Fix otc[.]zip | Triage

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General

Target

Fix otc.zip
Size

87.8MB
MD5

c783d4e1eeab7c1c0545996bb3f6fb29
SHA1

c8aadfc4f1f49a90c7ee457e269e834f2fac2e32
SHA256

193b23c68cccd29a18fbc3f29517c6f528e4c7c579d45a625d6f4e92059e93d8
SHA512

f41c6e698973b84353f92fe9985ee2802a996d4fa08a3e07240f10314be0657a09a0141f6503154293f0dfbf824186146219ff3f0952aa25e9c221968fa9722b
SSDEEP

1572864:fynd9CvkpEIebdzkDdbRXWgwzQlRN3uNMUfa4cui9ncbnKQu0mUhHfk+iD4PlYos:WOv0i4xNGg0kDSMUfa4c39ncbnK+hHfK

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/otc3/Steam.dll

Files

Fix otc.zip
.zip
otc3/LauncherSU.exe
.exe windows x86

b34f154ec913d2d2c435cbd644e91687

Code Sign

33:00:00:02:cb:b7:75:39:fb:02:71:42:36:00:00:00:00:02:cb
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

12-05-2022 20:45

Not After

11-05-2023 20:45

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08-07-2011 20:59

Not After

08-07-2026 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

10:8a:71:9b:53:ee:81:69:5d:c0:6e:d2:64:ee:51:5c:52:1e:df:6c:04:18:12:27:38:17:db:8d:48:37:82:8b
Signer

Actual PE Digest

10:8a:71:9b:53:ee:81:69:5d:c0:6e:d2:64:ee:51:5c:52:1e:df:6c:04:18:12:27:38:17:db:8d:48:37:82:8b

Digest Algorithm

sha256

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
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

Imports

kernel32

SetEnvironmentVariableW
SetFileAttributesW
Sleep
GetTickCount
GetFileSize
GetModuleFileNameW
GetCurrentProcess
CopyFileW
SetCurrentDirectoryW
GetFileAttributesW
GetWindowsDirectoryW
GetTempPathW
GetCommandLineW
GetVersion
SetErrorMode
lstrlenW
lstrcpynW
GetDiskFreeSpaceW
ExitProcess
GetShortPathNameW
CreateThread
GetLastError
CreateDirectoryW
CreateProcessW
RemoveDirectoryW
lstrcmpiA
CreateFileW
GetTempFileNameW
WriteFile
lstrcpyA
MoveFileExW
lstrcatW
GetSystemDirectoryW
GetProcAddress
GetModuleHandleA
GetExitCodeProcess
WaitForSingleObject
lstrcmpiW
MoveFileW
GetFullPathNameW
SetFileTime
SearchPathW
CompareFileTime
lstrcmpW
CloseHandle
ExpandEnvironmentStringsW
GlobalFree
GlobalLock
GlobalUnlock
GlobalAlloc
FindFirstFileW
FindNextFileW
DeleteFileW
SetFilePointer
ReadFile
FindClose
lstrlenA
MulDiv
MultiByteToWideChar
WideCharToMultiByte
GetPrivateProfileStringW
WritePrivateProfileStringW
FreeLibrary
LoadLibraryExW
GetModuleHandleW

user32

GetSystemMenu
SetClassLongW
EnableMenuItem
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongW
SetCursor
LoadCursorW
CheckDlgButton
GetMessagePos
LoadBitmapW
CallWindowProcW
IsWindowVisible
CloseClipboard
SetClipboardData
EmptyClipboard
OpenClipboard
ScreenToClient
GetWindowRect
GetDlgItem
GetSystemMetrics
SetDlgItemTextW
GetDlgItemTextW
MessageBoxIndirectW
CharPrevW
CharNextA
wsprintfA
DispatchMessageW
PeekMessageW
ReleaseDC
EnableWindow
InvalidateRect
SendMessageW
DefWindowProcW
BeginPaint
GetClientRect
FillRect
DrawTextW
EndDialog
RegisterClassW
SystemParametersInfoW
CreateWindowExW
GetClassInfoW
DialogBoxParamW
CharNextW
ExitWindowsEx
DestroyWindow
GetDC
SetTimer
SetWindowTextW
LoadImageW
SetForegroundWindow
ShowWindow
IsWindow
SetWindowLongW
FindWindowExW
TrackPopupMenu
AppendMenuW
CreatePopupMenu
EndPaint
CreateDialogParamW
SendMessageTimeoutW
wsprintfW
PostQuitMessage

gdi32

SelectObject
SetBkMode
CreateFontIndirectW
SetTextColor
DeleteObject
GetDeviceCaps
CreateBrushIndirect
SetBkColor

shell32

SHGetSpecialFolderLocation
ShellExecuteExW
SHGetPathFromIDListW
SHBrowseForFolderW
SHGetFileInfoW
SHFileOperationW

advapi32

AdjustTokenPrivileges
RegCreateKeyExW
RegOpenKeyExW
SetFileSecurityW
OpenProcessToken
LookupPrivilegeValueW
RegEnumValueW
RegDeleteKeyW
RegDeleteValueW
RegCloseKey
RegSetValueExW
RegQueryValueExW
RegEnumKeyW

comctl32

ImageList_Create
ImageList_AddMasked
ImageList_Destroy
ord17

ole32

OleUninitialize
OleInitialize
CoTaskMemFree
CoCreateInstance

Sections

.text
Size: 26KB - Virtual size: 25KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 451KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 560KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 38KB - Virtual size: 38KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
otc3/Steam.dll
.dll windows x86

495196b676c92fb5a9495bceaa066d64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

SetConsoleTitleA
VirtualAlloc
FindResourceA
ExitThread
GetModuleHandleA
LoadLibraryA
LockResource
CreateThread
LoadResource
AddVectoredExceptionHandler
GetProcAddress
GetCurrentProcessId
AllocConsole
VirtualQuery
VirtualFree
HeapCreate
VirtualProtect
HeapFree
GetCurrentProcess
SizeofResource
Thread32First
GetCurrentThreadId
SuspendThread
ResumeThread
CreateToolhelp32Snapshot
Sleep
HeapReAlloc
CloseHandle
HeapAlloc
GetThreadContext
GetModuleHandleW
FlushInstructionCache
SetThreadContext
OpenThread
LeaveCriticalSection
InitializeSListHead
GetSystemTimeAsFileTime
QueryPerformanceCounter
GetModuleFileNameA
Thread32Next
InitializeCriticalSectionAndSpinCount
DeleteCriticalSection
SetEvent
ResetEvent
WaitForSingleObjectEx
CreateEventW
IsProcessorFeaturePresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsDebuggerPresent
EnterCriticalSection

user32

MessageBoxA
wsprintfA

gdi32

AddFontMemResourceEx

msvcp140

??Bid@locale@std@@QAEIXZ
?_Gettrue@_Locinfo@std@@QBEPBDXZ
?_Getfalse@_Locinfo@std@@QBEPBDXZ
?_Getlconv@_Locinfo@std@@QBEPBUlconv@@XZ
?_Getcvt@_Locinfo@std@@QBE?AU_Cvtvec@@XZ
??1_Locinfo@std@@QAE@XZ
??0_Locinfo@std@@QAE@PBD@Z
?_Incref@facet@locale@std@@UAEXXZ
??1facet@locale@std@@MAE@XZ
?_Xlength_error@std@@YAXPBD@Z
?id@?$numpunct@D@std@@2V0locale@2@A
?_Xout_of_range@std@@YAXPBD@Z
?_Xbad_alloc@std@@YAXXZ
?_Init@locale@std@@CAPAV_Locimp@12@_N@Z
?_Getgloballocale@locale@std@@CAPAV_Locimp@12@XZ
??0_Lockit@std@@QAE@H@Z
??1_Lockit@std@@QAE@XZ
??0facet@locale@std@@IAE@I@Z
?_Decref@facet@locale@std@@UAEPAV_Facet_base@3@XZ

vcruntime140

memcpy
__current_exception_context
__std_type_info_destroy_list
memset
_CxxThrowException
memmove
__std_terminate
__std_exception_destroy
__current_exception
__CxxFrameHandler3
__std_exception_copy
_except_handler4_common

api-ms-win-crt-heap-l1-1-0

free
_callnewh
malloc
calloc

api-ms-win-crt-string-l1-1-0

toupper

api-ms-win-crt-stdio-l1-1-0

__stdio_common_vfprintf
__acrt_iob_func
freopen_s

api-ms-win-crt-math-l1-1-0

_ldsign
_fdsign
_dsign
_ldclass
_fdclass
_dclass

api-ms-win-crt-convert-l1-1-0

strtoul

api-ms-win-crt-runtime-l1-1-0

_invalid_parameter_noinfo_noreturn
_initterm_e
_initterm
_cexit
_crt_atexit
_execute_onexit_table
_register_onexit_function
_initialize_onexit_table
_initialize_narrow_environment
_configure_narrow_argv
_seh_filter_dll
terminate

Sections

.text
Size: 216KB - Virtual size: 216KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 170KB - Virtual size: 169KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 31.9MB - Virtual size: 31.9MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

b34f154ec913d2d2c435cbd644e91687

Code Sign

33:00:00:02:cb:b7:75:39:fb:02:71:42:36:00:00:00:00:02:cbCertificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

10:8a:71:9b:53:ee:81:69:5d:c0:6e:d2:64:ee:51:5c:52:1e:df:6c:04:18:12:27:38:17:db:8d:48:37:82:8bSigner

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

Sections

.text Size: 26KB - Virtual size: 25KB

.rdata Size: 5KB - Virtual size: 5KB

.data Size: 1KB - Virtual size: 451KB

.ndata Size: - Virtual size: 560KB

.rsrc Size: 38KB - Virtual size: 38KB

495196b676c92fb5a9495bceaa066d64

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

msvcp140

vcruntime140

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-runtime-l1-1-0

Sections

.text Size: 216KB - Virtual size: 216KB

.rdata Size: 170KB - Virtual size: 169KB

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

.rsrc Size: 31.9MB - Virtual size: 31.9MB

.reloc Size: 9KB - Virtual size: 9KB

33:00:00:02:cb:b7:75:39:fb:02:71:42:36:00:00:00:00:02:cb
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

10:8a:71:9b:53:ee:81:69:5d:c0:6e:d2:64:ee:51:5c:52:1e:df:6c:04:18:12:27:38:17:db:8d:48:37:82:8b
Signer

.text
Size: 26KB - Virtual size: 25KB

.rdata
Size: 5KB - Virtual size: 5KB

.data
Size: 1KB - Virtual size: 451KB

.ndata
Size: - Virtual size: 560KB

.rsrc
Size: 38KB - Virtual size: 38KB

.text
Size: 216KB - Virtual size: 216KB

.rdata
Size: 170KB - Virtual size: 169KB

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

.rsrc
Size: 31.9MB - Virtual size: 31.9MB

.reloc
Size: 9KB - Virtual size: 9KB