Voice[.]ai-Downloader[.]exe

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General

Target
Voice.ai-Downloader.exe
Size 477KB
Sample260809-r2ccdsszat
SHA256 100dba151efe66c842fde4337857fd3db4568c1e3ee008e412927e67ed72094e
MD5 40ffaea0c96bc8fd1ac022ecf287980b
SHA1 c9ff64fecee39aa1a4f1c930d6b6ad423e1b1c14
SHA512 cc0f2ff6b650644564d7469031c96fcaf93b9dd82318eda244abb65970d2e5697ba27bb0c62e31f4f654cc031ac7f19f0692f444674fd174f9acbc201c8944dd
SSDEEP 3072:ckBGWOsTIJgIDU5A/cNo68pMABlZQ2wpFD0ra42L5GYDxJ0ytta:c1ssjH5Mp2w7g+42LUS6
TLSH
T1E4A46270FF02F12BFBC8D4F811B8AE0EC4AFEC8A77954951421A1695CF39B94B9B4548
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

installer

Malware Config

Signatures

Insecure Codesign Algorithm 1 IoCs

File was codesigned using an insecure algorithm.

resource
Voice.ai-Downloader.exe

Unsigned PE 3 IoCs

Checks for missing Authenticode signature.

resource
unpack001/$PLUGINSDIR/INetC.dll
unpack001/$PLUGINSDIR/System.dll
unpack001/$PLUGINSDIR/nsProcess.dll

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

File Explorer

Voice.ai-Downloader.exe

.exe 477KB
$PLUGINSDIR/INetC.dll

.dll 21KB
$PLUGINSDIR/System.dll

.dll 12KB
$PLUGINSDIR/nsProcess.dll

.dll 4KB

Voice.ai-Downloader.exe

IMPHASH 5f0c714c36e6cc016b3a1f4bc86559e4
SHA256 100dba151efe66c842fde4337857fd3db4568c1e3ee008e412927e67ed72094e
MD5 40ffaea0c96bc8fd1ac022ecf287980b
SHA1 c9ff64fecee39aa1a4f1c930d6b6ad423e1b1c14
SHA512 cc0f2ff6b650644564d7469031c96fcaf93b9dd82318eda244abb65970d2e5697ba27bb0c62e31f4f654cc031ac7f19f0692f444674fd174f9acbc201c8944dd
SSDEEP 3072:ckBGWOsTIJgIDU5A/cNo68pMABlZQ2wpFD0ra42L5GYDxJ0ytta:c1ssjH5Mp2w7g+42LUS6
TLSH
T1E4A46270FF02F12BFBC8D4F811B8AE0EC4AFEC8A77954951421A1695CF39B94B9B4548
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Insecure Codesign Algorithm

File was codesigned using an insecure algorithm.
NSIS installer

installer

Digest

2d:4d:cb:15:16:d0:be:d1:5a:71:db:90:53:5f:3e:29:2f:92:2a:e7

Digest Algorithm

sha1

PE Digests Matches

Trusted

Signing Certificate

SERIALNUMBER=470281,CN=Voice AI LLC,O=Voice AI LLC,L=San Juan,C=PR,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13025052

Chains

Mar 6, 2024

SERIALNUMBER=470281,CN=Voice AI LLC,O=Voice AI LLC,L=San Juan,C=PR,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13025052

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

SERIALNUMBER=470281,CN=Voice AI LLC,O=Voice AI LLC,L=San Juan,C=PR,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13025052

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Revocation Status

Not revoked

Timespan

Aug 1, 2022 - Nov 9, 2031

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

05:9b:1b:57:9e:8e:21:32:e2:39:07:bd:a7:77:75:5c

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Aug 1, 2013 - Jan 15, 2038

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Serial Number

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Mar 23, 2022 - Mar 22, 2037

Subject

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Serial Number

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Apr 29, 2021 - Apr 28, 2036

Subject

CN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=US

Serial Number

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Jul 14, 2023 - Oct 13, 2034

Subject

SERIALNUMBER=470281,CN=Voice AI LLC,O=Voice AI LLC,L=San Juan,C=PR,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13025052

Serial Number

0d:2f:2a:75:63:f6:db:df:98:8e:db:03:fe:57:59:33

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Jun 14, 2023 - Jun 13, 2024

Minor OS version

Major OS version

Entry point

13235

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

PDB paths

advapi32

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

shell32

SHGetFileInfoA SHFileOperationA SHGetPathFromIDListA ShellExecuteExA SHGetSpecialFolderLocation SHBrowseForFolderA

ole32

IIDFromString OleInitialize OleUninitialize CoCreateInstance CoTaskMemFree

comctl32

ord17 ImageList_Create ImageList_Destroy ImageList_AddMasked

user32

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

gdi32

SetBkMode SetBkColor GetDeviceCaps CreateFontIndirectA CreateBrushIndirect DeleteObject SetTextColor SelectObject

kernel32

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

$PLUGINSDIR/INetC.dll

IMPHASH 8e4c63f70f7cc6490634d743e795c93e
SHA256 2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f
MD5 2b342079303895c50af8040a91f30f71
SHA1 b11335e1cb8356d9c337cb89fe81d669a69de17e
SHA512 550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47
SSDEEP 384:KOoVVefeWsI7rsIquPLNN546o0Ac9khYLMkIX0+Gzyekv:4VVaeE7wIqyJN5i
TLSH
T158A22B5353A01FFEF3E7153878B27B3745A99A6450938A9F07B32D8D2566282BD32342
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.
NSIS installer

installer

Minor OS version

Major OS version

Entry point

16201

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NO_SEH

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_DLL

PDB paths

kernel32

TerminateThread CreateThread LocalAlloc lstrcpyA WaitForSingleObject MulDiv ReadFile GetModuleHandleA SleepEx lstrcatA GetTickCount CreateFileA GetFileSize DeleteFileA lstrcmpA lstrcmpiA SetFilePointer WriteFile GetProcAddress CloseHandle lstrlenA LoadLibraryA lstrcpynA LocalFree GlobalAlloc GlobalFree GetLastError WideCharToMultiByte

user32

LoadIconA SystemParametersInfoA GetWindowLongA GetParent MessageBoxA DispatchMessageA SetWindowLongA KillTimer PostMessageA IsWindow GetWindowTextA ShowWindow SendDlgItemMessageA TranslateMessage IsDialogMessageA CreateDialogParamA SetDlgItemTextA GetWindowRect SetWindowPos SetTimer SendMessageA RedrawWindow GetClientRect EnableWindow FindWindowExA UpdateWindow GetMessageA GetDlgItem wsprintfA DestroyWindow SetWindowTextA IsWindowVisible

comctl32

ord17

wininet

InternetSetOptionA InternetQueryOptionA FtpCreateDirectoryA InternetConnectA InternetWriteFile FtpOpenFileA InternetSetFilePointer HttpEndRequestA HttpAddRequestHeadersA HttpSendRequestA InternetGetLastResponseInfoA InternetOpenA InternetCrackUrlA HttpOpenRequestA HttpSendRequestExA InternetCloseHandle InternetReadFile HttpQueryInfoA InternetErrorDlg

$PLUGINSDIR/System.dll

IMPHASH 8c8a576201f68de1a3f26fc723b9f30f
SHA256 c7a20bcaa0197aedddc8e4797bbb33fdf70d980f5e83c203d148121c2106d917
MD5 792b6f86e296d3904285b2bf67ccd7e0
SHA1 966b16f84697552747e0ddd19a4ba8ab5083af31
SHA512 97edc3410b88ca31abc0af0324258d2b59127047810947d0fb5e7e12957db34d206ffd70a0456add3a26b0546643ff0234124b08423c2c9ffe9bdec6eb210f2c
SSDEEP 192:rFiQJ771Jt17C8F1A5xjGNNvgFOiLb7lrT/L93:X71Jt48F2eNvgFF/L
TLSH
T140425A0583618EF3F5962D3C00667E2F2B79BE3416F140639FE34481A99A1CFA975392
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.
NSIS installer

installer

Minor OS version

Major OS version

Entry point

10673

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

PDB paths

$PLUGINSDIR/nsProcess.dll

IMPHASH c9fc7f6df8fedf8f8f1f9f820c072664
SHA256 95fe9d92512ff2318cc2520311ef9145b2cee01209ab0e1b6e45c7ce1d4d0e89
MD5 05450face243b3a7472407b999b03a72
SHA1 ffd88af2e338ae606c444390f7eaaf5f4aef2cd9
SHA512 f4cbe30166aff20a226a7150d93a876873ba699d80d7e9f46f32a9b4753fa7966c3113a3124340b39ca67a13205463a413e740e541e742903e3f89af5a53ad3b
TLSH
T12881947683E424F1C08F0D33B02A04DB6B76C9321326850D9B536F82A9A5AFBE03C311
MD5 SHA1 SHA512 TLSH

windows:4 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.
NSIS installer

installer

Minor OS version

Major OS version

Entry point

4255

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NO_SEH

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_DLL

PDB paths

Voice.ai-Downloader.exe

advapi32

shell32

ole32

comctl32

user32

gdi32

kernel32

generic

$PLUGINSDIR/INetC.dll

kernel32

user32

comctl32

wininet

generic

$PLUGINSDIR/System.dll

kernel32

user32

ole32

generic

$PLUGINSDIR/nsProcess.dll

kernel32

generic