Static task
static1
Behavioral task
behavioral1
Sample
PO-94858.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
PO-94858.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240903-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20241007-en
General
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Target
17102024_1341_17102024_PO-94858.gz
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Size
771KB
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MD5
b77fba1ef9cb1a0d587c9e8d63d73119
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SHA1
74922a37d03732520fbaaa7adbd4eb7539a61279
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SHA256
d6d3e11dece00e76f60d74fb2c117ae261c961fbb37030fc8d6ad748510914ae
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SHA512
e1993a4c33d550becade96dd551218955a7785ea837cd1a2f533ab7095d2565da8206be76b977596ef718057e237ede0e42bc5941fb67bdd81a99d52e82285fc
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SSDEEP
24576:MXZ1oU9kdlx/INqTTYUYHJ1qQDFzKdM0D7hRRn:W/oU9b9DFzK6SRRn
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack002/$PLUGINSDIR/System.dll -
NSIS installer 2 IoCs
resource yara_rule static1/unpack001/PO-94858.exe nsis_installer_1 static1/unpack001/PO-94858.exe nsis_installer_2
Files
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17102024_1341_17102024_PO-94858.gz.gz
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PO-94858.exe.exe windows:4 windows x86 arch:x86
076b06e6a65c9b7cca5a61be0cd82165
Code Sign
5e:eb:c4:c3:e0:f2:4a:6a:a6:4b:7c:34:dc:94:75:4e:22:73:b9:3bCertificate
IssuerCN=Coypus,O=Coypus,L=Berlin,C=DENot Before01-09-2024 09:58Not After01-09-2027 09:58SubjectCN=Coypus,O=Coypus,L=Berlin,C=DE5e:eb:c4:c3:e0:f2:4a:6a:a6:4b:7c:34:dc:94:75:4e:22:73:b9:3bCertificate
IssuerCN=Coypus,O=Coypus,L=Berlin,C=DENot Before01-09-2024 09:58Not After01-09-2027 09:58SubjectCN=Coypus,O=Coypus,L=Berlin,C=DE0a:0e:1f:c6:15:85:50:26:fb:33:81:d7:c8:69:4d:3f:f2:cb:21:cd:e8:f9:d2:74:98:a6:0c:25:9e:55:fc:c1Signer
Actual PE Digest0a:0e:1f:c6:15:85:50:26:fb:33:81:d7:c8:69:4d:3f:f2:cb:21:cd:e8:f9:d2:74:98:a6:0c:25:9e:55:fc:c1Digest Algorithmsha256PE Digest Matchestruea7:31:f7:40:29:ed:22:68:79:3e:a9:fc:e8:ad:1e:27:28:1e:d5:97Signer
Actual PE Digesta7:31:f7:40:29:ed:22:68:79:3e:a9:fc:e8:ad:1e:27:28:1e:d5:97Digest Algorithmsha1PE 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
kernel32
Sleep
SetFileAttributesA
GetFileAttributesA
GetTickCount
GetModuleFileNameA
GetCurrentProcess
CopyFileA
GetFileSize
ExitProcess
GetWindowsDirectoryA
GetTempPathA
GetCommandLineA
GetVersion
SetErrorMode
lstrlenA
lstrcpynA
ExpandEnvironmentStringsA
SetEnvironmentVariableA
GetFullPathNameA
CreateThread
GetLastError
CreateDirectoryA
CreateProcessA
RemoveDirectoryA
CreateFileA
GetTempFileNameA
ReadFile
WriteFile
lstrcpyA
MoveFileExA
lstrcatA
GetSystemDirectoryA
LoadLibraryA
GetProcAddress
lstrcmpiA
lstrcmpA
SetCurrentDirectoryA
MoveFileA
CompareFileTime
GetShortPathNameA
SearchPathA
CloseHandle
SetFileTime
GlobalLock
GetDiskFreeSpaceA
GlobalUnlock
GlobalFree
FindFirstFileA
FindNextFileA
DeleteFileA
SetFilePointer
GetPrivateProfileStringA
FindClose
MultiByteToWideChar
MulDiv
WritePrivateProfileStringA
FreeLibrary
LoadLibraryExA
GetModuleHandleA
GetExitCodeProcess
WaitForSingleObject
GlobalAlloc
user32
GetSystemMenu
SetClassLongA
EnableMenuItem
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongA
SetCursor
LoadCursorA
CheckDlgButton
GetMessagePos
LoadBitmapA
CallWindowProcA
IsWindowVisible
CloseClipboard
SetClipboardData
EmptyClipboard
ScreenToClient
GetWindowRect
GetDlgItem
CreatePopupMenu
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
SetWindowLongA
SetForegroundWindow
ShowWindow
IsWindow
SendMessageTimeoutA
FindWindowExA
OpenClipboard
TrackPopupMenu
AppendMenuA
DrawTextA
EndPaint
DestroyWindow
wsprintfA
PostQuitMessage
gdi32
SelectObject
SetBkMode
CreateFontIndirectA
SetTextColor
DeleteObject
GetDeviceCaps
CreateBrushIndirect
SetBkColor
shell32
SHGetSpecialFolderLocation
SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
ShellExecuteA
SHFileOperationA
advapi32
RegDeleteKeyA
SetFileSecurityA
OpenProcessToken
LookupPrivilegeValueA
AdjustTokenPrivileges
RegOpenKeyExA
RegEnumValueA
RegDeleteValueA
RegCloseKey
RegCreateKeyExA
RegSetValueExA
RegQueryValueExA
RegEnumKeyA
comctl32
ImageList_AddMasked
ord17
ImageList_Destroy
ImageList_Create
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: 1KB - Virtual size: 149KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.ndata Size: - Virtual size: 80KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 262KB - Virtual size: 261KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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$PLUGINSDIR/System.dll.dll windows:4 windows x86 arch:x86
8c8a576201f68de1a3f26fc723b9f30f
Headers
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
Imports
kernel32
MultiByteToWideChar
GlobalFree
GlobalSize
lstrcpynA
lstrcpyA
GetProcAddress
VirtualFree
FreeLibrary
lstrlenA
LoadLibraryA
GetModuleHandleA
GlobalAlloc
WideCharToMultiByte
VirtualAlloc
VirtualProtect
GetLastError
user32
wsprintfA
ole32
StringFromGUID2
CLSIDFromString
Exports
Exports
Alloc
Call
Copy
Free
Get
Int64Op
Store
StrAlloc
Sections
.text Size: 7KB - Virtual size: 7KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 1024B - Virtual size: 851B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 104B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 1024B - Virtual size: 608B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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Overaction.fri
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Umbrian/Lysekronernes.Itm
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Umbrian/alang.txt
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Umbrian/anodize.tab
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Umbrian/eppes.bos
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Umbrian/evindeliges.dyk
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Umbrian/interpoleres.veb