Ekstre[.]pdf[.]exe

Sharing

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General

Target

Ekstre.pdf.exe
Size

589KB
MD5

5a090bfba60f77b2d46601615fa5879a
SHA1

9d5feb28911b6bcd9aba0ef3d2fc0c24a283f9bb
SHA256

15ebfa7d5cca98eaf5190c84e73efa53a21f8646ecb4c4cb56aea5fb0390c188
SHA512

65dc1fb7af9694d7d2d3d9448c8f8f808d0762ee0c37bd2376fb9f5ec8d1d54009a5c030c3fcc0d12e8413681e73576a4ce873f76f55ac2c86c78eb83eee7750
SSDEEP

12288:9uRtJnfJk+Jc8J58JazDAjMDla4TEGzxGtV9Tj20z168E7rg3ONKUH:9ulnhk/8J5yRqvTFxgTjxzk8QOyH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/$PLUGINSDIR/nsExec.dll

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

Ekstre.pdf.exe
.exe windows:4 windows x86 arch:x86

e9c0657252137ac61c1eeeba4c021000

Code Sign

43:01:8a:8e:18:59:92:b6:5e:3d:ac:31:8e:02:f2:e6:d4:64:9f:9d
Certificate

Issuer

CN=Autentificerendes,OU=strkkemuskel Delstatsparlamenterne Goy\ ,O=Autentificerendes,L=Épisy,ST=Île-de-France,C=FR,1.2.840.113549.1.9.1=#0c1a416e6c6f677672646965726e654045667465726d6164732e5675

Not Before

10/03/2023, 03:36

Not After

09/03/2026, 03:36

Subject

CN=Autentificerendes,OU=strkkemuskel Delstatsparlamenterne Goy\ ,O=Autentificerendes,L=Épisy,ST=Île-de-France,C=FR,1.2.840.113549.1.9.1=#0c1a416e6c6f677672646965726e654045667465726d6164732e5675

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

Issuer

CN=VeriSign Universal Root Certification Authority,OU=VeriSign Trust Network+OU=(c) 2008 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

12/01/2016, 00:00

Not After

11/01/2031, 23:59

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

23/12/2017, 00:00

Not After

22/03/2029, 23:59

Subject

CN=Symantec SHA256 TimeStamping Signer - G3,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

f0:92:23:5b:13:b3:93:63:3d:d3:ea:cc:20:b4:6b:3d:1f:6f:0e:ee:89:d8:9c:8b:48:a0:84:8e:f9:04:ef:a9
Signer

Actual PE Digest

f0:92:23:5b:13:b3:93:63:3d:d3:ea:cc:20:b4:6b:3d:1f:6f:0e:ee:89:d8:9c:8b:48:a0:84:8e:f9:04:ef:a9

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

kernel32

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

user32

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

gdi32

SelectObject
SetTextColor
SetBkMode
CreateFontIndirectA
CreateBrushIndirect
DeleteObject
GetDeviceCaps
SetBkColor

shell32

SHGetSpecialFolderLocation
ShellExecuteExA
SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
SHFileOperationA

advapi32

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

comctl32

ImageList_Create
ImageList_AddMasked
ord17
ImageList_Destroy

ole32

OleUninitialize
OleInitialize
CoTaskMemFree
CoCreateInstance

Sections

.text
Size: 24KB - 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: 106KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 68KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
$PLUGINSDIR/nsExec.dll
.dll windows:4 windows x86 arch:x86

20bc9f18cbf0b5fccf1f336a3608e7f7

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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

Imports

kernel32

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

user32

SendMessageA
OemToCharBuffA
CharNextA
CharPrevA
FindWindowExA
wsprintfA
CharNextExA

advapi32

InitializeSecurityDescriptor
SetSecurityDescriptorDacl

Exports

Exports

Exec
ExecToLog
ExecToStack

Sections

.text
Size: 3KB - Virtual size: 2KB

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: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 432B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Brestolenes/andenklassesbilletten/Rueful/spirane.mac
Knirkende/Phallitis/trings/begrdeligeres.mel
Ninett/stafets.tra
Otmanns204/Sovepudernes.txt
Otmanns204/Sportshallen.lkk
Variolation/Magiske/Asteniskes/Anerkendelse/Fiskale.loc
.ps1
Variolation/Magiske/Asteniskes/Anerkendelse/Illuminist127.pas
Variolation/Magiske/Asteniskes/Anerkendelse/Kastagnetter.Pro
lokalplanstridiges.str
loupen.kap
plaustral.bof
skoleskibet.phr
skriveblokkes.eft
sljfes.bac

Sharing

General

Malware Config

Signatures

Files

e9c0657252137ac61c1eeeba4c021000

Code Sign

43:01:8a:8e:18:59:92:b6:5e:3d:ac:31:8e:02:f2:e6:d4:64:9f:9dCertificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12Certificate

Extended Key Usages

Key Usages

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12Certificate

Extended Key Usages

Key Usages

f0:92:23:5b:13:b3:93:63:3d:d3:ea:cc:20:b4:6b:3d:1f:6f:0e:ee:89:d8:9c:8b:48:a0:84:8e:f9:04:ef:a9Signer

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

Sections

.text Size: 24KB - Virtual size: 23KB

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

.data Size: 1024B - Virtual size: 106KB

.ndata Size: - Virtual size: 68KB

.rsrc Size: 3KB - Virtual size: 2KB

20bc9f18cbf0b5fccf1f336a3608e7f7

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

advapi32

Exports

Exports

Sections

.text Size: 3KB - Virtual size: 2KB

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

.data Size: 512B - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 432B

43:01:8a:8e:18:59:92:b6:5e:3d:ac:31:8e:02:f2:e6:d4:64:9f:9d
Certificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

f0:92:23:5b:13:b3:93:63:3d:d3:ea:cc:20:b4:6b:3d:1f:6f:0e:ee:89:d8:9c:8b:48:a0:84:8e:f9:04:ef:a9
Signer

.text
Size: 24KB - Virtual size: 23KB

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

.data
Size: 1024B - Virtual size: 106KB

.ndata
Size: - Virtual size: 68KB

.rsrc
Size: 3KB - Virtual size: 2KB

.text
Size: 3KB - Virtual size: 2KB

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

.data
Size: 512B - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 432B