Cumacean[.]exe

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General

Target

Cumacean.exe
Size

234KB
MD5

d9ad627096015371e1d4db92375bc6ff
SHA1

c625bbef9ca680e05e6d426ef1417086d059cd94
SHA256

1f7f8fa2a0d1850a1753edd61fc2ddfd67031a15b65929469c044dc8c751de03
SHA512

9573885810921efacaa924e48069cd04adbc0f1003a94318734233a570c495d91f6e1dc6ab02e078ebd17cdceb1a616636f6799dc737aae281e9cd4681df6aa3
SSDEEP

6144:Ek62PBHbekcwi+GGKPNYLsJbRGryWCP3fI/C:BpaGgvfRRGrK4a

Score

3^/10

Malware Config

Signatures

Unsigned PE 4 IoCs

Checks for missing Authenticode signature.

resource
unpack001/$PLUGINSDIR/Banner.dll
unpack001/$PLUGINSDIR/System.dll
unpack001/$PLUGINSDIR/nsDialogs.dll
unpack001/$PLUGINSDIR/nsExec.dll

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

Cumacean.exe
.exe windows:5 windows x86 arch:x86

e871f39e81b4aa977737b07cee050825

Code Sign

6b:7d:1c:2e:72:7a:3c:98:51:bb:20:b7:9c:f3:69:b1:1d:e0:b6:c9
Certificate

Issuer

OU=Denitrifikation Karenstider Drachmanns\ ,O=Omfangsmaessige,L=La Tronche,ST=Auvergne-Rhône-Alpes,C=FR,1.2.840.113549.1.9.1=#0c1b4163636f756368656d656e74404d69736f67616c6c69632e506563

Not Before

01-01-2023 07:20

Not After

31-12-2025 07:20

Subject

OU=Denitrifikation Karenstider Drachmanns\ ,O=Omfangsmaessige,L=La Tronche,ST=Auvergne-Rhône-Alpes,C=FR,1.2.840.113549.1.9.1=#0c1b4163636f756368656d656e74404d69736f67616c6c69632e506563

09:c5:cc:f8:bb:66:7d:71:37:aa:c1:59:80:06:cb:31
Certificate

Issuer

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

Not Before

02-11-2023 08:32

Not After

30-10-2034 08:32

Subject

CN=Certum Timestamp 2023,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

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

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

db:c6:5e:0d:6d:c5:8d:52:c5:d3:38:8a:a3:9f:2f:e2:ea:47:3b:12:a6:9b:ea:e8:3b:20:2a:f9:7b:8d:91:ac
Signer

Actual PE Digest

db:c6:5e:0d:6d:c5:8d:52:c5:d3:38:8a:a3:9f:2f:e2:ea:47:3b:12:a6:9b:ea:e8:3b:20:2a:f9:7b:8d:91:ac

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_32BIT_MACHINE

Imports

advapi32

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

shell32

ShellExecuteExA
SHBrowseForFolderA
SHFileOperationA
SHGetPathFromIDListA
SHGetFileInfoA
SHGetSpecialFolderLocation

ole32

OleUninitialize
IIDFromString
OleInitialize
CoTaskMemFree
CoCreateInstance

comctl32

ord17
ImageList_Destroy
ImageList_AddMasked
ImageList_Create

user32

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

gdi32

SetBkMode
CreateBrushIndirect
GetDeviceCaps
SelectObject
DeleteObject
SetBkColor
SetTextColor
CreateFontIndirectA

kernel32

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

Sections

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

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: 512B - Virtual size: 105KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 252KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
$PLUGINSDIR/Banner.dll
.dll windows:6 windows x86 arch:x86

2b2f33529e896a18f9e0cdb98bb9d6ab

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

CloseHandle
Sleep
CreateThread
GetCurrentThreadId
GetModuleHandleA
lstrcmpA
GlobalAlloc
GlobalFree
lstrcpynA
lstrcpyA

user32

wsprintfA
DispatchMessageA
PeekMessageA
PostMessageA
AttachThreadInput
WaitMessage
IsWindow
DestroyWindow
ShowWindow
IsWindowVisible
CreateDialogParamA
SetDlgItemTextA
SetWindowTextA
GetWindowLongA
SetWindowLongA

Exports

Exports

destroy
getWindow
show

Sections

.text
Size: 1024B - Virtual size: 875B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1024B - Virtual size: 854B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 148B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
$PLUGINSDIR/System.dll
.dll windows:6 windows x86 arch:x86

595a3fd71239f605bb02d7a5e48fd4df

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

GlobalAlloc
GlobalSize
GlobalFree
lstrcpynA
lstrcpyA
GetLastError
VirtualAlloc
VirtualProtect
VirtualFree
FreeLibrary
GetModuleHandleA
GetProcAddress
LoadLibraryA
lstrlenA
MultiByteToWideChar
WideCharToMultiByte

user32

wsprintfA

ole32

StringFromGUID2
CLSIDFromString

Exports

Exports

Alloc
Call
Copy
Free
Get
Int64Op
Store
StrAlloc

Sections

.text
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1024B - Virtual size: 926B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 68B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 492B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
$PLUGINSDIR/nsDialogs.dll
.dll windows:6 windows x86 arch:x86

96cabceb30af6fc52810e26202e5e11a

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

lstrlenA
HeapAlloc
HeapReAlloc
HeapFree
lstrcmpiA
MulDiv
GlobalFree
lstrcpynA
GetFileAttributesA
GetCurrentDirectoryA
GlobalAlloc
lstrcpyA
GetProcessHeap
SetCurrentDirectoryA

user32

CreateWindowExA
IsWindow
DestroyWindow
MapDialogRect
SetWindowPos
CreateDialogParamA
GetDlgItem
SetTimer
KillTimer
DrawTextA
SetPropA
GetPropA
RemovePropA
CallWindowProcA
GetWindowRect
SetCursor
MapWindowPoints
GetSysColor
DrawFocusRect
GetWindowLongA
SetWindowLongA
LoadCursorA
IsDialogMessageA
wsprintfA
GetClientRect
CharPrevA
CharNextA
DispatchMessageA
TranslateMessage
GetWindowTextA
SendMessageA
GetMessageA
ShowWindow

gdi32

SetTextColor

shell32

SHGetPathFromIDListA
SHBrowseForFolderA

comdlg32

GetOpenFileNameA
GetSaveFileNameA
CommDlgExtendedError

ole32

CoTaskMemFree

Exports

Exports

Create
CreateControl
CreateItem
CreateTimer
GetUserData
KillTimer
OnBack
OnChange
OnClick
OnNotify
SelectFileDialog
SelectFolderDialog
SetRTL
SetUserData
Show

Sections

.text
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 512B - Virtual size: 152B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 408B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
$PLUGINSDIR/nsExec.dll
.dll windows:6 windows x86 arch:x86

0d6ae1f1ecbace583969d8eb8b21d1b8

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

advapi32

SetSecurityDescriptorDacl
InitializeSecurityDescriptor

user32

FindWindowExA
CharNextExA
CharPrevA
CharNextA
OemToCharBuffA
SendMessageA
wsprintfA

kernel32

CopyFileA
GetStartupInfoA
CreateFileMappingA
lstrlenA
lstrcatA
lstrcpyA
lstrcpynA
GetCommandLineA
CreateFileA
DeleteFileA
ReadFile
GetTempFileNameA
CloseHandle
CreatePipe
PeekNamedPipe
WaitForSingleObject
Sleep
GetCurrentProcess
ExitProcess
TerminateProcess
GetExitCodeProcess
CreateProcessA
GetVersion
GetTickCount
MapViewOfFile
UnmapViewOfFile
GetModuleFileNameA
GetModuleHandleA
GetProcAddress
GlobalAlloc
GlobalReAlloc
GlobalFree
lstrcmpiA

Exports

Exports

Exec
ExecToLog
ExecToStack

Sections

.text
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 252B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Bruseniche.Dav
Fornyes.txt
Gravitometer/disapprobations.mot
Helsingborgs.non
Retableringsudgifter27/ataxia.sto
Retableringsudgifter27/billethul.til
Unriven/isovalerianic/hairgrass/upaaagtethed.unb
adnescent.krs

Sharing

General

Malware Config

Signatures

Files

e871f39e81b4aa977737b07cee050825

Code Sign

6b:7d:1c:2e:72:7a:3c:98:51:bb:20:b7:9c:f3:69:b1:1d:e0:b6:c9Certificate

09:c5:cc:f8:bb:66:7d:71:37:aa:c1:59:80:06:cb:31Certificate

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

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

Key Usages

db:c6:5e:0d:6d:c5:8d:52:c5:d3:38:8a:a3:9f:2f:e2:ea:47:3b:12:a6:9b:ea:e8:3b:20:2a:f9:7b:8d:91:acSigner

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

shell32

ole32

comctl32

user32

gdi32

kernel32

Sections

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

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

.data Size: 512B - Virtual size: 105KB

.ndata Size: - Virtual size: 252KB

.rsrc Size: 3KB - Virtual size: 3KB

2b2f33529e896a18f9e0cdb98bb9d6ab

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

Exports

Exports

Sections

.text Size: 1024B - Virtual size: 875B

.rdata Size: 1024B - Virtual size: 854B

.data Size: - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 148B

595a3fd71239f605bb02d7a5e48fd4df

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

ole32

Exports

Exports

Sections

.text Size: 8KB - Virtual size: 8KB

.rdata Size: 1024B - Virtual size: 926B

.data Size: 512B - Virtual size: 68B

.reloc Size: 512B - Virtual size: 492B

96cabceb30af6fc52810e26202e5e11a

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

comdlg32

ole32

Exports

Exports

Sections

.text Size: 4KB - Virtual size: 4KB

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

.data Size: - Virtual size: 4KB

6b:7d:1c:2e:72:7a:3c:98:51:bb:20:b7:9c:f3:69:b1:1d:e0:b6:c9
Certificate

09:c5:cc:f8:bb:66:7d:71:37:aa:c1:59:80:06:cb:31
Certificate

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

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

db:c6:5e:0d:6d:c5:8d:52:c5:d3:38:8a:a3:9f:2f:e2:ea:47:3b:12:a6:9b:ea:e8:3b:20:2a:f9:7b:8d:91:ac
Signer

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

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

.data
Size: 512B - Virtual size: 105KB

.ndata
Size: - Virtual size: 252KB

.rsrc
Size: 3KB - Virtual size: 3KB

.text
Size: 1024B - Virtual size: 875B

.rdata
Size: 1024B - Virtual size: 854B

.data
Size: - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 148B

.text
Size: 8KB - Virtual size: 8KB

.rdata
Size: 1024B - Virtual size: 926B

.data
Size: 512B - Virtual size: 68B

.reloc
Size: 512B - Virtual size: 492B

.text
Size: 4KB - Virtual size: 4KB

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

.data
Size: - Virtual size: 4KB

.rsrc
Size: 512B - Virtual size: 152B

.reloc
Size: 512B - Virtual size: 408B

.text
Size: 3KB - Virtual size: 3KB

.rdata
Size: 1KB - Virtual size: 1KB

.data
Size: - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 252B