websigner[.]exe

Sharing

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General

Target

websigner.exe
Size

3.8MB
MD5

3b8e2bf5b69637134ac8f237ac3e3e55
SHA1

83f794232e970af205d1b39a796eb9e4f0d0c4c0
SHA256

92c6da004c9b99fba1d13ffa2057ba2ef93290118d416929a066d6266d25ae56
SHA512

f226518d37ee5d9e2e0c0392518d77bfa1243014eadbd3ae7d0fdeb3e00df45251d073b0b5a6f14d01286d9788515e671aaf7166a33904961551e45860191a89
SSDEEP

98304:8sY+G3kT7DcI/fOjoZMg2rYZPWfTNKshtmRj:8N3knoI/2EetfTQSC

Score

1^/10

Malware Config

Signatures

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

websigner.exe
.exe windows:4 windows x86

ea4e67a31ace1a72683a99b80cf37830

Code Sign

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27
Certificate

Issuer

CN=Certum Trusted Network CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

31/05/2021, 06:43

Not After

17/09/2029, 06:43

Subject

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

2b:d4:ae:70:b9:d0:63:5b:2a:e9:84:c8:d6:74:aa:30
Certificate

Issuer

CN=Certum Timestamping 2021 CA,O=Asseco Data Systems S.A.,C=PL

Not Before

28/07/2022, 08:56

Not After

27/07/2033, 08:56

Subject

CN=Certum Timestamp 2022,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

99:a3:80:0a:26:55:3b:65:ab:dc:6e:84:a6:b3:ea:39
Certificate

Issuer

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

19/05/2021, 05:32

Not After

18/05/2036, 05:32

Subject

CN=Certum Code Signing 2021 CA,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87
Certificate

Issuer

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

19/05/2021, 05:32

Not After

18/05/2036, 05:32

Subject

CN=Certum Timestamping 2021 CA,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

50:fa:5a:81:f3:29:ba:39:61:d5:56:af:8f:77:42:26
Certificate

Issuer

CN=Certum Code Signing 2021 CA,O=Asseco Data Systems S.A.,C=PL

Not Before

26/05/2023, 13:10

Not After

25/05/2026, 13:10

Subject

CN=DBO SOFT LTD,OU=IT,O=DBO SOFT LTD,L=Dnipro,ST=Dnipropetrovska oblast,C=UA,1.2.840.113549.1.9.1=#0c16737570706f72744064626f736f66742e636f6d2e7561

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

be:42:6d:1c:3f:8d:58:9a:81:ab:5a:86:93:27:35:77:9d:61:a4:77:dc:60:d3:30:31:b5:a0:e5:2d:54:fa:13
Signer

Actual PE Digest

be:42:6d:1c:3f:8d:58:9a:81:ab:5a:86:93:27:35:77:9d:61:a4:77:dc:60:d3:30:31:b5:a0:e5:2d:54:fa:13

Digest Algorithm

sha256

PE Digest Matches

true

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

advapi32

RegCreateKeyExA
RegEnumKeyA
RegQueryValueExA
RegSetValueExA
RegCloseKey
RegDeleteValueA
RegDeleteKeyA
AdjustTokenPrivileges
LookupPrivilegeValueA
OpenProcessToken
SetFileSecurityA
RegOpenKeyExA
RegEnumValueA

shell32

SHGetFileInfoA
SHFileOperationA
SHGetPathFromIDListA
ShellExecuteExA
SHGetSpecialFolderLocation
SHBrowseForFolderA

ole32

IIDFromString
OleInitialize
OleUninitialize
CoCreateInstance
CoTaskMemFree

comctl32

ord17
ImageList_Create
ImageList_Destroy
ImageList_AddMasked

user32

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

gdi32

SetBkMode
SetBkColor
GetDeviceCaps
CreateFontIndirectA
CreateBrushIndirect
DeleteObject
SetTextColor
SelectObject

kernel32

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

Sections

.text
Size: 25KB - Virtual size: 24KB

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: 1KB - Virtual size: 246KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 896KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 38KB - Virtual size: 37KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

ea4e67a31ace1a72683a99b80cf37830

Code Sign

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27Certificate

Key Usages

2b:d4:ae:70:b9:d0:63:5b:2a:e9:84:c8:d6:74:aa:30Certificate

Extended Key Usages

Key Usages

99:a3:80:0a:26:55:3b:65:ab:dc:6e:84:a6:b3:ea:39Certificate

Extended Key Usages

Key Usages

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87Certificate

Extended Key Usages

Key Usages

50:fa:5a:81:f3:29:ba:39:61:d5:56:af:8f:77:42:26Certificate

Extended Key Usages

Key Usages

be:42:6d:1c:3f:8d:58:9a:81:ab:5a:86:93:27:35:77:9d:61:a4:77:dc:60:d3:30:31:b5:a0:e5:2d:54:fa:13Signer

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

shell32

ole32

comctl32

user32

gdi32

kernel32

Sections

.text Size: 25KB - Virtual size: 24KB

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

.data Size: 1KB - Virtual size: 246KB

.ndata Size: - Virtual size: 896KB

.rsrc Size: 38KB - Virtual size: 37KB

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27
Certificate

2b:d4:ae:70:b9:d0:63:5b:2a:e9:84:c8:d6:74:aa:30
Certificate

99:a3:80:0a:26:55:3b:65:ab:dc:6e:84:a6:b3:ea:39
Certificate

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87
Certificate

50:fa:5a:81:f3:29:ba:39:61:d5:56:af:8f:77:42:26
Certificate

be:42:6d:1c:3f:8d:58:9a:81:ab:5a:86:93:27:35:77:9d:61:a4:77:dc:60:d3:30:31:b5:a0:e5:2d:54:fa:13
Signer

.text
Size: 25KB - Virtual size: 24KB

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

.data
Size: 1KB - Virtual size: 246KB

.ndata
Size: - Virtual size: 896KB

.rsrc
Size: 38KB - Virtual size: 37KB