a[.]scr[.]exe | Triage

Sharing

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General

Target

a.scr.exe
Size

352KB
MD5

de7cd552b649caa3fd4a893099c8a924
SHA1

d99f51698077961cf1d46a651dfa14ef18d19e13
SHA256

92e55159b6e18fb75e5aa6d39a9b37822619c9d31123894ade0f7c4544a045cb
SHA512

c075c0047a5a4b4a572905c9637b1c01afee26c28f12d6861e4fa64165aaf149e692b67a6f707b2e363396f05a201d7160a27aefb73323d6d871c3e8d213f287
SSDEEP

6144:xpW706rxuUnXSMGWZz5teVqf787zFg609T0IHj5euOWK8U3QvO5iduiM:KI6r3nCTWJVj8Rg6qT0cNNOWb25EuT

Score

1^/10

Malware Config

Signatures

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

a.scr.exe
.exe windows x86

b78ecf47c0a3e24a6f4af114e2d1f5de

Code Sign

47:ae:cd:e5:ac:60:84:24:4e:8d:04:32:4f:d9:6e:32:30:6d:29:88
Certificate

Issuer

OU=coinsurance Rod Softwareudviklingens\ ,O=Trefah,L=Corpus Christi,ST=Texas,C=US,1.2.840.113549.1.9.1=#0c1a537964657240566f6b73656e756e6465727669736e692e537469

Not Before

18/08/2022, 09:27

Not After

17/08/2025, 09:27

Subject

OU=coinsurance Rod Softwareudviklingens\ ,O=Trefah,L=Corpus Christi,ST=Texas,C=US,1.2.840.113549.1.9.1=#0c1a537964657240566f6b73656e756e6465727669736e692e537469

47:ae:cd:e5:ac:60:84:24:4e:8d:04:32:4f:d9:6e:32:30:6d:29:88
Certificate

Issuer

OU=coinsurance Rod Softwareudviklingens\ ,O=Trefah,L=Corpus Christi,ST=Texas,C=US,1.2.840.113549.1.9.1=#0c1a537964657240566f6b73656e756e6465727669736e692e537469

Not Before

18/08/2022, 09:27

Not After

17/08/2025, 09:27

Subject

OU=coinsurance Rod Softwareudviklingens\ ,O=Trefah,L=Corpus Christi,ST=Texas,C=US,1.2.840.113549.1.9.1=#0c1a537964657240566f6b73656e756e6465727669736e692e537469

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

1b:b6:6c:da:92:23:34:6d:d7:c8:d7:5b:7c:16:dd:30:73:c2:3c:77:0a:49:9d:c9:57:1a:d9:51:64:d9:13:26
Signer

Actual PE Digest

1b:b6:6c:da:92:23:34:6d:d7:c8:d7:5b:7c:16:dd:30:73:c2:3c:77:0a:49:9d:c9:57:1a:d9:51:64:d9:13:26

Digest Algorithm

sha256

PE Digest Matches

true

3f:4a:18:91:88:72:dd:8e:e1:a4:ad:8a:04:b0:d0:2c:d1:19:da:0f
Signer

Actual PE Digest

3f:4a:18:91:88:72:dd:8e:e1:a4:ad:8a:04:b0:d0:2c:d1:19:da:0f

Digest Algorithm

sha1

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

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

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
SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
ShellExecuteA
SHFileOperationA

advapi32

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

comctl32

ImageList_Create
ImageList_AddMasked
ImageList_Destroy
ord17

ole32

OleUninitialize
OleInitialize
CoTaskMemFree
CoCreateInstance

Sections

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

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: 72KB

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

Sharing

General

Malware Config

Signatures

Files

b78ecf47c0a3e24a6f4af114e2d1f5de

Code Sign

47:ae:cd:e5:ac:60:84:24:4e:8d:04:32:4f:d9:6e:32:30:6d:29:88Certificate

47:ae:cd:e5:ac:60:84:24:4e:8d:04:32:4f:d9:6e:32:30:6d:29:88Certificate

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

1b:b6:6c:da:92:23:34:6d:d7:c8:d7:5b:7c:16:dd:30:73:c2:3c:77:0a:49:9d:c9:57:1a:d9:51:64:d9:13:26Signer

3f:4a:18:91:88:72:dd:8e:e1:a4:ad:8a:04:b0:d0:2c:d1:19:da:0fSigner

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

Sections

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

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

.data Size: 1KB - Virtual size: 149KB

.ndata Size: - Virtual size: 72KB

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

47:ae:cd:e5:ac:60:84:24:4e:8d:04:32:4f:d9:6e:32:30:6d:29:88
Certificate

47:ae:cd:e5:ac:60:84:24:4e:8d:04:32:4f:d9:6e:32:30:6d:29:88
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

1b:b6:6c:da:92:23:34:6d:d7:c8:d7:5b:7c:16:dd:30:73:c2:3c:77:0a:49:9d:c9:57:1a:d9:51:64:d9:13:26
Signer

3f:4a:18:91:88:72:dd:8e:e1:a4:ad:8a:04:b0:d0:2c:d1:19:da:0f
Signer

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

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

.data
Size: 1KB - Virtual size: 149KB

.ndata
Size: - Virtual size: 72KB

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