Behavioral task
behavioral1
Sample
2313.docx
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
2313.docx
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
O.rtf
Resource
win7-20220901-en
Behavioral task
behavioral4
Sample
O.rtf
Resource
win10v2004-20220812-en
Behavioral task
behavioral5
Sample
vbc.exe
Resource
win7-20221111-en
Behavioral task
behavioral6
Sample
vbc.exe
Resource
win10v2004-20220812-en
General
-
Target
Remcos.zip
-
Size
337KB
-
MD5
1199843047c57c199c303a83143ad1cf
-
SHA1
18ad4fa9efe176ddf2b18c390360cb6ff929dd0f
-
SHA256
56ac909a9052c965c797e92ce321b03b2855c2cc1df3c73c0f7b524bb86b5ef6
-
SHA512
078fbcfc683cdb1676580f3469592ea0b2f0955745ce76100bdd79f19b4c760f5508d41da9fe04790f2f49c7e1cb816771c8e466395f13156ca69fe234ff8648
-
SSDEEP
6144:l8Lc3wrhZtQ/+WFWAP0pgzkWm6N6p+MKCviMxIi5EEpcNxMMDyGQ4YlStMehHx:8ZqspI/NZavimpMxMHGQ4GSMOR
Malware Config
Extracted
http:/QQQQWWWWQWWWWQWWQWQWQWQQWQWQQWQWQWQWQWQWQWQQQQQQQQOQQQQQOOOOOOOOQOQQQQOQOQOQOQOQOQQWWWWQWQWQWQWQWQWQWQWQQWQ@2901773865/O.DOC
Signatures
-
NSIS installer 2 IoCs
Processes:
resource yara_rule static1/unpack001/vbc.exe nsis_installer_1 static1/unpack001/vbc.exe nsis_installer_2
Files
-
Remcos.zip.zip
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2313.docx.docx office2007
-
O.DOC.rtf .doc
-
vbc.exe.exe windows x86
b78ecf47c0a3e24a6f4af114e2d1f5de
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
SetEnvironmentVariableA
Sleep
GetTickCount
GetFileSize
GetModuleFileNameA
GetCurrentProcess
CopyFileA
GetFileAttributesA
SetFileAttributesA
GetWindowsDirectoryA
GetTempPathA
GetCommandLineA
lstrlenA
GetVersion
SetErrorMode
lstrcpynA
ExitProcess
GetFullPathNameA
GlobalLock
CreateThread
GetLastError
CreateDirectoryA
CreateProcessA
RemoveDirectoryA
CreateFileA
GetTempFileNameA
ReadFile
WriteFile
lstrcpyA
MoveFileExA
lstrcatA
GetSystemDirectoryA
GetProcAddress
CloseHandle
SetCurrentDirectoryA
MoveFileA
CompareFileTime
GetShortPathNameA
SearchPathA
lstrcmpiA
SetFileTime
lstrcmpA
ExpandEnvironmentStringsA
GlobalUnlock
GetDiskFreeSpaceA
GlobalFree
FindFirstFileA
FindNextFileA
DeleteFileA
SetFilePointer
GetPrivateProfileStringA
FindClose
MultiByteToWideChar
FreeLibrary
MulDiv
WritePrivateProfileStringA
LoadLibraryExA
GetModuleHandleA
GetExitCodeProcess
WaitForSingleObject
GlobalAlloc
user32
ScreenToClient
GetSystemMenu
SetClassLongA
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongA
SetCursor
LoadCursorA
CheckDlgButton
GetMessagePos
LoadBitmapA
CallWindowProcA
IsWindowVisible
CloseClipboard
SetClipboardData
EmptyClipboard
PostQuitMessage
GetWindowRect
EnableMenuItem
CreatePopupMenu
GetSystemMetrics
SetDlgItemTextA
GetDlgItemTextA
MessageBoxIndirectA
CharPrevA
DispatchMessageA
PeekMessageA
ReleaseDC
EnableWindow
InvalidateRect
SendMessageA
DefWindowProcA
BeginPaint
GetClientRect
FillRect
DrawTextA
EndDialog
RegisterClassA
SystemParametersInfoA
CreateWindowExA
GetClassInfoA
DialogBoxParamA
CharNextA
ExitWindowsEx
GetDC
CreateDialogParamA
SetTimer
GetDlgItem
SetWindowLongA
SetForegroundWindow
LoadImageA
IsWindow
SendMessageTimeoutA
FindWindowExA
OpenClipboard
TrackPopupMenu
AppendMenuA
EndPaint
DestroyWindow
wsprintfA
ShowWindow
SetWindowTextA
gdi32
SelectObject
SetBkMode
CreateFontIndirectA
SetTextColor
DeleteObject
GetDeviceCaps
CreateBrushIndirect
SetBkColor
shell32
SHGetSpecialFolderLocation
SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
ShellExecuteA
SHFileOperationA
advapi32
RegDeleteKeyA
SetFileSecurityA
OpenProcessToken
LookupPrivilegeValueA
AdjustTokenPrivileges
RegOpenKeyExA
RegEnumValueA
RegDeleteValueA
RegCloseKey
RegCreateKeyExA
RegSetValueExA
RegQueryValueExA
RegEnumKeyA
comctl32
ImageList_Create
ImageList_AddMasked
ImageList_Destroy
ord17
ole32
OleUninitialize
OleInitialize
CoTaskMemFree
CoCreateInstance
Sections
.text Size: 23KB - Virtual size: 23KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1024B - Virtual size: 105KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.ndata Size: - Virtual size: 88KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 70KB - Virtual size: 69KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ