Efterslttens[.]exe

Sharing

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General

Target

Efterslttens.exe
Size

517KB
MD5

c712114cf9c9e5bc2081647461976688
SHA1

7e4d2499d8abd28c48ee94a27b19feef1851941a
SHA256

1b144c08fe6d2f1233097067e5957b097a990154946e3cd359271db5aac1d4d5
SHA512

704cffdd576edc619165d98c1736c5e96555c22578ce61eaafca6dd9c8f6a676552865dd4ab56861f44a26166fda5a0fa96ad7aba28420390922dc6943b6b91a
SSDEEP

12288:zhtN9eZcSEamiIc4MaG3MfpzjWF2XdccP8ug2:dpeKWIcFaG3SW4RP8+

Score

1^/10

Malware Config

Signatures

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

Efterslttens.exe
.exe windows:4 windows x86

3abe302b6d9a1256e6a915429af4ffd2

Code Sign

75:df:87:42:60:ab:4e:1c:0f:33:70:aa:fd:21:88:ad:87:2f:57:d8
Certificate

Issuer

OU=Einkorn Flageoletter Hypermoralskes\ ,O=Tarai,L=Caen,ST=Normandie,C=FR,1.2.840.113549.1.9.1=#0c18417274687269746963616c6c7940426c6462756e642e536e

Not Before

02/08/2023, 03:57

Not After

01/08/2026, 03:57

Subject

OU=Einkorn Flageoletter Hypermoralskes\ ,O=Tarai,L=Caen,ST=Normandie,C=FR,1.2.840.113549.1.9.1=#0c18417274687269746963616c6c7940426c6462756e642e536e

b4:cb:66:c7:37:b6:b3:36:ae:fb:5a:fd:a8:d9:9d:3a:fe:a3:7d:49:c3:f2:ee:e4:26:2e:aa:1d:aa:23:4e:72
Signer

Actual PE Digest

b4:cb:66:c7:37:b6:b3:36:ae:fb:5a:fd:a8:d9:9d:3a:fe:a3:7d:49:c3:f2:ee:e4:26:2e:aa:1d:aa:23:4e:72

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
SetCurrentDirectoryA
GetLastError
CreateDirectoryA
CreateProcessA
RemoveDirectoryA
CreateFileA
GetTempFileNameA
ReadFile
WriteFile
lstrcpyA
MoveFileExA
lstrcatA
GetSystemDirectoryA
GetProcAddress
GetExitCodeProcess
WaitForSingleObject
CompareFileTime
SetFileAttributesA
GetFileAttributesA
GetShortPathNameA
MoveFileA
GetFullPathNameA
SetFileTime
SearchPathA
CloseHandle
lstrcmpiA
CreateThread
GlobalLock
lstrcmpA
FindFirstFileA
FindNextFileA
DeleteFileA
SetFilePointer
GetPrivateProfileStringA
FindClose
MultiByteToWideChar
FreeLibrary
MulDiv
WritePrivateProfileStringA
LoadLibraryExA
GetModuleHandleA
GlobalAlloc
GlobalFree
ExpandEnvironmentStringsA

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
ShellExecuteExA
SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
SHFileOperationA

advapi32

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

comctl32

ImageList_Create
ImageList_AddMasked
ImageList_Destroy
ord17

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: 64KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 129KB - Virtual size: 129KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3abe302b6d9a1256e6a915429af4ffd2

Code Sign

75:df:87:42:60:ab:4e:1c:0f:33:70:aa:fd:21:88:ad:87:2f:57:d8Certificate

b4:cb:66:c7:37:b6:b3:36:ae:fb:5a:fd:a8:d9:9d:3a:fe:a3:7d:49:c3:f2:ee:e4:26:2e:aa:1d:aa:23:4e:72Signer

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: 64KB

.rsrc Size: 129KB - Virtual size: 129KB

75:df:87:42:60:ab:4e:1c:0f:33:70:aa:fd:21:88:ad:87:2f:57:d8
Certificate

b4:cb:66:c7:37:b6:b3:36:ae:fb:5a:fd:a8:d9:9d:3a:fe:a3:7d:49:c3:f2:ee:e4:26:2e:aa:1d:aa:23:4e:72
Signer

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

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

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

.ndata
Size: - Virtual size: 64KB

.rsrc
Size: 129KB - Virtual size: 129KB