullPathNameW
GetVolumeInformationW
LockFile
SetEndOfFile
UnlockFile
WriteFile
OutputDebugStringA
GetModuleHandleA
LoadLibraryExW
LoadLibraryA
lstrcmpiW
lstrcmpA
GetCurrentProcessId
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeCriticalSection
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GlobalReAlloc
GlobalHandle
LocalAlloc
LocalReAlloc
CompareStringW
GlobalGetAtomNameW
FileTimeToSystemTime
FileTimeToLocalFileTime
GetFileAttributesExW
GetFileSizeEx
GetFileTime
SystemTimeToTzSpecificLocalTime
SetThreadPriority
ResumeThread
GlobalAddAtomW
GlobalFlags
lstrcmpW
EncodePointer
GetSystemDirectoryW
GlobalDeleteAtom
GlobalFindAtomW
GetLocaleInfoW
GetUserDefaultUILanguage
VirtualProtect
GetCurrentDirectoryW
FindResourceExW
GetWindowsDirectoryW
VerSetConditionMask
VerifyVersionInfoW
GetTickCount64
GetProfileIntW
SearchPathW
GetUserDefaultLCID
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetSystemTimeAsFileTime
InitializeSListHead

user32

ReleaseCapture
SetCapture
GetNextDlgGroupItem
LoadImageW
TrackMouseEvent
InvalidateRect
KillTimer
SetTimer
DeleteMenu
SetCursor
ShowOwnedPopups
MapDialogRect
GetAsyncKeyState
GetNextDlgTabItem
EndDialog
CreateDialogIndirectParamW
OffsetRect
SetRectEmpty
SendDlgItemMessageA
CopyImage
SystemParametersInfoW
GetMenuItemInfoW
DestroyMenu
IntersectRect
InflateRect
PostQuitMessage
GetMonitorInfoW
MonitorFromWindow
WinHelpW
GetScrollInfo
SetScrollInfo
LoadIconW
GetTopWindow
GetClassLongW
EqualRect
MapWindowPoints
AdjustWindowRectEx
RemovePropW
GetPropW
SetPropW
ShowScrollBar
GetScrollRange
SetScrollRange
ScrollWindow
RedrawWindow
SetForegroundWindow
GetForegroundWindow
SetActiveWindow
UpdateWindow
TrackPopupMenu
SetMenu
GetMenu
GetCapture
WindowFromPoint
EndDeferWindowPos
DeferWindowPos
BeginDeferWindowPos
SetWindowPlacement
GetWindowPlacement
IsChild
IsMenu
GetClassInfoExW
GetClassInfoW
RegisterClassW
CallWindowProcW
GetMessageTime
GetMessagePos
RegisterWindowMessageW
LoadBitmapW
SetMenuItemInfoW
GetMenuCheckMarkDimensions
SetMenuItemBitmaps
EnableMenuItem
MonitorFromPoint
LoadAcceleratorsW
TranslateAcceleratorW
DestroyWindow
ShowWindow
InsertMenuItemW
CopyRect
CheckMenuItem
FillRect
FrameRect
BeginPaint
GetWindowDC
TabbedTextOutW
GrayStringW
DrawTextExW
DrawTextW
IsDialogMessageW
SetWindowLongW
CheckDlgButton
GetDlgItem
MoveWindow
IsWindow
GetScrollPos
SetScrollPos
SetFocus
RealChildWindowFromPoint
GetWindow
DrawFocusRect
IsRectEmpty
DrawIconEx
GetIconInfo
MessageBeep
EnableScrollBar
HideCaret
InvertRect
NotifyWinEvent
CreatePopupMenu
GetMenuDefaultItem
MapVirtualKeyW
GetKeyNameTextW
LoadMenuW
SetLayeredWindowAttributes
EnumDisplayMonitors
DrawStateW
SetClassLongW
SetWindowRgn
SetParent
DrawEdge
DrawFrameControl
IsZoomed
GetSystemMenu
BringWindowToTop
SetCursorPos
IsIconic
SendMessageW
PostMessageW
IsWindowVisible
OpenClipboard
CloseClipboard
SetClipboardData
EmptyClipboard
GetClientRect
ClientToScreen
ScreenToClient
EnumWindows
GetWindowThreadProcessId
wsprintfW
GetMenuStringW
GetMenuState
GetSubMenu
GetMenuItemID
GetMenuItemCount
InsertMenuW
CreateWindowExW
AppendMenuW
RemoveMenu
CharUpperW
GetSystemMetrics
EnableWindow
IsWindowEnabled
MessageBoxW
GetWindowLongW
GetParent
GetLastActivePopup
UnhookWindowsHookEx
GetDC
ReleaseDC
GetSysColor
GetSysColorBrush
LoadCursorW
GetWindowTextW
GetWindowTextLengthW
GetMessageW
TranslateMessage
DispatchMessageW
PeekMessageW
GetActiveWindow
GetKeyState
ValidateRect
GetCursorPos
SetWindowsHookExW
CallNextHookEx
DestroyIcon
GetDlgCtrlID
GetFocus
SetWindowTextW
GetWindowRect
PtInRect
GetDesktopWindow
GetClassNameW
UnpackDDElParam
ReuseDDElParam
GetComboBoxInfo
CopyIcon
DrawIcon
UnionRect
EndPaint
UpdateLayeredWindow
PostThreadMessageW
WaitMessage
GetKeyboardLayout
IsCharLowerW
MapVirtualKeyExW
ToUnicodeEx
GetKeyboardState
CreateAcceleratorTableW
DestroyAcceleratorTable
CopyAcceleratorTableW
SetRect
LockWindowUpdate
SetMenuDefaultItem
GetDoubleClickTime
ModifyMenuW
RegisterClipboardFormatW
CharUpperBuffW
IsClipboardFormatAvailable
GetUpdateRect
CreateDesktopW
SetThreadDesktop
CloseDesktop
GetThreadDesktop
DefWindowProcW
DestroyCursor
GetWindowRgn
CreateMenu
SubtractRect
TranslateMDISysAccel
DefMDIChildProcW
DefFrameProcW
DrawMenuBar
SetWindowPos

gdi32

GetTextFaceW
GetViewportOrgEx
GetWindowOrgEx
SetPixelV
SetPaletteEntries
ExtFloodFill
PtInRegion
GetBoundsRect
FrameRgn
FillRgn
RoundRect
OffsetRgn
GetRgnBox
Rectangle
LPtoDP
CreateRoundRectRgn
Polyline
Polygon
CreatePolygonRgn
GetTextColor
Ellipse
CreateEllipticRgn
SetDIBColorTable
CreateDIBSection
StretchBlt
SetPixel
GetTextCharsetInfo
EnumFontFamiliesW
CreateDIBitmap
CreateCompatibleBitmap
GetBkColor
RealizePalette
GetSystemPaletteEntries
GetPaletteEntries
GetNearestPaletteIndex
CreatePalette
EnumFontFamiliesExW
GetTextMetricsW
GetTextExtentPoint32W
DPtoLP
SetRectRgn
PatBlt
CreateRectRgnIndirect
CreateFontIndirectW
CombineRgn
ScaleWindowExtEx
ScaleViewportExtEx
OffsetWindowOrgEx
OffsetViewportOrgEx
SetWindowOrgEx
SetWindowExtEx
SetViewportOrgEx
SetViewportExtEx
ExtTextOutW
TextOutW
MoveToEx
GetObjectW
SetTextAlign
SetTextColor
SetROP2
SetPolyFillMode
GetLayout
SetLayout
SetMapMode
SetBkMode
SetBkColor
SelectPalette
SelectObject
ExtSelectClipRgn
SelectClipRgn
SaveDC
RestoreDC
RectVisible
PtVisible
LineTo
IntersectClipRect
GetWindowExtEx
GetViewportExtEx
GetStockObject
GetPixel
GetObjectType
GetClipBox
ExcludeClipRect
Escape
CreateRectRgn
CreatePatternBrush
CreatePen
CreateHatchBrush
CreateCompatibleDC
CreateBitmap
BitBlt
DeleteObject
DeleteDC
GetDeviceCaps
CreateDCW
CopyMetaFileW
CreateSolidBrush

msimg32

TransparentBlt
AlphaBlend

winspool.drv

ClosePrinter
OpenPrinterW
DocumentPropertiesW

advapi32

AdjustTokenPrivileges
RegDeleteValueW
ReportEventW
RegisterEventSourceW
DeregisterEventSource
GetTokenInformation
GetLengthSid
CopySid
OpenThreadToken
RegUnLoadKeyW
RegSetValueExW
RegQueryValueExW
RegQueryInfoKeyW
RegOpenKeyExW
RegLoadKeyW
RegEnumKeyExW
RegDeleteKeyW
RegCreateKeyExW
RegCloseKey
LookupPrivilegeValueW
OpenProcessToken

shell32

ShellExecuteW
SHGetFolderPathW
SHGetFileInfoW
SHGetPathFromIDListW
SHGetSpecialFolderLocation
SHGetDesktopFolder
DragQueryFileW
DragFinish
SHAppBarMessage
SHBrowseForFolderW
ord51

shlwapi

PathFindExtensionW
PathFindFileNameW
PathMatchSpecW
UrlUnescapeW
PathFileExistsW
PathStripToRootW
PathRemoveFileSpecW
StrFormatKBSizeW
PathIsUNCW

uxtheme

GetThemePartSize
GetThemeSysColor
IsThemeBackgroundPartiallyTransparent
DrawThemeText
DrawThemeParentBackground
OpenThemeData
CloseThemeData
DrawThemeBackground
GetThemeColor
GetCurrentThemeName
GetWindowTheme
IsAppThemed

ole32

IsAccelerator
OleTranslateAccelerator
OleDestroyMenuDescriptor
OleCreateMenuDescriptor
OleLockRunning
RevokeDragDrop
RegisterDragDrop
CoLockObjectExternal
OleGetClipboard
DoDragDrop
CreateStreamOnHGlobal
CoInitialize
CoDisconnectObject
ReleaseStgMedium
OleDuplicateData
CoTaskMemFree
CoTaskMemAlloc
CoCreateInstance
CoInitializeEx
CoUninitialize

oleaut32

SysAllocStringLen
VariantClear
VariantInit
SafeArrayCreateVector
SafeArrayPutElement
SafeArrayDestroy
SysFreeString
SysAllocString
SysStringLen
LoadTypeLi
SystemTimeToVariantTime
VariantCopy
VariantChangeType
VariantTimeToSystemTime
VarBstrFromDate

rpcrt4

UuidCreate
UuidToStringW
RpcStringFreeW

winhttp

WinHttpQueryHeaders
WinHttpCrackUrl
WinHttpReceiveResponse
WinHttpSendRequest
WinHttpCloseHandle
WinHttpOpenRequest
WinHttpSetOption
WinHttpQueryDataAvailable
WinHttpReadData
WinHttpConnect
WinHttpOpen

gdiplus

GdipAlloc
GdipFree
GdiplusStartup
GdipCloneImage
GdipDisposeImage
GdipGetImageGraphicsContext
GdipGetImageWidth
GdipGetImageHeight
GdipGetImagePixelFormat
GdipGetImagePalette
GdipGetImagePaletteSize
GdipCreateBitmapFromStream
GdipCreateBitmapFromScan0
GdiplusShutdown
GdipBitmapUnlockBits
GdipDeleteGraphics
GdipDrawImageI
GdipCreateBitmapFromHBITMAP
GdipCreateFromHDC
GdipSetInterpolationMode
GdipDrawImageRectI
GdipBitmapLockBits

ws2_32

send
socket
WSACleanup
WSAGetLastError
freeaddrinfo
connect
closesocket
getaddrinfo
WSAStartup

oleacc

AccessibleObjectFromWindow
LresultFromObject
CreateStdAccessibleObject

imm32

ImmReleaseContext
ImmGetOpenStatus
ImmGetContext

winmm

PlaySoundW

Sections

.text
Size: 1.6MB - Virtual size: 1.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 350KB - Virtual size: 350KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 23KB - Virtual size: 40KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 138KB - Virtual size: 138KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

1f29cf427ce43f8454305f6fa29554e7

Code Sign

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16Certificate

Extended Key Usages

Key Usages

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6eCertificate

Extended Key Usages

Key Usages

de:de:0a:82:be:71:23:b3:ee:db:10:4f:8a:3a:ca:1cCertificate

Extended Key Usages

Key Usages

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16Certificate

Extended Key Usages

Key Usages

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate

Extended Key Usages

Key Usages

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate

Key Usages

73:6c:e5:6e:c4:1e:66:09:39:4c:7e:6b:e6:8c:88:1b:bd:ed:5a:70Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

gdi32

msimg32

winspool.drv

advapi32

shell32

shlwapi

uxtheme

ole32

oleaut32

rpcrt4

winhttp

gdiplus

ws2_32

oleacc

imm32

winmm

Sections

.text Size: 1.6MB - Virtual size: 1.6MB

.rdata Size: 350KB - Virtual size: 350KB

.data Size: 23KB - Virtual size: 40KB

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

.reloc Size: 138KB - Virtual size: 138KB

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16
Certificate

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6e
Certificate

de:de:0a:82:be:71:23:b3:ee:db:10:4f:8a:3a:ca:1c
Certificate

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Certificate

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

73:6c:e5:6e:c4:1e:66:09:39:4c:7e:6b:e6:8c:88:1b:bd:ed:5a:70
Signer

.text
Size: 1.6MB - Virtual size: 1.6MB

.rdata
Size: 350KB - Virtual size: 350KB

.data
Size: 23KB - Virtual size: 40KB

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

.reloc
Size: 138KB - Virtual size: 138KB