Static task
static1
Behavioral task
behavioral1
Sample
CONTRARREpdf.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
CONTRARREpdf.exe
Resource
win10v2004-20240419-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240419-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240419-en
General
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Target
CONTRARREpdf.exe
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Size
962KB
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MD5
a6a55ae672a200b4af663cfd6ff51754
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SHA1
dc95ca199ac4ea7d5a48ff6830cba14ac3fd49d5
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SHA256
c441e496ea933b0d63f11c1a0c8d38a79cff1759a33b2c9f6a5d03dad902983e
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SHA512
1d20ddf7b812080bbd4d823260187d374e3d0c415ec618c16f83f102e151bc9de4d0acd0cfb52dfd92c467d59ccdb5a82b78b276c76bf547eb5a5202c28a0051
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SSDEEP
24576:NfLa4jpjvo6FlDoaupZBqEx51a1cMzrpLAXa:Ze4l7lbUZx51KcMxAK
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/$PLUGINSDIR/System.dll
Files
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CONTRARREpdf.exe.exe windows:4 windows x86 arch:x86
f4639a0b3116c2cfc71144b88a929cfd
Code Sign
3c:4c:35:06:4c:4d:8e:67:29:d3:87:79:02:fc:9b:30:d8:3f:05:72Certificate
IssuerCN=Demonter,OU=Stuklofterne stodderprinsernes\ ,O=Demonter,L=Browns,ST=Illinois,C=US,1.2.840.113549.1.9.1=#0c207265737470726f64756b74657440556e706172656e74686573697365642e556eNot Before22/01/2024, 09:18Not After21/01/2027, 09:18SubjectCN=Demonter,OU=Stuklofterne stodderprinsernes\ ,O=Demonter,L=Browns,ST=Illinois,C=US,1.2.840.113549.1.9.1=#0c207265737470726f64756b74657440556e706172656e74686573697365642e556e54:83:ec:2b:10:0f:36:3bCertificate
IssuerCN=Apple Timestamp Certification Authority,OU=Apple Certification Authority,O=Apple Inc.,C=USNot Before15/04/2024, 20:15Not After27/05/2024, 20:15SubjectCN=Timestamp Signer MA1,O=Apple Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
7d:4c:57:63:9f:f3:f0:b7Certificate
IssuerCN=Apple Root CA,OU=Apple Certification Authority,O=Apple Inc.,C=USNot Before05/04/2012, 12:02Not After05/04/2027, 12:02SubjectCN=Apple Timestamp Certification Authority,OU=Apple Certification Authority,O=Apple Inc.,C=USKey Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
02Certificate
IssuerCN=Apple Root CA,OU=Apple Certification Authority,O=Apple Inc.,C=USNot Before25/04/2006, 21:40Not After09/02/2035, 21:40SubjectCN=Apple Root CA,OU=Apple Certification Authority,O=Apple Inc.,C=USKey Usages
KeyUsageCertSign
KeyUsageCRLSign
ac:83:7f:8a:c8:f9:1d:d3:fb:85:ab:a5:89:ce:31:2b:92:16:03:ac:11:d2:08:e9:98:5e:7d:88:69:b3:19:a7Signer
Actual PE Digestac:83:7f:8a:c8:f9:1d:d3:fb:85:ab:a5:89:ce:31:2b:92:16:03:ac:11:d2:08:e9:98:5e:7d:88:69:b3:19:a7Digest Algorithmsha256PE Digest MatchestrueHeaders
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
RegEnumValueW
RegEnumKeyW
RegQueryValueExW
RegSetValueExW
RegCloseKey
RegDeleteValueW
RegDeleteKeyW
AdjustTokenPrivileges
LookupPrivilegeValueW
OpenProcessToken
RegOpenKeyExW
RegCreateKeyExW
shell32
SHGetPathFromIDListW
SHBrowseForFolderW
SHGetFileInfoW
SHFileOperationW
ShellExecuteExW
ole32
CoCreateInstance
OleUninitialize
OleInitialize
IIDFromString
CoTaskMemFree
comctl32
ImageList_Destroy
ord17
ImageList_AddMasked
ImageList_Create
user32
MessageBoxIndirectW
GetDlgItemTextW
SetDlgItemTextW
CreatePopupMenu
AppendMenuW
TrackPopupMenu
OpenClipboard
EmptyClipboard
SetClipboardData
CloseClipboard
IsWindowVisible
CallWindowProcW
GetMessagePos
CheckDlgButton
LoadCursorW
SetCursor
GetSysColor
SetWindowPos
GetWindowLongW
IsWindowEnabled
SetClassLongW
GetSystemMenu
EnableMenuItem
GetWindowRect
ScreenToClient
EndDialog
RegisterClassW
SystemParametersInfoW
CharPrevW
GetClassInfoW
DialogBoxParamW
CharNextW
ExitWindowsEx
DestroyWindow
CreateDialogParamW
SetTimer
SetWindowTextW
PostQuitMessage
SetForegroundWindow
ShowWindow
wsprintfW
SendMessageTimeoutW
FindWindowExW
IsWindow
GetDlgItem
SetWindowLongW
LoadImageW
GetDC
ReleaseDC
EnableWindow
InvalidateRect
SendMessageW
DefWindowProcW
BeginPaint
GetClientRect
FillRect
DrawTextW
EndPaint
CharNextA
wsprintfA
DispatchMessageW
CreateWindowExW
PeekMessageW
GetSystemMetrics
gdi32
GetDeviceCaps
SetBkColor
SelectObject
DeleteObject
CreateBrushIndirect
CreateFontIndirectW
SetBkMode
SetTextColor
kernel32
lstrcmpiA
CreateFileW
GetTempFileNameW
RemoveDirectoryW
CreateProcessW
CreateDirectoryW
GetLastError
CreateThread
GlobalLock
GlobalUnlock
GetDiskFreeSpaceW
WideCharToMultiByte
lstrcpynW
lstrlenW
SetErrorMode
GetVersionExW
GetCommandLineW
GetTempPathW
GetWindowsDirectoryW
WriteFile
CopyFileW
ExitProcess
GetCurrentProcess
GetModuleFileNameW
GetFileSize
GetTickCount
Sleep
SetFileAttributesW
GetFileAttributesW
SetCurrentDirectoryW
MoveFileW
GetFullPathNameW
GetShortPathNameW
SearchPathW
CompareFileTime
SetFileTime
CloseHandle
lstrcmpiW
lstrcmpW
ExpandEnvironmentStringsW
GlobalFree
GlobalAlloc
GetModuleHandleW
LoadLibraryExW
FreeLibrary
WritePrivateProfileStringW
GetPrivateProfileStringW
lstrlenA
MultiByteToWideChar
ReadFile
SetFilePointer
FindClose
FindNextFileW
FindFirstFileW
DeleteFileW
MulDiv
lstrcpyA
MoveFileExW
lstrcatW
GetSystemDirectoryW
GetProcAddress
GetModuleHandleA
GetExitCodeProcess
WaitForSingleObject
SetEnvironmentVariableW
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: 1KB - Virtual size: 170KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.ndata Size: - Virtual size: 256KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 292KB - Virtual size: 291KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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$PLUGINSDIR/System.dll.dll windows:4 windows x86 arch:x86
509a34b3a68a773e0afb4259e68f9f82
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
GlobalAlloc
GlobalFree
GlobalSize
lstrcpynW
lstrcpyW
GetProcAddress
WideCharToMultiByte
VirtualFree
FreeLibrary
lstrlenW
LoadLibraryW
GetModuleHandleW
MultiByteToWideChar
VirtualAlloc
VirtualProtect
GetLastError
user32
wsprintfW
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: 867B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 120B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 1024B - Virtual size: 662B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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Epistolising57/Oparbejdelsernes/Wanderlusts/sprogtalent/Erstatte.reo
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Epistolising57/Oparbejdelsernes/Wanderlusts/sprogtalent/Sheet189.txt
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Reelleres/Prerock/Hierarchy/Davyne.Fer
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Tyfusens/Tymbals.cin
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Tyfusens/Vanskeliggjordes88.bru
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Tyfusens/grousewards.maf
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Tyfusens/obskniteter.hof
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Tyfusens/paatrykt.sup
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Tyfusens/renunciate.pus
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Tyfusens/stablemaskine.sam
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Tyfusens/trangestes.mas
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Tyfusens/unideographically.vaa
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uselviskhed/Dueler.tua
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uselviskhed/Indgravendes.Sbe